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Yangyang Chen
Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region, Ministry of Education, Chang'an University, Xi'an, 710054, China

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Article
Published: 24 June 2020 in Environmental Monitoring and Assessment
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Highway construction is time consuming and complicated. Various environmental issues can be encountered during this process. Therefore, it is necessary to assess the impact of ecologic environment in highway construction. However, the traditional assessment approaches paid more attention to the environmental factors rather than the ecological problems, and the weights of evaluation indexes were assigned with relatively average values, which cannot comprehensively and accurately to assess the impact of ecological environment in highway construction. In order to solve these problems, this paper established a new model to combine improved group AHP and FCE. A total of six main factors and 22 sub-factors from three aspects of social, ecological, and natural environment were identified. The model and index system were applied to the ecological environment impact assessment of the highway from the city of Hanzhong to Lueyang County section in Shaanxi Province, and compared with traditional fuzzy AHP approach to verify the feasibility of this model. The results showed that only the ranking of social and ecological factor changed when comparing with the traditional approach. The weight of social factor determined by the improved approach was 0.2835, while that of the traditional approach was only 0.2365, and the weight difference was 0.047. This improved approach highlighted the importance of social factor and overcame the equal weight distribution of traditional approach, which made the overall weight ratio distribution more reasonable and objective. The comprehensive assessment result was 0.3482, which was in line with the “general impact” level. This was consistent with the actual situation of highway construction. The improved group AHP-FCE model could be used successfully for assessing the impact of the ecological environment in highway construction, and it had good applicability and popularization value in ecological environment assessment.

ACS Style

Dan Zhang; Shengke Yang; Zongzhou Wang; Chunyan Yang; Yangyang Chen. Assessment of ecological environment impact in highway construction activities with improved group AHP-FCE approach in China. Environmental Monitoring and Assessment 2020, 192, 1 -18.

AMA Style

Dan Zhang, Shengke Yang, Zongzhou Wang, Chunyan Yang, Yangyang Chen. Assessment of ecological environment impact in highway construction activities with improved group AHP-FCE approach in China. Environmental Monitoring and Assessment. 2020; 192 (7):1-18.

Chicago/Turabian Style

Dan Zhang; Shengke Yang; Zongzhou Wang; Chunyan Yang; Yangyang Chen. 2020. "Assessment of ecological environment impact in highway construction activities with improved group AHP-FCE approach in China." Environmental Monitoring and Assessment 192, no. 7: 1-18.

Journal article
Published: 09 October 2018 in Materials
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In order to prepare parabolic superhydrophobic materials, copper meshes were used as the substrate and ultrasonic etching and oxidative corrosion were carried out with FeCl3 solution and H2O2 solution, respectively, and then the surface was modified with stearic acid (SA). The topological structure and surface wettability of the prepared mesh were characterized by fluorescence microscope, scanning electron microscopy and contact angle measurement. Finally, the as-prepared copper meshes were applied to oil-water separation. The results showed that the micro-nano-mastoid structure on the surface of the copper mesh was flaky bulges, forming a rough structure similar to a paraboloid. When the oxidative corrosion time of H2O2 was 1 min, it is more beneficial to increase the hydrophobicity of the surface of the copper mesh and increase the contact angle of water droplets on the surface of the membrane. Additionally, based on superhydrophobic materials of the parabolic copper mesh, the static contact angles of the water droplets, engine oil and carbon tetrachloride with the surface were approximately 153.6°, 5° and 0.1°, respectively and the sliding angle of the water droplets with the surface were approximately 4.9°. The parabolic membrane was applied to discuss the separation efficiency of different oils with deionized water and the separation efficiency was obtained as benzene > carbon tetrachloride > oil > machine oil. Therefore, based on the research, the parabolic superhydrophobic material has good efficiency of oil-water separation.

ACS Style

Xiaoying Qiao; Chunyan Yang; Qian Zhang; Shengke Yang; Yangyang Chen; Dan Zhang; Xiaoyu Yuan; Wenke Wang; Yaqian Zhao. Preparation of Parabolic Superhydrophobic Material for Oil-Water Separation. Materials 2018, 11, 1914 .

AMA Style

Xiaoying Qiao, Chunyan Yang, Qian Zhang, Shengke Yang, Yangyang Chen, Dan Zhang, Xiaoyu Yuan, Wenke Wang, Yaqian Zhao. Preparation of Parabolic Superhydrophobic Material for Oil-Water Separation. Materials. 2018; 11 (10):1914.

Chicago/Turabian Style

Xiaoying Qiao; Chunyan Yang; Qian Zhang; Shengke Yang; Yangyang Chen; Dan Zhang; Xiaoyu Yuan; Wenke Wang; Yaqian Zhao. 2018. "Preparation of Parabolic Superhydrophobic Material for Oil-Water Separation." Materials 11, no. 10: 1914.

Journal article
Published: 22 August 2018 in International Journal of Environmental Research and Public Health
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To examine the residual and distributions of tetracycline antibiotics in the Weihe River, SPE-UPLC (solid phase extraction-ultra performance liquid chromatography with UV-Vis detection) was employed to analyze the oxytetracycline (OTC), chlortetracycline (CTC), and minocycline (MC) of 41 surface water and 35 sediment samples collected from main streams, tributaries, and main sewage outlets. The results showed that: (1) The order of residual levels of tetracycline antibiotics in water and sediment from high to low was the following: OTC > CTC > MC., considering the water solubilities are 313 mg/L, 630 mg/L, and 50200mg/L and octanol water partition coefficients (Kow) are 7.94, 4.16, and 1.12 for OTC, CTC, and MC, respectively. Thus, the distribution of antibiotics was not only related to the basic properties of antibiotics, but also some environmental factors. The concentrations of OTC in water and sediment were in the range of 1.56–87.89 ng/L and 6.13–45.38 ng/g (mean value of 16.13 ng/L and 20.60 ng/g), respectively; while CTC was 1.07–26.78 ng/L and 6.17–32.29 ng/g (mean value of 4.96 ng/L and 14.48 ng/g), respectively; and MC was 0.28–12.35 ng/L and 4.80–29.74 ng/g (mean value of 1.70 ng/L and 12.96 ng/g), respectively. There were maximum concentrations in all sewage outlets. Compared with other areas in China, tetracyclines residual in the Weihe river were at a medium level; (2) in spatial distribution, the levels of tetracyclines in water and sediment from the middle and upper reaches were higher than the lower reaches. Meanwhile, the sewage outfalls and livestock farm waste water discharge appeared to be the main sources of tetracycline antibiotics in the Weihe River; (3) ecological risk assessment revealed that in main streams and tributaries, OTC and CTC may be at a low ecological risk level; while in sewage outfalls, they may represent a medium ecological risk level.

ACS Style

Ying Li; Jie Fang; Xiaoyu Yuan; Yangyang Chen; HongBin Yang; Xiaohua Fei. Distribution Characteristics and Ecological Risk Assessment of Tetracyclines Pollution in the Weihe River, China. International Journal of Environmental Research and Public Health 2018, 15, 1803 .

AMA Style

Ying Li, Jie Fang, Xiaoyu Yuan, Yangyang Chen, HongBin Yang, Xiaohua Fei. Distribution Characteristics and Ecological Risk Assessment of Tetracyclines Pollution in the Weihe River, China. International Journal of Environmental Research and Public Health. 2018; 15 (9):1803.

Chicago/Turabian Style

Ying Li; Jie Fang; Xiaoyu Yuan; Yangyang Chen; HongBin Yang; Xiaohua Fei. 2018. "Distribution Characteristics and Ecological Risk Assessment of Tetracyclines Pollution in the Weihe River, China." International Journal of Environmental Research and Public Health 15, no. 9: 1803.

Journal article
Published: 10 July 2018 in International Journal of Environmental Research and Public Health
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The method of Three-Dimensional Excitation Emission Matrix Fluorescence Spectrophotometer was used to identify the interaction mechanism between humic acid (HA) and antibiotics. The effects of antibiotic concentration, temperature, and pH on the bonding strength between HA and antibiotics were investigated. The results showed that with the increase of antibiotics concentration, the quenching effect on HA was enhanced. The quenching of HA by both oxytetracycline (OTC) and sulfadiazine (SD) is a single static quenching of the complexes, and the interaction forces are mainly a hydrogen bond and the van der Waals force. The quenching constant KsvOTC > KsvSD and the binding constant KbOTC > KbSD, indicates that HA has a more obvious quenching effect on OTC. The Kb of HA by OTC ranged from 3.223 × 103 to 12.784 × 103 L·mol−1 in the range of 298 K to 313 K, while the Kb of HA by SD ranged from 2.051 × 103 to 5.533 × 103 L·mol−1. With the increase of temperature, the quenching constant Ksv and binding constant Kb of both OTC and SD by HA gradually decrease, and the low temperature is beneficial to the interaction. The composite of OTC and HA is more stable than SD. Under neutral alkaline conditions, both OTC and SD had the strongest quenching effect on HA, and the resulting complex was the most stable. However, the Ksv and Kb of HA by OTC were greater than SD in the pH range of the experiment and the pH effect on quenching of HA by OTC (Ksv) was greater than that of SD.

ACS Style

Runze Wang; Shengke Yang; Jie Fang; Zongzhou Wang; Yangyang Chen; Dan Zhang; Chunyan Yang. Characterizing the Interaction between Antibiotics and Humic Acid by Fluorescence Quenching Method. International Journal of Environmental Research and Public Health 2018, 15, 1458 .

AMA Style

Runze Wang, Shengke Yang, Jie Fang, Zongzhou Wang, Yangyang Chen, Dan Zhang, Chunyan Yang. Characterizing the Interaction between Antibiotics and Humic Acid by Fluorescence Quenching Method. International Journal of Environmental Research and Public Health. 2018; 15 (7):1458.

Chicago/Turabian Style

Runze Wang; Shengke Yang; Jie Fang; Zongzhou Wang; Yangyang Chen; Dan Zhang; Chunyan Yang. 2018. "Characterizing the Interaction between Antibiotics and Humic Acid by Fluorescence Quenching Method." International Journal of Environmental Research and Public Health 15, no. 7: 1458.

Journal article
Published: 09 January 2018 in International Journal of Environmental Research and Public Health
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The adsorption behavior and mechanism for the uptake of fluoride ions by untreated and desugared reed residues (roots, stems and leaves) were studied through adsorption experiments, elemental analysis, infrared spectroscopy and surface area analysis. The results showed that the adsorption capacity of untreated and desugared reeds followed the order: desugared roots 2136 mg/kg > desugared leaves 1825 mg/kg > desugared stems 1551 mg/kg > untreated roots 191 mg/kg > untreated stems 175 mg/kg > untreated leaves 150 mg/kg, so adsorption capacity of desugared reeds was larger than that of the untreated reeds. The adsorption kinetic of fluoride ions followed a pseudo-first-order model. A Langmuir model could be used to fit the isothermal adsorption process which was a spontaneous endothermic reaction involving mainly physical adsorption. The ΔG for the uptake of fluoride by the desugared reeds was more negative, so the degree of spontaneity was higher than for the use of the untreated reeds. After samples were desugared, the specific surface area and aromaticity of the reed increased, while the polarity and hydrophilicity decreased, which explained the adsorption amount of desugared reed was higher than that of the untreated. This study enriches techniques and methods of removing fluoride ions from water.

ACS Style

Rong Song; Shengke Yang; Haiyang Xu; Zongzhou Wang; Yangyang Chen; Yanhua Wang. Adsorption Behavior and Mechanism for the Uptake of Fluoride Ions by Reed Residues. International Journal of Environmental Research and Public Health 2018, 15, 101 .

AMA Style

Rong Song, Shengke Yang, Haiyang Xu, Zongzhou Wang, Yangyang Chen, Yanhua Wang. Adsorption Behavior and Mechanism for the Uptake of Fluoride Ions by Reed Residues. International Journal of Environmental Research and Public Health. 2018; 15 (1):101.

Chicago/Turabian Style

Rong Song; Shengke Yang; Haiyang Xu; Zongzhou Wang; Yangyang Chen; Yanhua Wang. 2018. "Adsorption Behavior and Mechanism for the Uptake of Fluoride Ions by Reed Residues." International Journal of Environmental Research and Public Health 15, no. 1: 101.