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Rapid decolorization of water soluble azo-dyes by nanosized zero-valent iron immobilized on the exchange resin

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Science China Chemistry 2008年第2期51卷 186-192页

作者： ZHAO ZongShan LIU JingFu TAI Chao ZHOU QunFang HU JingTian jiang guibin Key Laboratory of Environmental Chemistry and Ecotoxicology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China Department of Chemistry Shandong UniversityJinan 250100China

Nanosized zero-valent iron (NZVI) supported on the cation exchange resin was synthesized and applied to decompose some water soluble azo dyes. The decomposition efficiency for azo dyes was evaluated by using the aqueous suspensions and parked column of this material. Batch experiments indicated that this novel material exhibited excellent degradation ability for 0.05 g·L1 of Acid Orange 7, Acid Orange 8, Acid Orange 10, Sunset Yellow, and Methyl Orange, with decolorization ratio up to 95% in 4 min; pH value was the key factor for degradation and H+ was one of the reactants; adsorption of azo dyes onto the material existed at the beginning but reduced gradually until disappearing completely. For the packed column system, 58%~90% of azo dyes were decomposed in the 1st circle of solution passing through the column, and the adsorption onto the materials could accelerate the degradation azo dyes with the increasing reaction time. During the degradation process, Fe2+, the product of NZVI, was exchanged to the resin again and could be reduced to Fe0 by KBH4 for reusing. The 10th refreshed NZVI possessed reductive activity up to 90% of the newly systhesized NZVI. Decomposing pollutants in the aqueous solution with columns packed with NZVI immobilized on the cation exchange resin is a promising technology that can solve the reclaiming and refreshing problem of NZVI.

关键词： azo-dye nanosized-zero valent iron (NZVI) decomposition packing column

Concentrations and source identification of organochlorine pesticides (OCPs) in soils from Wolong Natural Reserve

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Chinese Science Bulletin 2009年第5期54卷 743-751页

作者： ZHENG XiaoYan LIU XianDe LIU WenJie jiang guibin YANG RuiQiang State Key Laboratory of Environmental Chemistry and Ecotoxicology Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beijing 100085 China Chinese Research Academy of Environmental Sciences Beijing 100012 China

In order to understand the distribution profile, composition characteristics and sources of OCPs, soil samples collected from Wolong Natural Reserve (WNR) in spring and autumn in 2005 were analyzed using gas chromatography coupled with electron capture detector (GC-ECD). Results showed that all OCPs concentrations were in the range of 10?2 ng/g―10?1 ng/g, representing the background level in those remote sites. Generally, their concentrations were slightly higher in spring than in autumn, which could be explained by OCPs: 1) may be released to soil from snow-melting water in spring; 2) partially evaporate into air from soil due to high temperature and intense radiation in summer and 3) can be relatively high degradation rate in summer. There were notable differences of OCPs seasonal variations between samples from alpine meadow and those from under-treeline. This phenomenon was related to physical-chemical properties of OCPs and vegetation coverage. For alpine meadow soils, levels of OCPs were increased with increasing altitudinal gradient, which was associated with enhanced scav-enging efficiency of wet precipitation. Composition characteristics of OCPs in soils were similar to those of air samples, which was distinct from those of typical contaminated soils, indicating that OCPs in WNR soils were mainly from atmospheric transport.

关键词：有机氯杀虫剂土壤污染组成特性季节性变化来源鉴定

Progress in the toxicological researches for quantum dots

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Science China Chemistry 2008年第5期51卷 393-400页

作者： LI HongCheng ZHOU QunFang LIU Wei YAN Bing ZHAO Yibing jiang guibin State Key Laboratory of Environmental Chemistry and Ecotoxicology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China School of Pharmaceutical Sciences Shandong UniversityJinan 250012China College of Chemistry and Chemical Engineering Xiamen UniversityXiamen 361005China

Quantum dots (QDs) have received more and more attention as a novel example of nanomaterials. Due to their unique fluorescent characteristics,quantum dots have been successfully applied in biotech-nology and medicine applications. Recently,the toxicity and the potential environmental effects of QDs have become a research hotspot. In this paper,toxicological effects of QDs are reviewed,and the prospects and research directions are given based on the analysis of this research field.

关键词： quantum dot toxicology nanomaterial

Metallomics in environmental and health related research:Current status and perspectives

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Chinese Science Bulletin 2013年第2期58卷 169-176页

作者： HU LiGang HE Bin WANG YuChuan jiang guibin SUN HongZhe Department of Chemistry the University of Hong Kong State Key Laboratory of Environmental Chemistry and Ecotoxicology Research Center for Eco-Environmental SciencesChinese Academy of Sciences

Metals and metalloids play distinct roles in human health,either beneficial or toxic,depending on their concentrations and species.There is an increasing interest in metals uptake,trafficking,function,and exertion in microorganisms to maintain and advance human health.Metallomics,an emerging research area,focuses on elucidation of metals/metalloids location,distribution,speciation,and behavior in living organisms.This paper briefly summarized the recent progress on the methodology development of metallomics including various techniques,i.***.multiple dimensional liquid chromatography-inductively coupled plasma mass spectrometry(LC-ICPMS),gel electrophoresis-laser ablation-inductively coupled plasma mass spectrometry(GE-LA-ICPMS),synchrotron X-ray fluorescent spectroscopy(XFS),and the applications of metallomics in environmental and health care.

关键词：金属非金属人类健康电感耦合等离子体质谱法环境 X射线荧光光谱法展望多维液相色谱凝胶电泳

SEPARATION AND DETECTION OF VOLATILE ARSENIC SPECIES BY COTTON COLUMN AND ATOMIC FLUORESCENCE SPECTROMETER

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SEPARATION AND DETECTION OF VOLATILE ARSENIC SPECIES BY COTT...

Concentrations,profiles and gas-particle partitioning of PCDD/Fs,PCBs and PBDEs in the ambient air of an E-waste dismantling area,southeast China

第十三届北京分析测试学术报告会暨展览会(BCEIA2...

作者： Chun-Gang YUAN Kegang ZHANG Zhenhua WANG guibin jiang School of Environmental Science & Engineering North China Electric Power University State Key Laboratory of Environmental Chemistry and Ecotoxicology Research Center for Eco-Environmental SciencesChinese Academy of Sciences

＜正＞Arsenic is introduced primarily from geochemical sources and is acted on biologically,creating an arsenic biogeocycle.During the biogeocycling process,microbial activities play important roles in the biogeochemical cycling and the speciation of arsenic.An interesting mechanism（or evidence）of bacterial resistance to（and detoxification of）arsenic is through the release of volatile

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Chinese Science Bulletin 2008年第4期53卷 521-528页

作者： LI YingMing jiang guibin WANG YaWei WANG Pu ZHANG QingHua State Key Laboratory of Environmental Chemistry and Ecotoxicology Research Center for Eco-Environmental Sciences ChineseAcademy of Sciences Beijing 100085 China

Polychlorinated diebenzo-p-dioxins(PCDDs),polychlorinated diebenzofurans(PCDFs),polychlorinated biphenyls(PCBs) and polybrominated diphenyl ethers(PBDEs) were monitored in the ambient air of Taizhou,an E-waste dismantling area of southeast China to evaluate their concentrations,profiles and gas-particle partitioning.The ΣPCDD/Fs concentrations ranged from 2.91 to 50.6 pg/m3,with an average of 14.3 pg/m3.The I-TEQs for PCDD/Fs were in the range of 0.20-3.45 pg/m3,with an average of 1.10 pg/m3.The ΣPCBs concentrations and TEQs ranged from 4.23 to 11.35 ng/m3,0.050 to 0.859 pg(TEQ)/m3,respectively.The concentrations of ΣPBDEs ranged from 92 to 3086 pg/m3,with an average of 894 pg/m3.The pollution levels of PCDD/Fs,PCBs and PBDEs were higher than other urban sites,which may be associated with the E-waste dismantling activities.The PCDD/Fs were found exclusively in the particle phase whereas PCBs distributed dominantly in the gas phase.The gas-partilce partitioning was also assessed by correlating the gas-particle partition coefficient(Kp) with the subcooled liquid vapor pressure(PL0).The measured particulate sorptions of PCDD/Fs,PCBs and PBDEs were compared with the predictions from Junge-Pankow model and Koa absorption model.The Junge-Pankow model well estimated the particulate fractions of PCBs.However,it underestimated the sorptions of PCDD/Fs and overestimated the fractions of PBDEs.The predicted particulate fractions of PCDD/Fs and PCBs from Koa model fitted well with the measured data.

关键词：中国东南部空气污染污染物多溴化二苯醚全氟辛烷磺酸

Vitellogenic responses of male Chinese loach (Misgurnus anguillicaudatus) exposed to the individual or binary mixtures of 17β-estradiol and nonylphenol

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Chinese Science Bulletin 2007年第24期52卷 3333-3338页

作者： LU XueFei ZHOU QunFang SONG MaoYong jiang guibin SHAO Jing State Key Laboratory of Environmental Chemistry and Ecotoxicology Research Center for Eco-Environmental Sciences Beijing100085 China

Male Chinese loaches were exposed to 17β-estradiol (E2) and nonylphenol (NP) both singly and in combination for 42 days using semi-static waterborne exposure system. Plasma vitellogenin (Vtg) was chosen as determining endpoint. The results demonstrated that 0.5 μg/L E2 could induce the enhancement of Vtg contents in male Chinese loaches after exposure for 21 days, which showed a time-related increasing manner; NP was also estrogenic to male Chinese loach, and the vitellogenic responses showed in a time-and dose-related manner, which was less potent than that of E2. The bi- nary mixtures of E2 and NP can significantly elicit the production of Vtg in male Chinese loaches, which was more potent than that of individual compounds, and Vtg induced in the binary mixture groups was higher than the summation of Vtg induced in the corresponding single-compound groups at the same concentration.

关键词：化学相互作用内分泌 17β-雌二醇卵黄蛋白原

ARSENIC IN CHINESE HERB MEDICINES: A NEW PERSPECTIVE OF SAFETY EVALUATION

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ARSENIC IN CHINESE HERB MEDICINES: A NEW PERSPECTIVE OF SAFE...

Environmental and biological influences on the stability of silver nanoparticles

第十二届北京分析测试学术报告会暨展览会(BCEIA2...

作者： Chun-Gang YUAN Erle GAO Yu ZHANG Bin HE guibin jiang State Key Laboratory of Environmental Chemistry and Ecotoxicology Research Center for Eco-Environmental Sciences Chinese Academy of Sciences School of Environmental Science & Engineering North ChinaElectric Power University Wangjing Hospital Chinese Academy of Traditional Medicine

＜正＞Chinese traditional medicine（CTM）played a very important role during Severe Acute Respiratory Syndrome（SARS）outbreak in summer 2003 in China[1].By using the combination of ancient Chinese herb remedies and w...

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Chinese Science Bulletin 2011年第19期56卷 2009-2015页

作者： LIU Wei ZHOU QunFang LIU JiYan FU JianJie LIU SiJin jiang guibin State Key Laboratory of Environmental Chemistry and Ecotoxicology Research Center for Eco-environmental Sciences Chinese Academy ofSciences Beijing 100085 China

Silver nanoparticles (Ag NPs) are easily dispersed and stable, and their application has become widespread. Consequently, concern has arisen regarding their potential effects on the environment and human health. However, the current understanding on the stability of Ag NPs is limited. Therefore, in this study the influence of environmental and biological factors, such as ionic strength, valence, biological molecules, pH and temperature, on the properties of Ag NPs was investigated. The absorption spectra, size, zeta potential, and release of silver ions were evaluated. Ionic strength, valence, Dulbecco’s Modified Eagle’s Medium (DMEM), without fetal bovine serum (FBS), reduced the stability of the Ag NPs. However, in DMEM with 10% FBS, the Ag NPs maintained their stability and nanoscale characteristics. These findings provide an essential insight into the environmental and biological factors that should be evaluated in a risk assessment of Ag NPs.

关键词：银纳米粒子生物因素稳定性环境 Zeta电位离子强度胎牛血清 DMEM