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A novel colorimetric method for field arsenic speciation analysis

Journal of environmental Sciences 2012年第7期24卷 1341-1346页

作者： Shan Hu Jinsuo Lu Chuanyong Jing State Key Laboratory of environmental Chemistry and Ecotoxicology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China School of environmental and municipal Engineering Xi'an University of Architecture and TechnologyXi'an 710055China

Accurate on-site determination of arsenic （As） concentration as well as its speciation presents a great environmental challenge especially to developing countries. To meet the need of routine field monitoring, we developed a rapid colorimetric method with a wide dynamic detection range and high precision. The novel application of KMnO4 and CHaN2S as effective As（III） oxidant and As（V） reductant, respectively, in the formation of molybdenum blue complexes enabled the differentiation of As（III） and As（V）. The detection limit of the method was 8 ~tg/L with a linear range （R2 = 0.998） of four orders of magnitude in total As concentrations. The As speciation in groundwater samples determined with the colorimetric method in the field were consistent with the results using the high performance liquid chromatography atomic fluorescence spectrometry, as evidenced by a linear correlation in paired analysis with a slope of 0.9990- 0.9997 （p 〈 0.0001, n = 28）. The recovery of 96%-116% for total As, 85%-122% for As（III）, and 88%-127% for As（V） were achieved for groundwater samples with a total As concentration range 100-800 μg/L. The colorimetric result showed that 3.61 g/L As（III） existed as the only As species in a real industrial wastewater, which was in good agreement with the HPLC-AFS result of 3.56 g/L As（Ⅲ）. No interference with the color development was observed in the presence of sulfate, phosphate, silicate, humic acid, and heavy metals from complex water matrix. This accurate, sensitive, and easy-to-use method is especially suitable for field As determination.

关键词： arsenic speciation colorimetric method groundwater field analysis

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Influences of accumulated mileage and technological changes on emissions of regulated pollutants from gasoline passenger vehicles

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Journal of environmental Sciences 2018年第9期30卷 197-206页

作者： Qingyu Zhang Juwang Fan Weidong Yang Fang Ying Zhen Bao Yi Sheng Cheng Lin Xuan Chen Department of environmental Engineering College of Environmental and Resources Sciences Zhejiang University Hangzhou 310058 China Hangzhou environmental monitoring center Station Hangzhou 310007 China State Key Laboratory of environmental Criteria and Risk Assessment Chinese Research Academy of Environmental SciencesBeijing 100012 China

In this study, the influences of accumulated mileage （deterioration） and technological changes （emission standards） on emission factors （EFs） of regulated pollutants （CO, HC, and NOx） from gasoline passenger vehicles were investigated based on Inspection and Maintenance （I/M） data using the chassis dynamometer method. The accumulated mileage of passenger vehicles was significantly linearly correlated with vehicle age. For most cases, the average EFs of CO, HC and NOx were significantly linearly correlated with accumulated mileage, indicating that emission deterioration had a significant impact on pollutant EFs. Implemented emission standards markedly influenced the EFs of regulated pollutants, and EFs markedly decreased with progressing emission standards. The present study also compared EFs of regulated pollutants between this study and the International vehicle emission （IVE） model, and marked differences in EFs were seen with variations in emission standards, vehicle types and accumulated mileage; NOx EFs in this study were higher than in the IVE model. The results provide new insight into estimating regulated pollutant emissions using the IVE model.

关键词： Gasoline passenger vehicle I/M program Emission factor Emission standard Emission deterioration

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Comparison of degradation reactions of Acid Yellow 61 in both oxidation processes of H_2O_2/UV and O_3

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Journal of environmental Sciences 2001年第3期13卷 304-310页

作者： WANG Yi zhong 1, A.Yedeler 2, A. Kettrup 2(1 Research center for Eco environmental Sciences, Chinese Academy of Sciences, beijing 100085, China 2 GSF Institute of ecological Chemistry, Neuherberg, Postfach 1129, 85758 Neuherberg, Germany) Research center for Eco-environmental Sciences Chinese Academy of Sciences Beijing 100085 China GSF-Institute of ecological Chemistry Neuherberg Postfach 1129 85758 Neuherberg Germany

The comparison of degradation of Acid Yellow 61 as a model dye compound in both oxidation processes of H 2O 2/UV and O 3 has been studied. When the decolorization rate of Acid Yellow 61 in both reactions presented similar, it was found there are some differences from the results of AOX removal and production of inorganic ions and organic acids. The results reveal that the H 2O 2/UV has beneficial effect on mineralization than O 3 only for degradation of Acid Yellow 61 solution and it is possible for enhancement of method efficiency by taking longer reaction time and addition of high concentration of oxidants.

关键词： oxidation process H 2O 2/UV O 3 dye compound

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Regulated emission characteristics of in-use LNG and diesel semi-trailer towing vehicles under real driving conditions using PEMS

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Journal of environmental Sciences 2020年第2期32卷 155-164页

作者： Liqun Lv Yunshan Ge Zhe Ji Jianwei Tan Xin Wang Lijun Hao Zhiwei Wang Mengzhu Zhang Chunjie Wang Haidan Liu National Laboratory of Auto Performance&Emission Test School of Mechanical EngineeringBeijing Institute of TechnologyBeijing 100081China Vehicle Emission Control center Chinese Research Academy of Environmental SciencesBeijing 100081China Tangshan environmental monitoring Centre Tangshan 063000China

On-road driving emissions of six liquefied natural gas(LNG) and diesel semi-trailer towing vehicles(STTVs) which met China Emission Standard IV and V were tested using Portable Emission Measurement System(PEMS) in northern *** characteristics of these vehicles under real driving conditions were analyzed and proved that on-road emissions of heavy-duty vehicles(HDVs) were underestimated in the *** were large differences among LNG and diesel vehicles, which also existed between China V vehicles and China IV *** factors showed the highest level under real driving conditions, which probably be caused by frequent acceleration, deceleration, and *** emission factors ranged from 2.855 to 20.939 g/km based on distance-traveled and 6.719–90.557 g/kg based on fuel consumption during whole tests, which were much higher than previous researches on chassis *** was inferred from tests that the fuel consumption rate of the test vehicles had a strong correlation with NOx emission, and the exhaust temperature also affected the efficiency of Selected Catalytic Reduction(SCR) aftertreatment system, thus changing the NOx emission *** emission factors of LNG vehicles were 2.012–10.636 g/km, which were much higher than that of diesel vehicles(0.029–0.185 g/km).Unburned CH4 may be an important reason for this *** on-road emission tests, especially CH4 emission test should be carried out in subsequent *** addition, the Particulate Number(PN) emission factors of diesel vehicles were at a very high level during whole tests, and Diesel Particulate Filter(DPF)should be installed to reduce PN emission.

关键词： Semi-trailer towing vehicles Regulated emission PEMS

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Hexabromocyclododecane-induced Genotoxicity in Cultured Human Breast Cells through DNA Damage

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Biomedical and environmental Sciences 2017年第4期30卷 296-300页

作者： LI Rui Jing GAO Hui NA Guang Shui LU Zi Hao YAO Yao YANG Fan Key Laboratory for ecological Environment in Coastal Areas National Marine Environmental Monitoring Center Dalian 116023LiaoningChina Shanghai Ocean University Shanghai 201306China

To investigate the genotoxicity and reveal the potential toxicological mechanisms of Hexabromocyclododecane （HBCD）, human breast cells HBL-100 were exposed to a sequence of HBCD concentrations （0, 5, 10, and 50 mg/L） for 24 h. With a series of zymology and molecular biology methods, we found that HBCD induced dose-dependent oxidative stress on HBL-100 DNA. As revealed in q RT-PCR, activated prognostic factor ATM down-regulated tumor suppressor gene BRCA1 and prompted DNA repair genes h OGG1 and h MTH1 expression in lower concentrations of HBCD （〈 10 mg/L）. However, DNA repair were inhibited as well as cell proliferation rate by higher concentrations of HBCD （50 mg/L）. The results inferred that the genotoxicity of HBCD was dose-dependent and related to DNA repair pathway.

关键词： DNA HBCD Hexabromocyclododecane-induced Genotoxicity in Cultured Human Breast Cells through DNA Damage

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Element migration and enrichment characteristics of bedrock–regolith–soil–plant continuum system in the chestnut planting area,Chengde,China

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Acta Geochimica 2022年第5期41卷 839-860页

作者： Xiaofeng Wei Houyun Sun Zirang Chen Xia Li Hao Wei Wenru Jia Wei Li Sino-Zijin Resources Co.Ltd Beijing 100081China 2 School of Water Resources and EnvironmentChina University of Geosciences(beijing) Beijing 100083China beijing Institute of Geology for Mineral Resources Beijing 100012China China Institute of Geo-Environment monitoring Beijing 100081China Hebei center for ecological and environmental Geology Research Hebei GEO UniversityShijiazhuang 050031China

In order to probe the geochemical relationship between the quality of economic crops and ecological geochemistry,this project studies the chestnut production area of Chengde City,Hebei Province,*** chemical weathering index,chemical depletion fraction CDF,mass transfer coefficient,and bioconcentration coefficient were used to quantify the characteristics of element migration and accumulation in the BRSPC(Bedrock–Regolith–Soil–Plant Continuum system)system of gneiss formation area and dolomite formation *** results show that the soil CaO,SiO_(2),Al_(2)O_(3),and Na_(2)O elements in the gneiss construction area are abundant,and the B,Ge,S,and Mo elements are relatively lacking;the soil B,Mo and Ge elements in the dolomite construction area are abundant,and the SiO_(2),Al_(2)O_(3),and Na_(2)O elements are slightly lower;The weathering intensity of gneiss is low-medium,with the relatively high mobility and apparent transformation of Se,B,V,S,Mn,and *** weathering intensity of dolostone is low,with the relatively high mobility and apparent transformation of Na_(2)O,P,and *** is rich in Cu,Ni,Se,and Ge,walnut has a high content of Mo,and hawthorn is rich in Se and *** contents of Mn in chestnut are 1–2 times higher in walnut and *** lays the theoretical foundation for the industry optimization of special industrial crop planting in Chengde according to our research.

关键词： Critical zone Eco-geochemistry Element migration Chestnut Chengde

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environmental impact and health risk assessment of volatile organic compound emissions during different seasons in beijing

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Journal of environmental Sciences 2020年第7期32卷 1-12页

作者： Chuanqi Li Qianqian Li Dongge Tong Qingliang Wang Mingge Wu Bohua Sun Guijin Su Li Tan Key Laboratory of environmental Nanotechnology and Health Effects Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China State Key Laboratory of Geohazard Prevention and Geoenvironment Protection Chengdu University of TechnologyChengdu 610059China China National environmental monitoring center(CNEMC) Beijing 100012China University of Chinese Academy of Sciences Beijing 100049China

Volatile organic compounds(VOCs)are major contributors to air *** on the emission characteristics of 99 VOCs that daily measured at 10 am in winter from 15 December 2015 to 17 January 2016 and in summer from 21 July to 25 August 2016 in beijing,the environmental impact and health risk of VOC were *** the winter polluted days,the secondary organic aerosol formation potential(SOAP)of VOC(199.70±15.05 mg/m^3)was significantly higher than that on other *** aromatics were the primary contributor(98.03%)to the SOAP during the observation ***,the result of the ozone formation potential(OFP)showed that ethylene contributed the most to OFP in winter(26.00%and 27.64%on the normal and polluted days).In summer,however,acetaldehyde was the primary contributor to OFP(22.00%and 21.61%on the normal and polluted days).Simultaneously,study showed that hazard ratios and lifetime cancer risk values of acrolein,chloroform,benzene,1,2-dichloroethane,acetaldehyde and 1,3-butadiene exceeded the thresholds established by USEPA,thereby presenting a health risk to the ***,the ratio of toluene-to-benzene indicated that vehicle exhausts were the main source of VOC pollution in *** ratio of m-/p-xylene-toethylbenzene demonstrated that there were more prominent atmospheric photochemical reactions in summer than that in ***,according to the potential source contribution function(PSCF)results,compared with local pollution sources,the spread of pollution from long-distance VOCs had a greater impact on beijing.

关键词： Volatile organic compounds(VOCs) Secondary organic aerosol formation potential(SOAP) Ozone formation potential(OFP) Risk assessment Potential source contribution function(PSCF)

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Leaching behavior of enrofloxacin in three different soils and the influence of a surfactant on its mobility

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Journal of environmental Sciences 2012年第3期24卷 435-439页

作者： Zhiyong Yu Ayfer Yediler Min Yang Sigurd Schulte-Hostede State Key Laboratory of environmental Aquatic Chemistry Research Center for Eco-Environmental SciencesChinese Academy of Sciences Beijing 100085China Helmholtz Zentrum Muenchen German Research Center for Environmental HealthInstitute of Ecological Chemistrylngolstaedter Landstrasse.185764 NeuherbergGermany

The leaching behaviors of enrofloxacin （ENR）, a fluoroquinolone group antibiotic, in three different standard soils, namely sandy, loamy sand and sandy loam were investigated according to OECD guideline 312. In addition, the effects of tenside, sodium dodecylbenzenesulfonate （DBS） on the mobility of ENR in two different soils were studied. The mobility of ENR in all three standard soils was very similar and was mostly （98%） concentrated on the top 0-5 cm segment of the soils at pH 5.7. The DBS can enhance the mobility of ENR in soils but the impact was in general negligible under the studied conditions.

关键词： enrofloxacin leaching soil sodium dodecylbenzenesulfonate

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Occurrence and bioaccumulation of polybrominated diphenyl ethers in sediments and paddy ecosystems of Liaohe River Basin, northeast China

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Journal of environmental Sciences 2016年第5期28卷 250-256页

作者： Xindong Ma Haijun Zhang Wenjun Yao Wen Guo Depeng Li Ziwei Yao Jiping Chen State Oceanic Administration Key Laboratory for ecological Environment in Coastal Areas National Marine Environmental Monitoring Center Dalian Institute of Chemical Physics Chinese Academy of Sciences School of Chemistry Engineering & Light Industry Dalian Polytechnic University

Concentrations of 16 polybrominated diphenyl ether（PBDE） congeners were measured in river sediments, paddy soils and three species of paddy-field organisms（crab, loach and carp） collected from the Liaohe River Basin, northeastern China. The total contents of PBDEs（∑_（16）PBDEs） in sediments and paddy soils were in the ranges of 273.4–3246.3 pg/g dry weight（dw）, and 192.1–1783.8 pg/g dw, respectively. BDE 209 was the dominant congener both in sediments and paddy soils. The concentrations of ∑_（16）PBDEs in sediments were significantly higher than those in the adjacent paddy soils, indicating a potential transport of PBDEs from river to paddy ecosystems via river water irrigation. The biota–soil accumulation factor（BSAF） was calculated as the ratio between the lipid-normalized concentration in paddyfield organisms and the total organic carbon-normalized concentration in paddy soil. The average BSAF values of ∑15PBDEs followed the sequence of crab（3.6）〉 loach（3.3）〉 carp（2.1）. BDE 154 had the highest BSAF value, and a parabolic trend between BSAF values of individual PBDE congeners and their log KOWvalues was observed. In view of the fact that crab had the larger BSAF value and higher lipid content, the ecological risk and health risk for crab cultivation in paddy fields should be of particular concern.

关键词： Polybrominated diphenyl ethers Bioaccumulation Sediment Paddy field Liaohe River Basin

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Tests to evaluate the ecological impact of treated ballast water on three Chinese marine species

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Chinese Journal of Oceanology and Limnology 2014年第5期32卷 1105-1117页

作者：张亚楠王子羲蔡磊明蔡翔孙文俊马立青 environmental Engineering Institute Dalian Maritime University Department of Mechanical Engineering Tsinghua University ecological monitoring Training and Research Center Zhejiang Academy of Agricultural Sciences (ZAAS) Shanghai Academy of environmental Sciences Department of Chemical and Biochemical Engineering Western University

Ballast water has been a topic of concern for some time because of its potential to introduce invasive species to new habitats. To comply with the International Convention for the Control and Management of Ships' Ballast Water and Sediments, members of the International Maritime Organization(IMO) must equip their ships with on-board treatment systems to eliminate organism release with ballast water. There are many challenges associated with the implementation of this IMO guideline, one of which is the selection of species for testing the ecological impacts of the treated ballast water. In the United States, ballast water toxicity test methods have been defined by the United States environmental Protection Agency. However, the test methods had not been finalized in China until the toxicity test methods for ballast water were established in 2008. The Chinese methods have been based on species from three trophic levels: Skeletonema costatum, Neomysis awatschensis, and Ctenogobius gymnauchen. All three species live in broad estuarine and open sea areas of China; they are sensitive to reference toxicants and acclimatize easily to different conditions. In this paper, the biological characteristics, test processes and statistical analysis methods are presented for the three species. Results indicate that the methods for evaluating these three organisms can be included in the ecological toxicity tests for treated ballast water in China.

关键词： treated ballast water ecological impact marine species toxicity test methods

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