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The associations between the {2. exposure to polychlorinated biphenyls (PCBs) and breast cancer risk and progression

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Science china.chemistry 2010年第5期53卷 974-979页

作者： liu SiJin ,ZHANG ShuPing,QU Chen,liu Wei & DU YuGuo state key laboratory of environmental chemistry and ecotoxicology Research center for eco-environmental {12.,chinese academy of sciences,beijing 100085,china 1. state key {2. of environmental chemistry and ecotoxicology Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beijing 100085 China

Polychlorinated biphenyls(PCBs) are chlorinated biphenyl compounds with wide applications in the *** spite of a ban on their production in the late 1970s,PCBs,as a group of POPs,are still persistent and widely spread in the environment,posing potential threats to human *** role of PCBs as etiologic agents for breast cancer has been intensively explored in a variety of in vivo,animal and epidemiologic *** investigations indicated higher levels of PCBs in mammary tissues or sera corresponded to the occurrence of breast cancer,but later studies showed no positive association between PCB exposure and breast cancer *** recent data suggested that the CYP1A1 m2.polymorphisms might add increased risk to the etiology of breast cancer in women with environmental exposure to *** are implicated in advancing breast cancer progression,and our unpublished data reveals that PCBs activate the ROCK signaling to enhance breast cancer ***,the correlation between PCB exposure and breast cancer risk warrants further careful investigations.

关键词： Polychlorinated biphenyls (PCBs) environmental exposure CYP1A1 polymorphisms breast cancer risk tumor progression

Highly sensitive and selective chemosensor for Cu～(2.) detection based on a N-propargyl rhodamine 6G-hydrazide derivative

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Science china.chemistry 2012年第4期55卷 626-631页

作者： ma Xing1,2.liu Jun1,DU YuGuo1,2.WEI GuoHua1 & WEI DongBin1 1{2. key laboratory of environmental chemistry and ecotoxicology Research center for eco-environmental sciences,{12.,beijing 100085,china.2.ollege of chemistry and Chemical Engineering,Graduate University of {12.,beijing 100049,china 1. state key {2. of environmental chemistry and ecotoxicology Research center for eco-{2. sciences Chinese Academy of Sciences Beijing 100085 China2. College of Chemistry and Chemical Engineering Graduate University of Chinese Academy of Sciences Beijing 100049 China

A novel fluorescence ＂turnon＂ probe for CH^2. detection has been designed based on a Cu^2. triggered spirolactam ringopening reaction. The synthetic probe is a doubleresponsive fluorescent and colorimetric Cu^2.specific sensor. In aqueous solution, it exhibits high selectivity and excellent sensitivity. With a significant color change visible to the naked eye at the concentration of 3 *** （ca. 0.19 mg/L）, about one magnitude lower than the WHO （World health Organization） recommended level （2.0 mg/L） for Cu^2.ions in drinking water, the probe could be used to monitor Cu^2. ions in drinking water.

关键词： copper – fluorescent chemosensor – chromogenic probe – rhodamine

health risks and sources of trace elements and black carbon in PM_(2.5)from 2.19 to 2.2. in beijing

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Journal of environmental sciences 2024年第8期142卷 69-82页

作者： Chenjie Hua Wei ma Feixue Zheng Yusheng Zhang Jiali Xie Li ma Boying Song Chao Yan hongyan Li Zhen liu Qian liu markku Kulmala yongchun liu Aerosol and Haze laboratory Advanced Innovation Center for Soft Matter Science and EngineeringBeijing University of Chemical TechnologyBeijing 100029China Institute for Atmospheric and Earth System Research Faculty of ScienceUniversity of HelsinkiHelsinki 00014Finland School of Environment and Safety Taiyuan University of Science and TechnologyTaiyuan 030024China state key {2. of environmental chemistry and ecotoxicology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China

A comprehensive health risk assessment of PM_(2.5)is meaningful to understand the current status and directions regarding further improving air quality from the perspective of human *** this study,we evaluated the health risks of PM_(2.5)as well as highly toxic inorganic components,including heavy metals(HMs)and black carbon(BC)based on longterm observations in beijing from 2.19 to *** results showed that the relative risks of chronic obstructive pulmonary disease,lung cancer,acute lower respiratory tract infection,ischemic heart disease,and stroke decreased by 4.07%-9.30%in 2.2. and 2.12.-6.70%in2.2. compared with ***,they were still at high levels ranging from 1.2. to 1.77,in particular,stroke showed the highest value in *** had the highest hazard quotient(HQ,from 2.18 to 2.56)for adults from 2.19 to 2.2.,while Ni,Cr,Pb,As,and BC showed high carcinogenic risks(CR>1.0×10^(-6))for *** HQ values of Mn and As and the CR values of Pb and As showed constant or slight upwards trends during our observations,which is in contrast to the downward trends of other HMs and PM_(2.5).Mn,Cr,and BC are crucial toxicants in PM_(2.5).A significant shrink of southern region sourcesof HMs and BCshrank suggests the increased importance of local ***,dust,and biomass burning are the major contributors to the non-carcinogenic risks,while traffic emissions and industry are the dominant contributors to the carcinogenic risks in beijing.

关键词： PM_(2.5) heavy metals Black carbon health risk Source apportionment

Subchronic toxicological effects of aquatic nitrobenzene on Medaka and chinese rare minnow

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Science china.chemistry 2007年第5期50卷 707-717页

作者： ZHOU QunFang1, FU JianJie1,2. MENG HaiZhen1,2. ZHU XueYan1,2. JIANG GuiBin1, ZHANG JianBin1, liu JieMin2.& SHI GuoQing2.1 {2. key laboratory of environmental chemistry and ecotoxicology, Research center for eco-environmental sciences, {12., beijing 100085, china.2.Department of chemistry, School of Applied Science, University of Science and Technology beijing, beijing 100083, china state key {2. of environmental chemistry and ecotoxicology ResearchCenter for Eco-environmental SciencesChinese Academy of SciencesBeijing 100085China Department ofchemistry School of Applied ScienceUniversity of Science and Technology B

Based on the simulative exposure experiments of nitrobenzene to two small experimental fishes, Medaka (Oryzias latipes) and chinese Rare Minnow (Gobiocypris rarus), it was found that nitrobenzene could decrease in a linear way in the static aquatic system. Both fishes could accumulate dose-related levels of nitrobenzene quickly and eliminate the compound rapidly when they were transferred to clean water. The chinese rare minnow showed more sensitivity to the acute toxicity exposure of nitrobenzene than Medaka. Typical molecular biomarkers in oxidative defense system including superoxide dismu- tase (SOD), catalase (CAT) showed the chemical induced alterations. The changes of acetylcholi- nesterase (AChe) activities indicated that nitrobenzene might affect the normal neural function. Nitro- benzene exposure could also lead to obvious damaging effects on the target organs, such as gill and liver by hitopathological studies.

关键词： nitrobenzene, Medaka, chinese rare minnow, bioaccumulation, elimination, molecular biomarkers, histopathological effects

Use of cloud point extraction for removal of nanosized copper oxide from wastewater

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Science Bulletin 2010年第Z1期 346-349页

作者： liu JingFu, SUN Jia & JIANG GuiBin state {2. laboratory of environmental chemistry and ecotoxicology, Research center for eco-environmental sciences, chinese academy of sciences, {12., china

Triton X-114 based cloud point extraction has been demonstrated to be an advantageous approach for the recovery of nanosized copper oxide (NCO) from water. The removal of NCO was influenced by the concentrations of TX-114 and salt, incubation temperature and time, as well as solution pH. With the addition of 0.3% (w/v) Triton X-114, over 88% of the spiked NCO was removed from wastewater after incubation at 35°C for 2.h and centrifugation, whereas over 85% of NCO was recovered after incubation at 2.°C for 2. h by gravity phase separation, which is economical and energy-saving. This study suggests that the cloud point extraction technique has great potential in removal of nanomaterials from wastewater.

关键词： cloud point extraction copper oxide nanomaterial Triton X-114 wastewater

水热老化对不同方法制备的Fe-ZSM-5用于NH_3选择性催化还原NO_x的影响

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催化学报 2012年第3期33卷 454-464页

作者：石晓燕刘福东单文坡贺泓中国科学院生态环境研究中心环境化学与生态毒理学国家重点实验室北京100085

采用液体离子交换、等体积浸渍和固相离子交换制备了一系列Fe-ZSM-5催化剂,并将其用于NH3选择性催化还原NOx(NH3-SCR)反应.运用X射线衍射、紫外-可见漫反射吸收光谱和原位漫反射傅里叶变换红外光谱对催化剂进行了表征.结果表明,Fe-ZSM-... 详细信息

采用液体离子交换、等体积浸渍和固相离子交换制备了一系列Fe-ZSM-5催化剂,并将其用于NH3选择性催化还原NOx(NH3-SCR)反应.运用X射线衍射、紫外-可见漫反射吸收光谱和原位漫反射傅里叶变换红外光谱对催化剂进行了表征.结果表明,Fe-ZSM-5催化剂表面Fe物种可分为孤立Fe3+物种、低聚Fe氧化物团簇和Fe2.3,各催化剂上NH3-SCR反应活性不同的根本原因是其表面Fe物种分布不同.水热老化后,Fe-ZSM-5催化剂上400oC以下反应时NOx转化率降低,而高温活性略有提高,各催化剂活性差异减小;同时NH3氧化活性和NO氧化活性均明显降低.这可归因于水热老化使Fe-ZSM-5催化剂表面的孤立Fe3+物种相对浓度降低,低聚Fe氧化物团簇和Fe2.3相对浓度增加,以及催化剂表面Br?nsted酸性位显著减少所致.

关键词：氮氧化物选择性催化还原铁 ZSM-5分子筛氨水热老化

Determination of Silicate in Mineral Waters by Non Suppressed Ion Chromatography

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Determination of Silicate in Mineral Waters by Non Suppresse...

Mechanism of Cytotoxicity of Tetrachloro-1,4-benzoquinone and its Hydrolysis Products in the hepG2.Cells

The 2.d china.Japan-Korea Joint Symposium on Ion Chro{2.tography

作者： liu Xiao liu Jings{2.ng CAI Yaqi MOU Shifen (state key laboratory of environmental chemistry and ecotoxicology Research center for eco-environmental Science {12. beijing 100085 china.

＜正＞The present paper introduced a method in which injected samples directly followed by separating analytes by ion chromatography and detecting silicate in mineral waters by non suppressed conductivity detector. The separation of silicate was obtained by IonPac AS11-HC column which is a hydroxyl selectivity column and KOH gradient eluent obtained by Eluent Generator was selected. The samples are injected directly without any pretreatment. This method possesses of the advantages good selectivity, distinguished flexibility, easily operation and time-saving.

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Mechanism of Cytotoxicity of Tetrachloro-1,4-benzoquinone an...

Determination of Anions, Cations and Organic Acids in Human Nourishment Solutions by Ion Chromatography

第六届全国环境化学大会暨环境科学仪器与分析仪器展览会

作者： Yu-Xiang liu,Ben-Zhan Zhu~* (state {2. laboratory of environmental chemistry and ecotoxicology,Research center for eco-environmental sciences,chinese {12. of Science,beijing 10085)

＜正＞Tetrachloro-1,4-benzouquione（TCBQ;po-chloranil） has been implicated with the genotoxic effects associated with the wood preservative pentachlorophenol（PCP）.We found recently that hydroxamuic acids could protect against the cytotoxicity of TCBQ, possibly by enhancing its hydrolysis to form the final product 2.5- dichloro-3,6-dihydroxy -1,4-benzuoquinone（DDBQ, chloranilic acid）,through a transient intermediate trichlorohydroxy- 1,4-

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Determination of Anions, Cations and Organic Acids in Human ...