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Increasing heavy metal pollution in the environment and the fact that pine needles are good bio-monitors for air pollutants was the reason to investigate their accumulation in pine needles in Vienna (Austria). Pinus nigra is widespread over the city, thus allowing the study of different parameters influencing metal accumulation. The sampling sites were chosen based on traffic volume (low, medium, high). Fresh shoots were collected alongside one-year-old needles once per week from May to August 2015. The needle samples were washed and dried prior to acidic microwave-assisted digestion followed by quantitative determination using spectrometric methods. The investigation was focused on the following elements: Ag, Al, As, B, Ba, Be, Ca, Cd, Co, Cr, Cu, Fe, K, Li, Mg, Mn, Mo, Na, Ni, Pb, Se, Sr, U, V, and Zn. The one-year-old needles mainly contained higher contents of elements than fresh shoots; in many cases, the values differed statistically significantly. By correlating needle elemental contents with the sampling site, statistically significant differences were registered for the majority of the investigated elements. These differences originate from the local traffic situation, soil elemental levels, translocation processes, and not traffic-related sources. No general trend of metal accumulation from spring to summer was registered.
Michaela Zeiner; Iva Juranović Cindrić. Accumulation of Major, Minor and Trace Elements in Pine Needles (Pinus nigra) in Vienna (Austria). Molecules 2021, 26, 3318 .
AMA StyleMichaela Zeiner, Iva Juranović Cindrić. Accumulation of Major, Minor and Trace Elements in Pine Needles (Pinus nigra) in Vienna (Austria). Molecules. 2021; 26 (11):3318.
Chicago/Turabian StyleMichaela Zeiner; Iva Juranović Cindrić. 2021. "Accumulation of Major, Minor and Trace Elements in Pine Needles (Pinus nigra) in Vienna (Austria)." Molecules 26, no. 11: 3318.
Nowadays the majority of young people are exposed to a wide and constantly rising range of stimuli by different media. This sensory overload leads to higher stress levels and therefore decreases the ability to concentrate and focus. Laboratory work, however, requires high concentration in order to achieve reliable results under safe conditions. The tendency toward students showing up in the laboratory without proper preparation is rising, resulting in higher risks of errors when performing experiments. Thus, simple and self-explaining instructions are needed to ensure the requested learning outcome, especially when facing laboratories with high course enrollments. A photocomic combines the ease of presentation with clear pictures showing the relevant steps of experimental work.
Michaela Zeiner; Petra Viehauser; Christina Steiner-Friedmann. Teaching Laboratories at a Slower Pace: Introduction of Photocomics as Easy-to-Use Laboratory Instructions. Journal of Chemical Education 2019, 96, 2518 -2523.
AMA StyleMichaela Zeiner, Petra Viehauser, Christina Steiner-Friedmann. Teaching Laboratories at a Slower Pace: Introduction of Photocomics as Easy-to-Use Laboratory Instructions. Journal of Chemical Education. 2019; 96 (11):2518-2523.
Chicago/Turabian StyleMichaela Zeiner; Petra Viehauser; Christina Steiner-Friedmann. 2019. "Teaching Laboratories at a Slower Pace: Introduction of Photocomics as Easy-to-Use Laboratory Instructions." Journal of Chemical Education 96, no. 11: 2518-2523.
Soil is one of the vehicles by which metals enter plants and groundwater. Compared to organic pollutants, metals do not biodegrade and are usually not mobile. In order to estimate the potential impact on groundwater, the amount of extractable metals from soil are thus of concern. Soil matrices represent quite a complex matrix; thus, the appropriate choice of sample preparation and analytical method is of great importance and challenging to ensure reliable and fast data while keeping labor and time need as low as possible. Soil extracts using acetic acid were analyzed, on the one hand, using classical analytical methods such as titrimetry (complexometry) and spectrophotometry, and on the other hand, by instrumental methods, including inductively coupled plasma optical emission spectrometry (ICP-OES), inductively coupled plasma mass spectrometry (ICP-MS) and graphite furnace atomic absorption spectrometry (GF-AAS). The classical methods are characterized by higher limits of detection (LODs), nevertheless their application as screening method on-site is promising. Applying specific reagents, precise measurements can be obtained by photometry with LODs about 0.1 mg/L. Titrimetric methods can be used for specific single element determination and for determining the sum of certain metals at contaminated sites due to LODs around 60 mg/L.
Michaela Zeiner; Raimund Pirkl; Iva Juranović Cindrić. Field-Tests versus Laboratory Methods for Determining Metal Pollutants in Soil Extracts. Soil and Sediment Contamination: An International Journal 2019, 29, 53 -68.
AMA StyleMichaela Zeiner, Raimund Pirkl, Iva Juranović Cindrić. Field-Tests versus Laboratory Methods for Determining Metal Pollutants in Soil Extracts. Soil and Sediment Contamination: An International Journal. 2019; 29 (1):53-68.
Chicago/Turabian StyleMichaela Zeiner; Raimund Pirkl; Iva Juranović Cindrić. 2019. "Field-Tests versus Laboratory Methods for Determining Metal Pollutants in Soil Extracts." Soil and Sediment Contamination: An International Journal 29, no. 1: 53-68.
Pine needles are widely used as bio-indicators due to their worldwide distribution and the ease of sample collection. In contrast to deciduous trees, conifers offer the possibility of monitoring long-term exposure through older needles. Pinus halepensis Miller is a pine species native to the Mediterranean region, which has been used for restoration activities in arid and semiarid areas leading to vast spatial expansion. Needles from pine trees collected in the southeastern to northwestern extension of Croatia’s coastal area at twelve sampling sites were analysed for twenty-one metals and metalloids. Statistical evaluation of the obtained data revealed significant differences for Al, As, B, Ba, Ca, Cr, Fe, K, Mg, Mn, Na, Se, and Sr between the different regions. Needles from trees growing on islands did not show elevated levels of Mg and/or Na as a result of the sea spray influence. The differences in metal accumulation are supposed to be linked to the environmental conditions at the respective sampling site, since the species was the same everywhere. By comparing the elemental contents of the soil those of with needles, it can be clearly seen, that the root as well as the foliar uptake contribute to the final amount.
Michaela Zeiner; Ana Kuhar; Iva Juranović Cindrić. Geographic Differences in Element Accumulation in Needles of Aleppo Pines (Pinus halepensis Mill.) Grown in Mediterranean Region. Molecules 2019, 24, 1877 .
AMA StyleMichaela Zeiner, Ana Kuhar, Iva Juranović Cindrić. Geographic Differences in Element Accumulation in Needles of Aleppo Pines (Pinus halepensis Mill.) Grown in Mediterranean Region. Molecules. 2019; 24 (10):1877.
Chicago/Turabian StyleMichaela Zeiner; Ana Kuhar; Iva Juranović Cindrić. 2019. "Geographic Differences in Element Accumulation in Needles of Aleppo Pines (Pinus halepensis Mill.) Grown in Mediterranean Region." Molecules 24, no. 10: 1877.
Walnuts (Juglans nigra) are considered to be a functional food. In the present study, twenty one macro-, micro-, and trace elements (Al, As, B, Ba, Ca, Cd, Co, Cr, Cu, Fe, K, Li, Mg, Mn, Mo, Na, Ni, Pb, Se, Sr, and Zn) were selected to be determined in walnuts and walnut oils. The beneficial content of essential elements could be shown by the obtained results, the macro-elements Ca, K, Mg, and Na being present in nuts with 1062 mg/kg, 2771 mg/kg, 1426 mg/kg, and 42.3 mg/kg, respectively. Regarding micro- and trace elements, the following order (decreasing content) was found: Mn > Fe > Zn > B, Mo > Cu > Ni > Co > Al > Sr > Ba > Li > Pb > Se > Cr > As > Cd. Furthermore, the potentially toxic trace elements (As, Cd, Pb) determined were below the maximum allowed values in most of the investigated walnut samples. A comparison of oils and nuts revealed that the former contain lower concentrations of all elements analyzed except for Fe and Zn. This suggested the origin from contamination during oil processing. Fe influences the oil oxidation rate, thus its entry during production should be avoided.
Iva Juranović Cindrić; Michaela Zeiner; Dora Hlebec. Mineral Composition of Elements in Walnuts and Walnut Oils. International Journal of Environmental Research and Public Health 2018, 15, 2674 .
AMA StyleIva Juranović Cindrić, Michaela Zeiner, Dora Hlebec. Mineral Composition of Elements in Walnuts and Walnut Oils. International Journal of Environmental Research and Public Health. 2018; 15 (12):2674.
Chicago/Turabian StyleIva Juranović Cindrić; Michaela Zeiner; Dora Hlebec. 2018. "Mineral Composition of Elements in Walnuts and Walnut Oils." International Journal of Environmental Research and Public Health 15, no. 12: 2674.
Air pollution can be studied by appropriate bio-indicators, such as pine needles due to their waxy surface. Metal uptake and accumulation is determined on growing area, but also on the respective species. Scope of the study was to analyse needles of Pinus densiflora Siebold et Zucc., Pinus nigra Arnold, Pinus sylvestris L., and Pinus thunbergiana Franco for metals and metalloids, namely aluminium, arsenic, boron, barium, calcium, cadmium, cobalt, copper, chromium, iron, potassium, lithium, magnesium, manganese, molybdenum, sodium, nickel, lead, selenium, strontium, and zinc. Quantitation of the analytes was performed using inductively coupled plasma atomic emission spectrometry and inductively coupled plasma sector field mass spectrometry after acidic microwave-assisted digestion. The obtained data were checked for statistically significant differences. The metal levels differ between the various species, but no general tendency was found for all metals. Since the environmental conditions were the same for all sampled trees, the differences in metal accumulation are supposed to be linked to species of pine tree. The diverse accumulation behaviour can be used for treating polluted soil.
I. Juranović Cindrić; M. Zeiner; A. Starčević; G. Stingeder. Metals in pine needles: characterisation of bio-indicators depending on species. International Journal of Environmental Science and Technology 2018, 16, 4339 -4346.
AMA StyleI. Juranović Cindrić, M. Zeiner, A. Starčević, G. Stingeder. Metals in pine needles: characterisation of bio-indicators depending on species. International Journal of Environmental Science and Technology. 2018; 16 (8):4339-4346.
Chicago/Turabian StyleI. Juranović Cindrić; M. Zeiner; A. Starčević; G. Stingeder. 2018. "Metals in pine needles: characterisation of bio-indicators depending on species." International Journal of Environmental Science and Technology 16, no. 8: 4339-4346.
Fruits and vegetables are considered a beneficial contribution to the human diet. Especially, berries contain a great deal of bioactive compounds, such as anthocyanins, organic acids, tannins, phenols, and antioxidants. Apart from organic substances, inorganic nutrients are also present in fruits. Some metals and metalloids are essential for humans, whilst others may exhibit harmful effects. Wild grown berries, collected in so-called unpolluted areas, are considered to be free of any potentially toxic ingredients. However, due to transmission processes pollutants can also reach remote areas and, furthermore, metal uptake from the soil via roots has to be taken into account. Thus, the presented study focused on the determination of Al, Cd, Cr, Ni, and Pb in lingonberries, blueberries, and rose hips collected in a non-polluted area in Croatia. Neither Cd nor Cr could be found in any sample. Ni levels were mainly up to 25 mg/kg, in a comparable range to the literature data. No health threat is to be expected by eating these fruits and berries regarding Cd, Cr, and Ni. Rose hips, however, contain Pb beyond the stipulated limit in fruits, and also Al is present at a high level (8 mg/g).
Michaela Zeiner; Iva Juranović Cindrić. Harmful Elements (Al, Cd, Cr, Ni, and Pb) in Wild Berries and Fruits Collected in Croatia. Toxics 2018, 6, 31 .
AMA StyleMichaela Zeiner, Iva Juranović Cindrić. Harmful Elements (Al, Cd, Cr, Ni, and Pb) in Wild Berries and Fruits Collected in Croatia. Toxics. 2018; 6 (2):31.
Chicago/Turabian StyleMichaela Zeiner; Iva Juranović Cindrić. 2018. "Harmful Elements (Al, Cd, Cr, Ni, and Pb) in Wild Berries and Fruits Collected in Croatia." Toxics 6, no. 2: 31.
Pine needles have been considered to be useful bio-indicators for air pollution. This phenomenon can be used for environmental studies for monitoring purposes. Additionally, this fact offers the possibility to study uptake and accumulation behaviour not only in different species, but also in hybrids obtained from common pine trees to inheritage processes. Therefore, needles of Pinus nigra Arnold and Pinus thunbergiana Franco as well as of their F1 hybrids were investigated for essential and non-essential metals, such as Al, B, Ba, Ca, Cd, Co, Cu, Cr, Fe, K, Mg, Mn, Mo, Na, Ni, Pb, Sr, and Zn. The samples underwent acidic microwave-assisted digestion prior to analysis inductively coupled plasma atomic emission spectrometry (ICP-AES). Furthermore flavonoids were quantitatively determined to prove hybrid character. Regarding all determined analytes, increase and decrease of uptake in the needles of the hybrids were evaluated in comparison to the needles of the parent pine species to see which parent is the dominant one. In the hybrids higher amounts of Al, Cd, Mo, Ni, Mg, Mn, and Zn were found. Different behaviour was registered for flavonoids than for metals, due to different metabolic pathways.
Iva Juranović-Cindrić; Michaela Zeiner; Ana Starčević; Zlatko Liber; Gordana Rusak; Marilena Idžojtić; Gerhard Stingeder. Influence of F1 hybridization on the metal uptake behaviour of pine trees (Pinus nigra x Pinus thunbergiana; Pinus thunbergiana x Pinus nigra). Journal of Trace Elements in Medicine and Biology 2018, 48, 190 -195.
AMA StyleIva Juranović-Cindrić, Michaela Zeiner, Ana Starčević, Zlatko Liber, Gordana Rusak, Marilena Idžojtić, Gerhard Stingeder. Influence of F1 hybridization on the metal uptake behaviour of pine trees (Pinus nigra x Pinus thunbergiana; Pinus thunbergiana x Pinus nigra). Journal of Trace Elements in Medicine and Biology. 2018; 48 ():190-195.
Chicago/Turabian StyleIva Juranović-Cindrić; Michaela Zeiner; Ana Starčević; Zlatko Liber; Gordana Rusak; Marilena Idžojtić; Gerhard Stingeder. 2018. "Influence of F1 hybridization on the metal uptake behaviour of pine trees (Pinus nigra x Pinus thunbergiana; Pinus thunbergiana x Pinus nigra)." Journal of Trace Elements in Medicine and Biology 48, no. : 190-195.
Michaela Zeiner; Iva Juranović Cindrić; Wolfgang Kandler; Gerhard Stingeder. Trace determination of skin-irritating metals in tea tree oil by GFAAS. Microchemical Journal 2018, 136, 101 -105.
AMA StyleMichaela Zeiner, Iva Juranović Cindrić, Wolfgang Kandler, Gerhard Stingeder. Trace determination of skin-irritating metals in tea tree oil by GFAAS. Microchemical Journal. 2018; 136 ():101-105.
Chicago/Turabian StyleMichaela Zeiner; Iva Juranović Cindrić; Wolfgang Kandler; Gerhard Stingeder. 2018. "Trace determination of skin-irritating metals in tea tree oil by GFAAS." Microchemical Journal 136, no. : 101-105.
Michaela Zeiner; Iva Juranovic Cindric; Darija Mihajlov Konanov; Gerhard Stingeder. Differences in Bioaccumulation of Essential and Toxic Elements by White and Red Hawthorn. Current Analytical Chemistry 2017, 13, 1 .
AMA StyleMichaela Zeiner, Iva Juranovic Cindric, Darija Mihajlov Konanov, Gerhard Stingeder. Differences in Bioaccumulation of Essential and Toxic Elements by White and Red Hawthorn. Current Analytical Chemistry. 2017; 13 (4):1.
Chicago/Turabian StyleMichaela Zeiner; Iva Juranovic Cindric; Darija Mihajlov Konanov; Gerhard Stingeder. 2017. "Differences in Bioaccumulation of Essential and Toxic Elements by White and Red Hawthorn." Current Analytical Chemistry 13, no. 4: 1.
Black chokeberries (Aronia melanocarpa) are considered to be functional food containing high amounts of anthocyanins, phenols, antioxidants, vitamins and minerals. Whereas organic compounds are well studied, there is little research on the mineral composition of the chokeberries. Thus, the presented study is focused on the determination of Al, As, Ba, Ca, Cd, Co, Cr, Cu, Fe, K, Li, Mg, Mn, Mo, Na, Ni, Pb, Se, Sr and Zn in black chokeberry fruits and infusions to study the metals’ extractability. The nutrients Ca, K and Mg are present in the fruits (dried matter) at g/kg level, whereas the other elements are present from µg/kg up to mg/kg level. The extraction yields of the metals from the infusion range from 4 (Al, Mn) up to 44% (Na). The toxic elements present do not pose any health risk when berries or infusions are consumed. Concluding, Aronia berries, as well as infusions derived from them, are a good dietary source of essential metals in addition to the organic compounds also contained.
Iva Juranović Cindrić; Michaela Zeiner; Darija Mihajlov-Konanov; Gerhard Stingeder. Inorganic Macro- and Micronutrients in “Superberries” Black Chokeberries (Aronia melanocarpa) and Related Teas. International Journal of Environmental Research and Public Health 2017, 14, 539 .
AMA StyleIva Juranović Cindrić, Michaela Zeiner, Darija Mihajlov-Konanov, Gerhard Stingeder. Inorganic Macro- and Micronutrients in “Superberries” Black Chokeberries (Aronia melanocarpa) and Related Teas. International Journal of Environmental Research and Public Health. 2017; 14 (5):539.
Chicago/Turabian StyleIva Juranović Cindrić; Michaela Zeiner; Darija Mihajlov-Konanov; Gerhard Stingeder. 2017. "Inorganic Macro- and Micronutrients in “Superberries” Black Chokeberries (Aronia melanocarpa) and Related Teas." International Journal of Environmental Research and Public Health 14, no. 5: 539.
Application of Mixed Microbial Culture Biofilms for Manganese (II), Cobalt (II), and Chromium (VI) Biosorption by Horizontal Rotating Tubular Bioreactor | InTechOpen, Published on: 2017-03-29. Authors: Tonči Rezić, Iva Rezić, Michaela Zeiner, et
Iva Rezic; Michaela Zeiner; Božidar Šantek. Application of Mixed Microbial Culture Biofilms for Manganese (II), Cobalt (II), and Chromium (VI) Biosorption by Horizontal Rotating Tubular Bioreactor. Biological Wastewater Treatment and Resource Recovery 2017, 1 .
AMA StyleIva Rezic, Michaela Zeiner, Božidar Šantek. Application of Mixed Microbial Culture Biofilms for Manganese (II), Cobalt (II), and Chromium (VI) Biosorption by Horizontal Rotating Tubular Bioreactor. Biological Wastewater Treatment and Resource Recovery. 2017; ():1.
Chicago/Turabian StyleIva Rezic; Michaela Zeiner; Božidar Šantek. 2017. "Application of Mixed Microbial Culture Biofilms for Manganese (II), Cobalt (II), and Chromium (VI) Biosorption by Horizontal Rotating Tubular Bioreactor." Biological Wastewater Treatment and Resource Recovery , no. : 1.
In the present work, the accumulation of selected toxic and essential ultra-trace elements in fruits of service tree (Sorbus domestica L.) were determined depending on harvest time. Samples were collected from the same sampling area in two different years and within one year in September and October (maturity state). Harvesting the fruits in the same area excludes the influence of metals taken up via roots, thus the impact of airborne contamination by heavy metal translocation can be studied. All samples were dried and digested using an acidic microwave assisted digestion system prior to quantification by inductively coupled plasma—sector field mass spectrometry (ICP–SFMS). The elements chosen were Arsenic and Cadmium as well as Lithium, Molybdenum, and Selenium. The Arsenic content rose with maturity in mesocarp. Cadmium found in the mesocarp was unaffected by ripeness. For Selenium and Molybdenum, no statistically significant effect of ripeness could be found on their content in mesocarp. Lithium could not be detected in the majority of fruit samples. Differences between the metal concentrations based on the year of harvest were found for Arsenic, Molybdenum, and Selenium, depending on precipitation. The drier the season, the more Arsenic was accumulated. For Molybdenum and Selenium, the opposite effect was observed.
Michaela Zeiner; Iva Juranović Cindrić; Boris Majić; Gerhard Stingeder. Study of the Accumulation of Toxic and Essential Ultra-Trace Elements in Fruits of Sorbus domestica L. International Journal of Environmental Research and Public Health 2017, 14, 341 .
AMA StyleMichaela Zeiner, Iva Juranović Cindrić, Boris Majić, Gerhard Stingeder. Study of the Accumulation of Toxic and Essential Ultra-Trace Elements in Fruits of Sorbus domestica L. International Journal of Environmental Research and Public Health. 2017; 14 (4):341.
Chicago/Turabian StyleMichaela Zeiner; Iva Juranović Cindrić; Boris Majić; Gerhard Stingeder. 2017. "Study of the Accumulation of Toxic and Essential Ultra-Trace Elements in Fruits of Sorbus domestica L." International Journal of Environmental Research and Public Health 14, no. 4: 341.
Since plant materials may contain high amounts of harmful metals, it is important to ensure the safe use of herbs by determining the current metal levels in herbs and their parts used for medical applications.
Michaela Zeiner; Iva Juranović Cindrić. Review – trace determination of potentially toxic elements in (medicinal) plant materials. Analytical Methods 2017, 9, 1550 -1574.
AMA StyleMichaela Zeiner, Iva Juranović Cindrić. Review – trace determination of potentially toxic elements in (medicinal) plant materials. Analytical Methods. 2017; 9 (10):1550-1574.
Chicago/Turabian StyleMichaela Zeiner; Iva Juranović Cindrić. 2017. "Review – trace determination of potentially toxic elements in (medicinal) plant materials." Analytical Methods 9, no. 10: 1550-1574.
Alchemilla, commonly called "lady's mantle", is a genus of herbaceous perennial plants belonging to the family Rosaceae. The species Alchemilla velebitica is found only in Southern Europe, like in the Croatian National Park Northern Velebit. Its benefits, such as a astringent and emmenagogue activity as well as wound healing are correlated to the organic compounds found in the plant, but also certain trace elements are known to reduce skin lesions, such as zinc, selenium, copper, manganese, silicon and lithium. Thus the objective of the present study was the elemental characterization of leaves, blossoms and roots of A. velebitica. After acidic microwave assisted digestion the concentrations of selected essential and trace elements were determined by inductively coupled plasma--atomic emission spectrometry and inductively coupled plasma--mass spectrometry. Other minor elements, such as Al, B, Cu, Fe, Mn, Sr and Zn are also found in leaves, blossoms and roots with contents in μg/kg range. The preparation of decoctions and the extraction yields of the elements of interest are calculated.
Iva Juranović Cindrić; Michaela Zeiner; Martina Požgaj; Tea Šilić; Gerhard Stingeder. Elemental characterisation of the medical plant Alchemilla velebitica. Journal of Trace Elements in Medicine and Biology 2015, 31, 274 -278.
AMA StyleIva Juranović Cindrić, Michaela Zeiner, Martina Požgaj, Tea Šilić, Gerhard Stingeder. Elemental characterisation of the medical plant Alchemilla velebitica. Journal of Trace Elements in Medicine and Biology. 2015; 31 ():274-278.
Chicago/Turabian StyleIva Juranović Cindrić; Michaela Zeiner; Martina Požgaj; Tea Šilić; Gerhard Stingeder. 2015. "Elemental characterisation of the medical plant Alchemilla velebitica." Journal of Trace Elements in Medicine and Biology 31, no. : 274-278.
The use of medical herbs for the treatment of many human diseases is increasing nowadays due to their mild features and low side effects. Not only for their healing properties, but also for their nutritive value supplementation of diet with various herbs is recommended. Thus also their analysis is of rising importance. While total elemental compositions are published for many common herbs, the origin of toxic as well as beneficial elements is not yet well investigated. Thus different indigenous medicinal plants, namely Croatian spruce (Picea abies), savory (Satureja montana L.), mountain yarrow (Achillea clavennae), showy calamint (Calamintha grandiflora), micromeria (Micromeria croatica), yellow gentian (Gentiana lutea) and fir (Abies alba) together with soil samples were collected in the National Park Northern Velebit. The macro- and trace elements content, after microwave digestion, was determined by inductively coupled plasma-atomic emission spectroscopy (ICP-AES) and inductively coupled plasma mass spectroscopy (ICP-MS). The study focuses on the one hand on essential elements and on the other hand on non-essential elements which are considered as toxic for humans, covering in total Al, As, B, Ba, Ca, Cd, Co, Cr, Cu, Fe, K, Mg, Mn, Na, Ni, Pb, Sr and Zn.
Michaela Zeiner; Iva Juranović Cindrić; Martina Požgaj; Raimund Pirkl; Tea Šilić; Gerhard Stingeder. Influence of soil composition on the major, minor and trace metal content of Velebit biomedical plants. Journal of Pharmaceutical and Biomedical Analysis 2015, 106, 153 -158.
AMA StyleMichaela Zeiner, Iva Juranović Cindrić, Martina Požgaj, Raimund Pirkl, Tea Šilić, Gerhard Stingeder. Influence of soil composition on the major, minor and trace metal content of Velebit biomedical plants. Journal of Pharmaceutical and Biomedical Analysis. 2015; 106 ():153-158.
Chicago/Turabian StyleMichaela Zeiner; Iva Juranović Cindrić; Martina Požgaj; Raimund Pirkl; Tea Šilić; Gerhard Stingeder. 2015. "Influence of soil composition on the major, minor and trace metal content of Velebit biomedical plants." Journal of Pharmaceutical and Biomedical Analysis 106, no. : 153-158.
Hawthorn is one of the most commonly used European and North American phytopharmaceuticals. Because there is no information on metals in seeds, and only rare data for leaves and flowers, the aim of the present study was elemental analysis of the white hawthorn (Crataegus monogyna) by inductively coupled plasma emission spectrometry (ICP-AES) or inductively coupled plasma mass spectrometry (ICP-MS) after digestion in a microwave-assisted system. The limits of detection are below 2 μg/g for ICP-AES and 0.5 μg/g for ICP-MS. Hawthorn leaves and flowers contain essential elements at concentrations (mean values, RSD 2-8%) in mg/g of Ca, 1-4; K, 4-5; Mg, 1-2; and Na, <0.2); and at μg/g levels of Ba, 1-10; Co, <0.16; Cr, <1.4; Cu, 0.6-7; Fe, 1-37; Li, <0.5; Mn, 1-13; Mo, <0.17; Ni, <0.6; Sr, 0.2-2; and Zn, 1-31. Toxic elements were found in low quantities: As (<0.04), Cd (0.04-0.1), and Pb (0.1-2). Up to 10% of the metals is extracted into the infusions. The analyzed plant parts and infusions contain essential elements justifying its use as a medicinal plant, whereas the low quantities of harmful elements will not pose any risk to humans when consumed.
Iva Juranović Cindrić; Michaela Zeiner; Darija Mihajlov Konanov; Gerhard Stingeder. Metal Characterization of White Hawthorn Organs and Infusions. Journal of Agricultural and Food Chemistry 2015, 63, 1798 -1802.
AMA StyleIva Juranović Cindrić, Michaela Zeiner, Darija Mihajlov Konanov, Gerhard Stingeder. Metal Characterization of White Hawthorn Organs and Infusions. Journal of Agricultural and Food Chemistry. 2015; 63 (6):1798-1802.
Chicago/Turabian StyleIva Juranović Cindrić; Michaela Zeiner; Darija Mihajlov Konanov; Gerhard Stingeder. 2015. "Metal Characterization of White Hawthorn Organs and Infusions." Journal of Agricultural and Food Chemistry 63, no. 6: 1798-1802.
Michaela Zeiner; Iva Juranović Cindrić; Marina Ivanovic; Gordana Medunić; Štefica Kampić; Nenad Tomašić; Gerhard Stingeder. Availability of Selected (Pollutant) Elements and their Influence on Soil Composition in Urban Area. Croatica Chemica Acta 2015, 88, 23 -33.
AMA StyleMichaela Zeiner, Iva Juranović Cindrić, Marina Ivanovic, Gordana Medunić, Štefica Kampić, Nenad Tomašić, Gerhard Stingeder. Availability of Selected (Pollutant) Elements and their Influence on Soil Composition in Urban Area. Croatica Chemica Acta. 2015; 88 (1):23-33.
Chicago/Turabian StyleMichaela Zeiner; Iva Juranović Cindrić; Marina Ivanovic; Gordana Medunić; Štefica Kampić; Nenad Tomašić; Gerhard Stingeder. 2015. "Availability of Selected (Pollutant) Elements and their Influence on Soil Composition in Urban Area." Croatica Chemica Acta 88, no. 1: 23-33.
Dx.doi.org/10.1590/0104-6632.20140313s00002905 *To whom correspondence should be addresse
T. Rezić; I. Rezić; Michaela Zeiner; Stephan Hann; G. Stingeder; B. Šantek. Biosorption of Mn (II), Co (II) and Cr (VI) in a horizontal rotating tubular bioreactor: experiments and evaluation of the integral bioprocess model. Brazilian Journal of Chemical Engineering 2014, 31, 799 -814.
AMA StyleT. Rezić, I. Rezić, Michaela Zeiner, Stephan Hann, G. Stingeder, B. Šantek. Biosorption of Mn (II), Co (II) and Cr (VI) in a horizontal rotating tubular bioreactor: experiments and evaluation of the integral bioprocess model. Brazilian Journal of Chemical Engineering. 2014; 31 (3):799-814.
Chicago/Turabian StyleT. Rezić; I. Rezić; Michaela Zeiner; Stephan Hann; G. Stingeder; B. Šantek. 2014. "Biosorption of Mn (II), Co (II) and Cr (VI) in a horizontal rotating tubular bioreactor: experiments and evaluation of the integral bioprocess model." Brazilian Journal of Chemical Engineering 31, no. 3: 799-814.
Michaela Zeiner; I. Juranović Cindrić; D. Mihajlov Konanov; Gerhard Stingeder. Determination of selected toxic elements in leaves of White Hawthorn grown in a remote area. E3S Web of Conferences 2013, 1, 34003 .
AMA StyleMichaela Zeiner, I. Juranović Cindrić, D. Mihajlov Konanov, Gerhard Stingeder. Determination of selected toxic elements in leaves of White Hawthorn grown in a remote area. E3S Web of Conferences. 2013; 1 ():34003.
Chicago/Turabian StyleMichaela Zeiner; I. Juranović Cindrić; D. Mihajlov Konanov; Gerhard Stingeder. 2013. "Determination of selected toxic elements in leaves of White Hawthorn grown in a remote area." E3S Web of Conferences 1, no. : 34003.