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A critical review of on-site inorganic arsenic screening methods

Journal of environmental Sciences 2023年第3期125卷 453-469页

作者： Yi He Jingyu Liu Yanhua Duan Xiaofei Yuan Lulu Ma Ratan Dhar Yan Zheng Department of Sciences John Jay College and the Graduate CenterThe City University of New YorkNY 10019USA State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control School of Environmental Science and EngineeringSouthern University of Science and TechnologyShenzhen 518055China Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control School of Environmental Science and EngineeringSouthern University of Science and TechnologyShenzhen 518055China Queensland Alliance for Environmental Health Sciences(QAEHS) The University of QueenslandQLD 4102Australia Department of Earth and Physical Sciences York CollegeThe City University of New YorkNY 11451USA

Approximately 94 to 220 million people worldwide are at risk of drinking well water containing arsenic > 10 μg/L, the WHO guideline value. To identify non-compliant domestic wells, assess health risks and reduce exposure, accurate and rapid on-site inorganic arsenic screening methods are desirable because all domestic wells worldwide need to be ***, the principles, advantages and limitations of commonly used colorimetry, electrochemistry, and biosensing methods are critically reviewed, with the performance compared with laboratory-based benchmark methods. Most commercial kits are based on the classic Gutzeit reaction. Despite being semi-quantitative, the more recent and more expensive products display improved and acceptable accuracy and shorter testing time (~10 min). Carried out by trained professionals, electrochemical methods are also feasible for on-site analysis, although miniaturization is desirable yet challenging. Biosensing using whole bacterial cells or bio-engineered materials such as aptamers is promising, if incorporated with function specific nanomaterials and biomaterials. Since arsenic is frequently found as arsenite in reducing groundwater and subject to oxidation during sampling, transportation and storage, on-site separation and sample preservation are feasible but the specific methods should be chosen based on sample matrix and tested before use. To eliminate arsenic exposure among hundreds of millions of mostly rural residents worldwide, we call for concerted efforts in research community and regulatory authority to develop accurate, rapid, and affordable tests for on-site screening and monitoring of arsenic in drinking water. Access to affordable testing will benefit people who are socioeconomically disadvantaged.

关键词： Inorganic arsenic On-site analysis Drinking water groundwater Field test

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Influence of surface properties and antecedent environmental conditions on particulate-associated metals in surface runoff

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environmental Science and Ecotechnology 2020年第2期2卷 9-15页

作者： Zhenyu Wang Pei Hua Heng Dai Rui Li Beidou Xi Dongwei Gui Jin Zhang Peter Krebs Institute of Urban Water Management Technische Universit€at Dresden01062DresdenGermany The Environmental Research Institute MOE Key Laboratory of Environmental Theoretical ChemistrySouth China Normal University510006GuangzhouChina Institute of Groundwater and Earth Sciences Jinan University510632GuangzhouChina State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution Chinese Research Academy of Environmental SciencesBeijing100012China State Key Laboratory of Desert and Oasis Ecology Xinjiang Institute of Ecology and GeographyChinese Academy of SciencesUrumqi830011XinjiangChina

Particulate-associated trace metals have been regarded as an important pollution source for urban surface ***,Pb,Cu,Zn and total solids(TS)washed off two different surfaces(low-elevated facade and road surfaces)under two kinds of antecedent environmental conditions(dry and snow-melting)were determined in this ***-vacuuming sweeping(WVS)and surface washing(SW)methods,representing the maximum pollution potential and common rainfall-induced wash-off condition respectively,were used to collect the particulate *** result shows that the wash-off concentrations of trace metals were found in the order of Cd(2.28±2.08 mg/l)38% and >79% of metals and TS concentrations in the facade surface and road surface runoff *** wash-off concentrations of Cd,Cu,and Zn on the road surface 45e780% higher than those on the facade *** sensitivity analysis based on the Bayesian network indicates that the wash-off concentrations of metals were mainly dependent on the antecedent environmental conditions or the surface properties while the sampling methods had a minor ***,to accurately model the pollutant migration in the surface runoff requires an improving method considering different surfaces and antecedent environment conditions.

关键词： Trace metal Road and facade Wash-off Snowmelt Bayesian network

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Soil microbial necromass carbon in forests:A global synthesis of patterns and controlling factors

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Soil Ecology Letters 2024年第4期6卷 203-215页

作者： Shan Xu Xiaoyu Song Hui Zeng Junjian Wang State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control School of Environmental Science and EngineeringSouthern University of Science and TechnologyShenzhen 518055China Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control School of Environmental Science and EngineeringSouthern University of Science and TechnologyShenzhen 518055China School of Urban Planning and Design Shenzhen Graduate SchoolPeking UniversityShenzhen 518055China

Boreal and temperate forests had higher MNC and FNC/BNC than other forest *** forests had higher MNC and lower FNC/BNC than other forest *** dependence of MNC on forest type varied among forest *** and soil total N were the important factors on MNC and MNC/***,soil pH,and clay content were identified as direct factors on FNC/*** microbial necromass carbon(MNC)is an important contributor to soil organic carbon(SOC)and plays a vital role in carbon sequestration and climate change ***,it remains unclear whether the content,contribution to SOC(MNC/SOC),and fungal-to-bacterial necromass carbon ratio(FNC/BNC)of MNC vary across forest biomes and *** summarizing data from 1704 points across 93 forest sites,we explored the spatial patterns of MNC,MNC/SOC,and FNC/BNC in the surface layer of 0–20 cm of forest soils,as well as the controlling factors ***,boreal and temperate forests had higher MNC and FNC/BNC values than tropical,subtropical,and Mediterranean forests,whereas both boreal and Mediterranean forests had low MNC/SOC *** forests had higher MNC and lower FNC/BNC than broadleaved and coniferous forests,whereas MNC/SOC was higher in broad-leaved forests than that in coniferous ***,the dependence of MNC on forest type also varies among forest *** analyses identified soil total N as one of the most important factors affecting MNC and MNC/SOC;whereas MAT,soil pH,and clay content were identified as the important factors affecting FNC/*** synthesis is critical for managing soil MNC to mitigate climate change in forests.

关键词： soil microbial necromass carbon MNC/SOC forest biome forest type climate soil properties

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Water:The lifeblood of the Earth-human system revealed in elemental correlations

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Science China Earth Sciences 2023年第10期66卷 2386-2390页

作者： Zimeng WANG Yongsheng LIU Anhuai LU Yanxin WANG Department of Environmental Science and Engineering Fudan UniversityShanghai200433China State Key Laboratory of Geological Processes and Mineral Resources School of Earth SciencesChina University of GeosciencesWuhan430074China Beijing Key Laboratory of Mineral Environmental Function School of Earth and Space SciencesPeking UniversityBeijing100871China MOE Key Laboratory of Groundwater Quality and Health State Environmental Protection Key Laboratory of Source Apportionment and Control of Aquatic PollutionSchool of Environmental StudiesChina University of GeosciencesWuhan430074China

*** and human history The rich chemistry of Earth's elements played an inherent and multifaceted role in shaping the course of human ***,the more inert an element is,the simpler it becomes to extract it from miner... 详细信息

关键词： Earth minerals simpler

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Characteristics and formation mechanism of regional haze episodes in the Pearl River Delta of China

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Journal of environmental Sciences 2018年第1期30卷 236-249页

作者： Wenguang Li Xingang Liu Yuanhang Zhang Kang Sun Yusheng Wu Rui Xue Limin Zeng Yu Qu Junling An State Key Laboratory of Water Environment Simulation School of EnvironmentBeijing Normal UniversityBeijing 10087SChina State Key Joint Laboratory of Environment Simulation and Pollution Control College of Environmental Sciences and EngineeringPeking UniversityBeijing 100871China State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry Institute of Atmospheric PhysicsChineseAcademy of SciencesBeijing 100029China

To investigate the characteristics and the specific mechanism of continuous haze,comprehensive measurements were conducted from 15 October to 19 November in the Atmospheric Environment Monitoring Super-Station in Heshan of Guangdong *** haze episodes occurred in October and November 2014 in the Pearl River Delta（PRD）region. The meteorological parameters, gas data, chemical compositions, and optical parameters of the aerosols were obtained. Among these events, the second haze episode,with the highest concentration of PM2.5 of 187.51 μg/m^3, was the most severe. NO^3-was always higher than SO_4^（2-）, which indicated that motor vehicles played an important role in the haze, even though the oxidation rate from SO_2 to SO_4^（2-）was faster than that of NOXto NO_3^-. The difference between the hourly averages of Na＋and K＋during the haze episode and clean days was small, implying that straw combustion and sea salt had no significant effect on the occurrence of haze, and the backward trajectories of the air masses also conformed with this result. The air pollutants were difficult to disperse because of the significant decrease in the planetary boundary layer（PBL） height. Relative humidity played a crucial role in the formation of haze by leading to hygroscopic growth of the diameter of aerosols.

关键词： Haze episodes Chemical characteristics Formation mechanism PRD

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Transcriptomic analysis of bisphenol AF on early growth and development of zebrafish(Danio rerio)larvae

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environmental Science and Ecotechnology 2020年第4期4卷 1-11页

作者： Rongzhen Li Shuai Liu Wenhui Qiu Feng Yang Yi Zheng Ying Xiong Guanrong Li Chunmiao Zheng State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control School of Environmental Science and EngineeringSouthern University of Science and TechnologyShenzhen518055China Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control School of Environmental Science and EngineeringSouthern University of Science and TechnologyShenzhen518055China School of Environmental and Chemical Engineering Shanghai UniversityShanghai200444China Shenzhen Municipal Engineering Lab of Environmental IoT Technologies Southern University of Science and TechnologyShenzhen518055Guangdong ProvinceChina

Bisphenol AF(BPAF),an alternative to bisphenol A,is widely detected in aquatic *** to health concerns,the toxic effects of BPAF on organisms are drawing *** present study aims to evaluate the toxicity of BPAF,combining the results of omics techniques and *** transcriptome sequencing(RNA-seq),we obtained 391,648,512,and 545 differentially expressed genes(DEGs)in 0.1,1,10,and 100 mg/L BPAF-exposed zebrafish larvae,*** ontology(GO)analysis and Kyoto Encyclopedia of Genes and Genomes(KEGG)enrichment revealed the early development,stimulus-response,and MAPK signaling pathway were significantly affected by *** addition,five hub genes(fgf3,fgf4,map2k1,myca,and casp3b)were highlighted as the key genes in MAPK signaling pathway using the protein-protein interaction ***,the RNA-seq results showed that early development and stimulus-response were the main processes affected by BPAF,which was consistent with our morphological and pathological *** hatching rate of zebrafish embryos in 1 and 10 mg/L BPAF groups was significantly inhibited,and the oxidative stress indexes,including the level of total antioxidant capacity(T-AOC),superoxide dismutase(SOD),and lipid peroxidation(LPO),were significantly increased by the 100 mg/L BPAF ***,the activity of alkaline phosphatase(AKP)was significantly decreased in all BPAF exposure *** conclusion,exposure to BPAF at environmental relevant concentrations affected the early development and immune system of zebrafish larvae by modulating MAPK signaling pathway,and our results provide solid evidence for the future studies on the toxicity of bisphenols.

关键词： Bisphenol AF Zebrafish Early development Oxidative stress MAPK signaling Pathway

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Effects of mixture ratio on anaerobic co-digestion with fruit and vegetable waste and food waste of China

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Journal of environmental Sciences 2011年第8期23卷 1403-1408页

作者： Jia Lin Jiane Zuo Lili Gan Peng Li Fenglin Liu Kaijun Wang Lei Chen Hainan Gan State Key Joint Laboratory of Environment Simulation and Pollution Control (SKLESPC) School of EnvironmentTsinghua'University Beijing 100084 China. Joint R & D Ceter of Tsinghua Univesity (Department of Environmental Science and Engineering) andShandong Sifon Environmental Protection & Bio-Energy Co. Ltd. Beijing 100084 China

The biochemical methane potentials for typical fruit and vegetable waste （FVW） and food waste （FW） from a northern China city were investigated, which were 0.30, 0.56 m3 CH4/kgVS （volatile solids） with biodegradabilities of 59.3% and 83.6%, respectively. Individual anaerobic digestion testes of FVW and FW were conducted at the organic loading rate （OLR） of 3 kg VS/（m3-day） using a lab-scale continuous stirred-tank reactor at 35°C. FVW could be digested stably with the biogas production rate of 2.17 ma/（m3-day） and methane production yield of 0.42 m3 CH4/kg VS. However, anaerobic digestion process for FW was failed due to acids accumulation. The effects of FVW： FW ratio on co-digestion stability and performance were further investigated at the same OLR. At FVW and FW mixing ratios of 2：1 and 1：1, the performance and operation of the digester were maintained stable, with no accumulation of volatile fatty acids （VFA） and ammonia. Changing the feed to a higher FW content in a ratio of FVW to FW 1：2, resulted in an increase in VFAs concentration to 1100-1200 rag/L, and the methanogenesis was slightly inhibited. At the optimum mixture ratio 1：1 for co-digestion of FVW with FW, the methane production yield was 0.49 m3 CH4/kg VS, and the volatile solids and soluble chemical oxygen demand （sCOD） removal efficiencies were 74.9% and 96.1%, respectively.

关键词： anaerobic co-digestion biochemical methane potential continuous stirred-tank reactor （CSTR） fruit and vegetable waste food waste

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Development of a novel conductance-based technology for environmental bacterial sensing

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Chinese Science Bulletin 2013年第4期58卷 440-448页

作者： SHEN FangXia TAN MiaoMiao XU Hong XU ZhenCheng YAO MaoSheng State Key Joint Laboratory of Environmental Simulation and Pollution Control College of Environmental Sciences and Engineering Peking University College of Mechanical and Electrical Engineering Beijing Union University Department of Reproductive Health Guangdong Women and Children Hospital South China Institute of Environmental Science Ministry of Environmental Protection

In this study, a simple impedance based technology for measuring bacterial concentrations was developed. The measurement system includes the signal amplification, copper probes and a sample loader. During the experiments, the conductance of Bacillus subtilis var niger, Pseudomonas fluorescens, and Escherichia coli were measured using the combination of a pre-amplifier and a lock-in amplifier. The conductance data were modeled verses the bacterial concentrations. Results indicated that the relationship between the conductance of bacterial suspensions and their concentrations follows a generic model: Y=C1+C2×e ( X/C3 ) , where Y is the conductance (S), X is the bacterial concentration (Number/mL: abbreviated to N/mL) for all species tested, and C1 3 are constants. Gram negative P. fluorescens and E. coli assumed similar conductance curves, which were flatter than that of gram positive B. subtilis var niger. For P. fluorescens and E. coli the culturing technique resulted in higher concentration levels (statistically significant) from 2 to 4 times that measured by the impedance based technology. For B. subtilis var niger, both methods resulted in similar concentration levels. These differences might be due to membrane types, initial culturability and the obtained conductance curves. The impedance based technology here was shown to obtain the bacterial concentration instantly, holding broad promise in realtime monitoring biological agents.

关键词：技术开发细菌检测电导数基础 Bacillus 细菌浓度阻抗测量环境

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Removal of pharmaceutical and personal care products by sequential ultraviolet and ozonation process in a full-scale wastewater treatment plant

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Frontiers of environmental Science & Engineering 2014年第1期8卷 62-68页

作者： Qian SU Jun HUANG Shuguang LU Shubo DENG Bin WANG Wentao ZHAO Zhaofu QIU Gang YU State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process School of Resources and Environmental Engineering East China University of Science and Technology Shanghai 200237 China School of Environment THU - VEOLIA Joint Research Center for Advanced Environmental Tec'hnolo~y Tsinghua'University Beijing 100084 China State Key Laboratory of Pollution Control and Resource Reuse Tongji University Shanghai 200092 China State Environmental Protection Key Laboratory of Microorganism Application and Risk Control (MARC) Tsinghua University Beijing 10084 China

The application of appropriate advanced treat- ment process in the municipal wastewater treatment plants （WWTPs） has become an important issue considering the elimination of emerging contaminants, such as pharma- ceutical and personal care products （PPCPs）. In the present study, the removal of 13 PPCPs belonging to different therapeutic classes by the sequential ultraviolet （UV） and ozonation process in a full-scale WWTP in Beijing was investigated over the course of ten months. Most of the target PPCPs were effectively removed, and the median removal efficiencies of individual PPCPs, ranging from -13% to 89%, were dependent on their reaction rate constants with molecular ozone. Noticeable fluctuation in the removal efficiencies of the same PPCPs was observed in different sampling campaigns. Nevertheless, the sequential UV and ozonation process still made a significant contribution to the total elimination of most PPCPs in the full-scale WWTP, by compensating for the poor or fluctuant removal performance of PPCPs by biologic treatment process.

关键词： PPCPs advanced treatment ozone fluctua-tion removal contribution

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Contaminant removal from low-concentration polluted river water by the bio-rack wetlands

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Journal of environmental Sciences 2012年第6期24卷 1006-1013页

作者： Ji Wang Lanying Zhang Shaoyong Lu Xiangcan Jint Shu Gan Key Laboratory of Groundwater Resources and Environment Ministry of EducationJilin UniversityChangchun 130021China State Environmental Protection Key Laboratory for Lake Pollution Control Engineering and Technology Center of LakeResearch Center of Lake EnvironmentChinese Research Academy of Environment SciencesBeijing 100012China College of Resources and Environment Hunan Agriculture UniversityChangsha 410128China

The bio-rack is a new approach for treating low-concentration polluted river water in wetland systems.A comparative study of the efficiency of contaminant removal between four plant species in bio-rack wetlands and between a bio-rack system and control system was conducted on a small-scale （500 mm length × 400 mm width × 400 mm height） to evaluate the decontamination effects of four different wetland *** was generally a significant difference in the removal of total nitrogen （TN）,ammonia nitrogen （NH 3-N） and total phosphorus （TP）,but no significant difference in the removal of permanganate index （COD Mn） between the bio-rack wetland and control ***-rack wetland planted with Thalia dealbata had higher nutrient removal rates than wetlands planted with other *** fine-root （root diameter 3 mm） biomass rather than total plant biomass was related to nutrient removal *** study suggested that the nutrient removal rates are influenced by plant species,and high fine-root biomass is an important factor in selecting highly effective wetland plants for a bio-rack *** to the mass balance,the TN and TP removal were in the range of 61.03-73.27 g/m^2 and 4.14-5.20 g/m^2 in four bio-rack wetlands during the whole operational *** N and P removal by plant uptake constituted 34.9%-43.81% of the mass N removal and 62.05%-74.81% of the mass P *** study showed that the nitrification/denitrification process and plant uptake process are major removal pathways for TN,while plant uptake is an effective removal pathway for TP.

关键词： bio-rack constructed wetland fine-root biomass low-concentration polluted river water plants uptake

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