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Miguel Ángel Álvarez-Vázquez
GEAAT Group, Department of History, Art and Geography, Area of Physical Geography, University of Vigo, Spain

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Journal article
Published: 01 March 2021 in Anthropocene
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Industrial revolution induced contamination of lowland rivers and floodplain soils with heavy metals worldwide. This pollution was particularly significant in former coal mining regions where hard coal was utilised in various industrial facilities like coke, iron and steel works. The upper Odra River draining Ostrava Coal District in Czech and Upper Silesia mining region in Poland is an example of such a European river with strong historical pollution followed by modern one originating from heavy industry in times of communistic industrialisation in both countries. In the presented studies we sought 19th and 20th century transboundary contamination of the upper Odra River waters recorded in floodplain soil by the most common potentially toxic elements, i.e. lead and zinc as well as by the presence of magnetic particles (spherules). We expected to reveal the general pattern of the Odra River floodplain soil contamination with risk elements which allow us to differentiate sediments of the industrial and pre-industrial era. We used robust regression and robust principal component analysis, using a log-ratio methodology of compositional data analysis, which is a fast and effective tool in assessing contamination levels. Significant increases in risk element concentrations were found downstream from the Ostrava–Bohumín agglomeration, and in some places they exceed the safety limits for agricultural soils in Poland. A comparison of sediments within and outside of the inter-embankment zone showed no systematic difference in their contamination levels suggesting that the sediments were probably contaminated before dike construction mainly since the half of 19th century.

ACS Style

Martin Faměra; Tomáš Matys Grygar; Dariusz Ciszewski; Agnieszka Czajka; Miguel Ángel Álvarez-Vázquez; Karel Hron; Kamila Fačevicová; Věra Hýlová; Štěpánka Tůmová; Ivo Světlík; Kristýna Zimová; Kateřina Dvořáková; Bartlomiej Szypuła; Michal Hošek; Jiří Henych. Anthropogenic records in a fluvial depositional system: The Odra River along The Czech-Polish border. Anthropocene 2021, 34, 100286 .

AMA Style

Martin Faměra, Tomáš Matys Grygar, Dariusz Ciszewski, Agnieszka Czajka, Miguel Ángel Álvarez-Vázquez, Karel Hron, Kamila Fačevicová, Věra Hýlová, Štěpánka Tůmová, Ivo Světlík, Kristýna Zimová, Kateřina Dvořáková, Bartlomiej Szypuła, Michal Hošek, Jiří Henych. Anthropogenic records in a fluvial depositional system: The Odra River along The Czech-Polish border. Anthropocene. 2021; 34 ():100286.

Chicago/Turabian Style

Martin Faměra; Tomáš Matys Grygar; Dariusz Ciszewski; Agnieszka Czajka; Miguel Ángel Álvarez-Vázquez; Karel Hron; Kamila Fačevicová; Věra Hýlová; Štěpánka Tůmová; Ivo Světlík; Kristýna Zimová; Kateřina Dvořáková; Bartlomiej Szypuła; Michal Hošek; Jiří Henych. 2021. "Anthropogenic records in a fluvial depositional system: The Odra River along The Czech-Polish border." Anthropocene 34, no. : 100286.

Journal article
Published: 19 September 2020 in Minerals
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A gravity core (220 cm depth) was collected to investigate the geochemistry, enrichment, and pollution of trace metals in anoxic sediments from San Simon Bay, an ecosystem of high biological productivity in the northwest of Spain. A five-step sequential extraction procedure was used. The Cu, Pb, and Zn contents decreased with depth, with maximum values in the top layers. Ni and Zn were bound to pyrite fractions, while Cd and Pb were associated with the most mobile fractions. The analyzed metals were associated with the fractions bound to organic matter, mainly with the strongly bound to organic matter fraction. High Cd and Cu values were observed. The fractionation showed a high mobility for Cd (28.3–100%) and Pb (54.0–70.2%). Moreover, the pollution factor and the geoaccumulation index reflected a high contamination for Pb and a moderate contamination for Cu and Zn in the superficial layers, pointing to a possible ecotoxicological risk to organisms in San Simon Bay.

ACS Style

A.M. Ramírez-Pérez; M.A. Álvarez-Vázquez; E. De Uña-Álvarez; E. De Blas. Environmental Assessment of Trace Metals in San Simon Bay Sediments (NW Iberian Peninsula). Minerals 2020, 10, 826 .

AMA Style

A.M. Ramírez-Pérez, M.A. Álvarez-Vázquez, E. De Uña-Álvarez, E. De Blas. Environmental Assessment of Trace Metals in San Simon Bay Sediments (NW Iberian Peninsula). Minerals. 2020; 10 (9):826.

Chicago/Turabian Style

A.M. Ramírez-Pérez; M.A. Álvarez-Vázquez; E. De Uña-Álvarez; E. De Blas. 2020. "Environmental Assessment of Trace Metals in San Simon Bay Sediments (NW Iberian Peninsula)." Minerals 10, no. 9: 826.

Journal article
Published: 14 May 2020 in Marine Chemistry
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This work addresses the study of a sediment core retrieved in the estuary of the Grande-de-Xubia River (Ria of Ferrol), which is among the first industrialized areas in the Iberian Peninsula and has links to the shipbuilding industry since 1750. The chemical analysis of trace elements (i.e. As, Cd, Co, Cr, Cu, Hg, Mo, Ni, Pb, V, and Zn) was coupled with 210Pb dating. The results span a period of about 130 years and cover the whole of the 20th century. Trace element anthropogenic fluxes accumulating in the sediments were calculated and show that human inputs are the most important sources for Cu, Cd, Hg and Zn, being, on average, well over the natural loads. The temporal variation in the anthropogenic contaminants allows the identification of four main phases describing the human-natural input interactions, which in chronological order, are: (i) early industrialization, (ii) industrial acceleration or first industrial transition, (iii) industrial collapse, and (iv) an industrial maturity or a second industrial transition.

ACS Style

Miguel Ángel Álvarez-Vázquez; Paula Álvarez-Iglesias; Elena De Uña-Álvarez; Begoña Quintana; Miguel Caetano; Ricardo Prego. Industrial supply of trace elements during the “Anthropocene”: A record in estuarine sediments from the Ria of Ferrol (NW Iberian Peninsula). Marine Chemistry 2020, 223, 103825 .

AMA Style

Miguel Ángel Álvarez-Vázquez, Paula Álvarez-Iglesias, Elena De Uña-Álvarez, Begoña Quintana, Miguel Caetano, Ricardo Prego. Industrial supply of trace elements during the “Anthropocene”: A record in estuarine sediments from the Ria of Ferrol (NW Iberian Peninsula). Marine Chemistry. 2020; 223 ():103825.

Chicago/Turabian Style

Miguel Ángel Álvarez-Vázquez; Paula Álvarez-Iglesias; Elena De Uña-Álvarez; Begoña Quintana; Miguel Caetano; Ricardo Prego. 2020. "Industrial supply of trace elements during the “Anthropocene”: A record in estuarine sediments from the Ria of Ferrol (NW Iberian Peninsula)." Marine Chemistry 223, no. : 103825.

Journal article
Published: 12 February 2019 in Journal of Soils and Sediments
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Rare earth elements have been used as sediment tracers in river, estuarine and coastal environments but rarely applied as fluvial tributary tracers. Lanthanides (Ln) and yttrium (Y) were quantified in fluvial sediments of the Minho River lower course (NW Iberian Peninsula), where the catchment contains heterogeneous lithologies, to define the characteristic imprints of tributaries and their relevance in the riverine system. Surface sediments were sampled at 36 points in the lower Minho riverbed and its nine main tributaries.The < 2-mm fraction was sieved and ground, and ≈ 100 mg was completely acid-digested with HF and aqua regia in closed Teflon bombs at 100 °C for 1 h. The residue was evaporated, re-dissolved with HNO3 and Milli-Q water, heated 20 min at 75 °C and diluted to 50 cm3 with Milli-Q water. Lanthanides and yttrium were determined using a quadrupole ICP-MS equipped with a Peltier impact bead spray chamber and a concentric Meinhard nebuliser. Blanks accounted for less than 1% of the element concentrations in the samples. The precision and accuracy of the analytical procedures were controlled through reference materials AGV-1 and MAG-1. Contents ranged from 22 to 153 mg Ln kg−1 and 1.5–22.9 mg Y kg−1 and ES-normalised light-heavy Ln fractionation, (LN/HN), varied between 0.6 and 2.6. These wide ranges, together with Eu and Ce anomalies and element-by-element Ln, varied with changes in parental rocks of the lower Minho basin. Minho sediments showed negative Ce anomalies (0.81 ± 0.29) and positive Eu anomalies (1.23 ± 0.18). Sediments received traces of granitic pegmatites and gneissic peralkaline rocks from two tributaries: the Gadanha (22.9 mg Y kg−1; 83 mg Ln kg−1; 0.60 LN/HN; 0.51 Eu/Eu*; 0.88 Ce/Ce*) and the Louro (15.9 mg Y kg−1; 110 mg Lnkg−1; 0.97 LN/HN; 0.69 Eu/Eu*; 1.49 Ce/Ce*). The Tamuxe tributary, flowing through a slate and quartzite fault, provided the lowest source (1.6 mg Y kg−1; 28 mg Ln kg−1; 2.48 LN/HN; 1.01 Eu/Eu*; 0.55 Ce/Ce*). Lanthanide and Y signatures in sediments may be used to trace land-tributary-river influences. The imprints are observed downstream of fluvial confluences but not in all cases, responding to basin lithological changes, particularly for pegmatites and peralkaline rocks. The general REE trend is described using Y contents only. Tributaries, which are responsible for one-fifth of the Minho water load, provide one-half of their sediments. Non-homogeneous sediment patterns may be magnified in dammed rivers such as the Minho.

ACS Style

Ricardo Prego; Pedro Brito; Miguel Ángel Álvarez-Vázquez; Miguel Caetano. Lanthanides and yttrium in the sediments of the lower Minho River (NW Iberian Peninsula): imprint of tributaries. Journal of Soils and Sediments 2019, 19, 2558 -2569.

AMA Style

Ricardo Prego, Pedro Brito, Miguel Ángel Álvarez-Vázquez, Miguel Caetano. Lanthanides and yttrium in the sediments of the lower Minho River (NW Iberian Peninsula): imprint of tributaries. Journal of Soils and Sediments. 2019; 19 (5):2558-2569.

Chicago/Turabian Style

Ricardo Prego; Pedro Brito; Miguel Ángel Álvarez-Vázquez; Miguel Caetano. 2019. "Lanthanides and yttrium in the sediments of the lower Minho River (NW Iberian Peninsula): imprint of tributaries." Journal of Soils and Sediments 19, no. 5: 2558-2569.

Journal article
Published: 01 October 2018 in Science of The Total Environment
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The Umia-Grove Intertidal Complex is located within the Ria of Arousa (NW Iberian Peninsula). Out of its significance for wintering shorebirds it has been included in the Ramsar List of Wetlands of International Importance as well as in international protection networks such as the European Natura 2000 and Important Bird and Biodiversity Areas-BirdLife International. In a sediment analysis conducted in the year 1999, the wetland was found to have been contaminated by potentially toxic trace metals, to wit: Cr, Cu, Ni, and Pb. Sediment samples retrieved in 2014 to make an updated assessment of the condition of the ecosystem showed evidence of the presence of selected trace elements, namely, Cd, Co, Cr, Cu, Ni, Pb, and Zn, within or slightly above the background ranges of local, regional, and general references. In the 15-year time frame between the two samplings there has been noticeable change in the relationship between nature and society as a consequence of the entry into force of a number of regulations aimed at avoiding the emission of contaminants; among others, the ban of Pb in gasoline, the deployment of wastewater treatment plants according to the European Water Framework Directive, and the limitation of the use of Cu pesticides. With the ensuing drop of human pressure, the self-purifying capacity of the ecosystem has effectively contributed to the wetland's recovery. Nevertheless, the application of a normalized enrichment factor to the more recent set of samples suggests the presence of relict low contamination by Cd, Cu, and Ni in localized areas. The compared analysis of the wetland condition in the two years is a sign of the success of the policies and regulations for environmental protection, but further work and more effectiveness are necessary in order to preserve threatened ecosystems of such importance as the Umia-Grove wetland.

ACS Style

Miguel Ángel Álvarez-Vázquez; Serafín Jesús González-Prieto; Ricardo Prego. Possible impact of environmental policies in the recovery of a Ramsar wetland from trace metal contamination. Science of The Total Environment 2018, 637-638, 803 -812.

AMA Style

Miguel Ángel Álvarez-Vázquez, Serafín Jesús González-Prieto, Ricardo Prego. Possible impact of environmental policies in the recovery of a Ramsar wetland from trace metal contamination. Science of The Total Environment. 2018; 637-638 ():803-812.

Chicago/Turabian Style

Miguel Ángel Álvarez-Vázquez; Serafín Jesús González-Prieto; Ricardo Prego. 2018. "Possible impact of environmental policies in the recovery of a Ramsar wetland from trace metal contamination." Science of The Total Environment 637-638, no. : 803-812.

Journal article
Published: 01 December 2017 in Journal of Sea Research
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Bernardez, P., Prego, R., Filgueiras, A.V., Ospina-Alvarez, N., Santos-Echeandía, J., Álvarez-Vázquez, M.A. and Caetano, M. (2017). Lithogenic sources, composition and intra-annual variability of suspended particulate matter supplied from rivers to the Northern Galician Rias (Bay of Biscay). Journal of Sea Research 130:73-84

ACS Style

Patricia Bernárdez; Ricardo Prego; Ana Virginia Filgueiras; Natalia Ospina-Álvarez; Juan Santos-Echeandía; Miguel Angel Álvarez-Vázquez; Miguel Caetano. Lithogenic sources, composition and intra-annual variability of suspended particulate matter supplied from rivers to the Northern Galician Rias (Bay of Biscay). Journal of Sea Research 2017, 130, 73 -84.

AMA Style

Patricia Bernárdez, Ricardo Prego, Ana Virginia Filgueiras, Natalia Ospina-Álvarez, Juan Santos-Echeandía, Miguel Angel Álvarez-Vázquez, Miguel Caetano. Lithogenic sources, composition and intra-annual variability of suspended particulate matter supplied from rivers to the Northern Galician Rias (Bay of Biscay). Journal of Sea Research. 2017; 130 ():73-84.

Chicago/Turabian Style

Patricia Bernárdez; Ricardo Prego; Ana Virginia Filgueiras; Natalia Ospina-Álvarez; Juan Santos-Echeandía; Miguel Angel Álvarez-Vázquez; Miguel Caetano. 2017. "Lithogenic sources, composition and intra-annual variability of suspended particulate matter supplied from rivers to the Northern Galician Rias (Bay of Biscay)." Journal of Sea Research 130, no. : 73-84.

Journal article
Published: 01 December 2017 in Moravian Geographical Reports
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Landform assemblages may be used to define sites of geomorphological interest which are resources for rural sustainability. This paper focuses on the valuation and significance of such sites in the context of one European internal border region, illustrated using a case study from the inland mountains of the Spanish-Portuguese border: the Serra do Larouco. The theoretical and methodological approach used includes the recognition, inventory and assessment of a preliminary list of twenty-eight sites. They comprise diverse granitic landforms which characterise the rural inland landscapes in the North West of the Iberian Peninsula. The results from the qualitative and quantitative assessments were the basis for a final selection of nine sites as significant land resources. An analysis of their key values supports the proposal of different use and management options to promote rural sustainability. A review of the methodology applied and the consideration of other case studies provide a means to interpret and discuss the regional and local significance of the selected sites. The conclusions emphasise the crucial role that values linked to landforms can play in little-known mountainous and rural border regions, suggesting a future research agenda.

ACS Style

Elena De Uña-Álvarez; Miguel Ángel Álvarez-Vázquez; María Del Carmen Cuquejo-Bello. Landform values for rural sustainability: Recognition and assessment in a Spanish–Portuguese border region case study. Moravian Geographical Reports 2017, 25, 257 -270.

AMA Style

Elena De Uña-Álvarez, Miguel Ángel Álvarez-Vázquez, María Del Carmen Cuquejo-Bello. Landform values for rural sustainability: Recognition and assessment in a Spanish–Portuguese border region case study. Moravian Geographical Reports. 2017; 25 (4):257-270.

Chicago/Turabian Style

Elena De Uña-Álvarez; Miguel Ángel Álvarez-Vázquez; María Del Carmen Cuquejo-Bello. 2017. "Landform values for rural sustainability: Recognition and assessment in a Spanish–Portuguese border region case study." Moravian Geographical Reports 25, no. 4: 257-270.

Journal article
Published: 01 November 2017 in Estuarine, Coastal and Shelf Science
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ACS Style

Miguel Ángel Álvarez-Vázquez; Miguel Caetano; Paula Álvarez-Iglesias; María Del Canto Pedrosa-García; Susana Calvo; Elena De Uña-Álvarez; Begoña Quintana; Carlos Vale; Ricardo Prego. Natural and Anthropocene fluxes of trace elements in estuarine sediments of Galician Rias. Estuarine, Coastal and Shelf Science 2017, 198, 329 -342.

AMA Style

Miguel Ángel Álvarez-Vázquez, Miguel Caetano, Paula Álvarez-Iglesias, María Del Canto Pedrosa-García, Susana Calvo, Elena De Uña-Álvarez, Begoña Quintana, Carlos Vale, Ricardo Prego. Natural and Anthropocene fluxes of trace elements in estuarine sediments of Galician Rias. Estuarine, Coastal and Shelf Science. 2017; 198 ():329-342.

Chicago/Turabian Style

Miguel Ángel Álvarez-Vázquez; Miguel Caetano; Paula Álvarez-Iglesias; María Del Canto Pedrosa-García; Susana Calvo; Elena De Uña-Álvarez; Begoña Quintana; Carlos Vale; Ricardo Prego. 2017. "Natural and Anthropocene fluxes of trace elements in estuarine sediments of Galician Rias." Estuarine, Coastal and Shelf Science 198, no. : 329-342.

Journal article
Published: 01 July 2017 in Chemosphere
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Trace element contributions from small rivers to estuaries is an issue barely addressed in the literature. In this work, freshwater flowing into the Ria of Cedeira (NW Iberian Peninsula) was studied during a hydrological year through the input from three rivers, one considered uncontaminated (the Das-Mestas River), a second affected by urban treated wastewater discharges (the Condomiñas River), and the third containing a water reservoir for urban supply (the Forcadas River). With the objective of assessing the possible influence of human pressure, the annual yields for selected trace elements (Al, Fe, As, Cd, Co, Cr, Cu, Mn, Mo, Ni and Pb) were estimated and compared by normalizing by basin surface. Both dissolved and particulate transported elements were considered. After the data treatment and analysis it can be highlighted that: (i) the Das Mestas River is suitable to be included between the short European pristine baseline of small rivers, at least regarding the transported trace elements; (ii) natural enrichments were identified associated to the lithology of the basin in the Das-Mestas River (i.e. As) and in the Condomiñas River (i.e. Co, Cr and Ni); this fact highlights the importance of considering the local background for a proper assessment; (iii) the impoundment in the Forcadas River is related with a general decrease, even depletion, of the particulate and dissolved transported trace elements, except Mn; (iv) the discharge of sewage to the Condomiñas River is increasing the inputs to the ria of some trace elements in the particulate phase (i.e. Al, Cu and Pb). Both observed human-induced changes can be regarded as typical disturbances of trace element contributions from small rivers to estuaries.

ACS Style

Miguel Ángel Álvarez-Vázquez; Ricardo Prego; Miguel Caetano; Elena De Uña-Álvarez; Maryló Doval; Susana Calvo; Carlos Vale. Contributions of trace elements to the sea by small uncontaminated rivers: Effects of a water reservoir and a wastewater treatment plant. Chemosphere 2017, 178, 173 -186.

AMA Style

Miguel Ángel Álvarez-Vázquez, Ricardo Prego, Miguel Caetano, Elena De Uña-Álvarez, Maryló Doval, Susana Calvo, Carlos Vale. Contributions of trace elements to the sea by small uncontaminated rivers: Effects of a water reservoir and a wastewater treatment plant. Chemosphere. 2017; 178 ():173-186.

Chicago/Turabian Style

Miguel Ángel Álvarez-Vázquez; Ricardo Prego; Miguel Caetano; Elena De Uña-Álvarez; Maryló Doval; Susana Calvo; Carlos Vale. 2017. "Contributions of trace elements to the sea by small uncontaminated rivers: Effects of a water reservoir and a wastewater treatment plant." Chemosphere 178, no. : 173-186.

Journal article
Published: 20 February 2017 in Revista Contexto & Educação
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Resumo La incorporación de la universidad española al Espacio Europeo de Educación Superior plantea la necesidad de adoptar estrategias con un nuevo enfoque de la enseñanza-aprendizaje. En este contexto, la educación patrimonial presenta un elevado potencial para el conocimiento y la interpretación de las interacciones naturaleza-sociedad. El reconocimiento y la valoración del patrimonio natural en el marco de la dinámica del territorio sustentan la programación y el desarrollo de una propuesta educativa para el primer año de los estudios universitarios. Centrada en los significados e intereses de las formas de erosión en los sistemas fluviales, la didáctica del patrimonio se presenta conectada a las competencias, los objetivos y los contenidos de una materia de Geografía Física que forma parte de una titulación de Grado (Geografía e Historia) en la Universidad de Vigo (Campus de Ourense, Galicia, España).

ACS Style

Elena De Uña-Álvarez; Miguel Ángel Álvarez-Vázquez. EDUCACIÓN Y PATRIMONIO: UNA ESTRATEGIA DE ENSEÑANZA-APRENDIZAJE EN EL INICIO DE LA EDUCACIÓN SUPERIOR. Revista Contexto & Educação 2017, 31, 81 .

AMA Style

Elena De Uña-Álvarez, Miguel Ángel Álvarez-Vázquez. EDUCACIÓN Y PATRIMONIO: UNA ESTRATEGIA DE ENSEÑANZA-APRENDIZAJE EN EL INICIO DE LA EDUCACIÓN SUPERIOR. Revista Contexto & Educação. 2017; 31 (99):81.

Chicago/Turabian Style

Elena De Uña-Álvarez; Miguel Ángel Álvarez-Vázquez. 2017. "EDUCACIÓN Y PATRIMONIO: UNA ESTRATEGIA DE ENSEÑANZA-APRENDIZAJE EN EL INICIO DE LA EDUCACIÓN SUPERIOR." Revista Contexto & Educação 31, no. 99: 81.

Original article
Published: 20 December 2016 in Geoheritage
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The Miño is the most important river in the NW Iberian Peninsula. When it flows through Ourense town (Spain), the attractiveness of the thermal springs hides the importance of the fluvial potholes developed over bedrock. These forms reflect the strength of erosion processes, linked to fluvial incision over time. Potholes have an environmental, didactic, socio-economic and cultural potential. In order to promote their integration within territorial heritage, this research is focused on a place-based knowledge and practice. This study aimed to define the meanings and interests of fluvial potholes, regarding their sustainable uses as georesources and offering fit information for the key social actors to assist territorial development. An inventory of sculpted forms was carried out in an urban reach of the Miño River. After the site diagnosis and form characterisation, a set of fluvial potholes (82 cases) was identified within the thermal area. The assessment of the geomorphological and use/management interests delivered their values as resources for territorial sustainability. Ten potholes, selected from a preliminary list and identified through the methodology, have a potential for education, leisure and recreation. Actions designed to raise awareness of the interests and values of these geodiversity components are also presented.

ACS Style

Miguel Ángel Álvarez-Vázquez; Elena De Uña-Álvarez. Inventory and Assessment of Fluvial Potholes to Promote Geoheritage Sustainability (Miño River, NW Spain). Geoheritage 2016, 9, 549 -560.

AMA Style

Miguel Ángel Álvarez-Vázquez, Elena De Uña-Álvarez. Inventory and Assessment of Fluvial Potholes to Promote Geoheritage Sustainability (Miño River, NW Spain). Geoheritage. 2016; 9 (4):549-560.

Chicago/Turabian Style

Miguel Ángel Álvarez-Vázquez; Elena De Uña-Álvarez. 2016. "Inventory and Assessment of Fluvial Potholes to Promote Geoheritage Sustainability (Miño River, NW Spain)." Geoheritage 9, no. 4: 549-560.

Journal article
Published: 01 September 2016 in Estuarine, Coastal and Shelf Science
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ACS Style

Miguel Angel Álvarez-Vázquez; Ricardo Prego; Natalia Ospina-Alvarez; Miguel Caetano; Patricia Bernárdez; Maryló Doval; Ana Virginia Filgueiras; Carlos Vale. Anthropogenic changes in the fluxes to estuaries: Wastewater discharges compared with river loads in small rias. Estuarine, Coastal and Shelf Science 2016, 179, 112 -123.

AMA Style

Miguel Angel Álvarez-Vázquez, Ricardo Prego, Natalia Ospina-Alvarez, Miguel Caetano, Patricia Bernárdez, Maryló Doval, Ana Virginia Filgueiras, Carlos Vale. Anthropogenic changes in the fluxes to estuaries: Wastewater discharges compared with river loads in small rias. Estuarine, Coastal and Shelf Science. 2016; 179 ():112-123.

Chicago/Turabian Style

Miguel Angel Álvarez-Vázquez; Ricardo Prego; Natalia Ospina-Alvarez; Miguel Caetano; Patricia Bernárdez; Maryló Doval; Ana Virginia Filgueiras; Carlos Vale. 2016. "Anthropogenic changes in the fluxes to estuaries: Wastewater discharges compared with river loads in small rias." Estuarine, Coastal and Shelf Science 179, no. : 112-123.

Journal article
Published: 01 January 2014 in Microchemical Journal
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9 páginas, 7 figuras, 2 tablasAn increased concern on environmental issues has arisen in recent decades. Human activities have a great impact on the environment, efficient methodologies being needed for quick assessment of possible contamination sources and their effects. This paper describes a fast method for analysis of sediments by Total Reflection X-ray Fluorescence (TXRF) using a simple and rapid sample preparation approach, i.e., Ultrasonic Probe Slurry Sampling (UPSS), as an alternative to digestion. UPSS involves minimal consumption of sample and reagents within the range of microanalysis. A case study focused on a coastal area (Ria of Arousa, NW Spain) is presented. The simultaneous determination of 10 elements (Ti, V, Mn, Fe, Cu, Zn, As, Rb, Sr and Pb) was accomplished by UPSS-TXRF. Method validation was performed by means of several certified reference materials. Distribution patterns, natural background levels and enrichment factors that are indicative of contamination were obtained. Application of principal component analysis (PCA) allowed assessing the origin of trace metals in sediments of the Ria of Arousa.Spanish Ministry of ‘Economy and Competitiveness’, projects CTM2011-28792-C02, CTQ2009-06956 and CTQ2012-32788Peer reviewe

ACS Style

Miguel Ángel Álvarez-Vázquez; Carlos Bendicho; Ricardo Prego. Ultrasonic slurry sampling combined with total reflection X-ray spectrometry for multi-elemental analysis of coastal sediments in a ria system. Microchemical Journal 2014, 112, 172 -180.

AMA Style

Miguel Ángel Álvarez-Vázquez, Carlos Bendicho, Ricardo Prego. Ultrasonic slurry sampling combined with total reflection X-ray spectrometry for multi-elemental analysis of coastal sediments in a ria system. Microchemical Journal. 2014; 112 ():172-180.

Chicago/Turabian Style

Miguel Ángel Álvarez-Vázquez; Carlos Bendicho; Ricardo Prego. 2014. "Ultrasonic slurry sampling combined with total reflection X-ray spectrometry for multi-elemental analysis of coastal sediments in a ria system." Microchemical Journal 112, no. : 172-180.