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chinese Science Bulletin 2006年第14期51卷 1736-1740页

作者： song zhiguang1,2.& wang cuiping1,31. {2. key laboratory of organic geochemistry, guangzhou institute of geochemistry, chinese academy of sciences, guangzhou 510640, china 2. guangzhou Research Center of Gas Hydrate, chinese academy of sciences, guangzhou 510640, china 3. Graduate School of chinese academy of sciences, Beijing 100039, china state key {2. of organic geochemistry Guangzhou Institute of Geochemistry Chinese Academy of Sciences Guangzhou 510640 China guangzhou Research Center of Gas Hydrate Chinese Academy of Sciences Guangzhou 510640 China Graduate School of chinese academy of sciences Beijing 100039 China

A group of 2.6,10,15,19-pentamethyli- cosenes (PMIΔ) containing 1―5 unsaturated double bonds has been identified in the sea floor sediments from the Gulf of Mexico at the Green Canyon 2.8 *** PMIΔ compounds are distributed between nC2. and nC2. on the mass chromatogram of aliphatic fraction. Their δ 13C values are very much depleted in 13C and in the range of ?86.7‰ to ?115.5‰, whereas the δ 13C values of companion n-alkanes range from ?2..4‰ to ?34.6‰. These unsaturated PMIΔ com-pounds are typical biomarkers derived from the an-aerobic oxidation of methane mediated by meth-ane-oxidizing archaeal bacteria and indicative of the gas seeps or even the occurrence of gas hydrates in the deep sea sediments.

关键词：生物标志墨西哥湾沉积物 PMIA 天然气水化物

Nitric Oxide Emission Following Wetting of Dry Soils in Subtropical Humid Forests

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Pedosphere 2009年第6期19卷 692-699页

作者： LI De-Jun and wang Xin-Ming 2.state {2. laboratory of organic geochemistry, guangzhou institute of geochemistry, chinese academy of sciences, guangzhou 510640 (china) state key {2. of organic geochemistry Guangzhou Institute of Geochemistry Chinese Academy of Sciences Guangzhou 510640 (China)

Information about soil nitric oxide （NO） emissions from subtropical forests is quite limited, and even less is known about the pulse emission of NO when wetting soils after a long period of dryness. In this study, we measured NO fluxes following wetting of dry soft in a broadleaf forest and a pine forest in subtropical china. Large pulses of NO fluxes were observed after soil wetting in both forests. NO fluxes increased significantly within 0.5 h following wetting in both forests and reached peak 1 and 4 h after soil wetting in the pine forest and the broadleaf forest, respectively. In the broadleaf forest, averaged peak flux of NO pulses was 157 ng N m^-2.s^-1, which was 8 times the flux value before wetting, and in the pine forest, the averaged peak flux was 135 ng N m-2.s 1, which was 15.5 times the flux value before wetting. The total pulses-induced NO emissions during the dry season were roughly estimated to be 2..4 mg N m^-2.in the broadleaf forest and 2..2.mg N m^-2.in the pine forest or made up a proportion of 4.6% of the annual NO emission in the broadleaf forest and 5.3% in the pine forest.

关键词： dry season flux. NO. pulse subtropical china

Identification of marine natural gases with different origin sources

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Science china Earth sciences 2008年第S1期51卷 148-164页

作者： wang YunPeng 1 ,ZHAO ChangYi 2.,wang ZhaoYun 2.,wang HongJun 2.,TIAN Jin 1 ,ZOU YanRong 1 &LIU JinZhong1 1state key laboratory of organic geochemistry,guangzhou institute of geochemistry,chinese {12. of sciences,guangzhou 510640,china 2.9} of Geology,Research institute of Petroleum Exploration and Development,Petrochina,Beijing 100083,china institute of Geology Research Institute of Petroleum Exploration and Development

Kinetic experiments of gas generation for typical samples of marine gas precursors including low-maturity kerogen,residual kerogen and oil as well as dispersed liquid hydrocarbon(DLH)in source rocks were performed by closed system,and the evolution trends of molecular and isotopic compositions of natural gases from different precursors against the maturity(R0%)at laboratory conditions were *** diagrams of gas origin were calibrated by using the experimental data.A diagram based on the ratio of normal and isomerous butane and pentane(i/nC4-i/nC5)was proposed and used to identify the origins of the typical marine natural gases in the Sichuan Basin and the Tarim Basin, *** the maturities of natural gases were estimated by using the statistical relationships between the gaseous molecular carbon isotopic data and maturities(δ13C-R 0 %)with different *** results indicate that the molecular and isotopic compositions of simulated gases from different precursors are different from each *** example,the dryness index of the oil-cracking gas is the lowest;the dryness indices of gases from DLH and kerogen in closed system are almost the same;and the dryness index of gases from residual kerogen is extremely high,indicating that the kerogen gases are very dry;the contents of non-hydrocarbon gases in kerogen-cracking gases are far higher than those in oil-cracking and DLH-cracking *** molecular carbon isotopes of oil-cracking gases are the lightest,those of kerogen in closed system and GLH-cracking gases are the second lightest,and those of cracking gases from residual kerogen are the *** calibration results indicate that the diagrams of ln(C1/C2.-ln(C2.C3)andδ13C2.δ13C3-ln(C2.C3)can discriminate primary and secondary cracking gases,but cannot be used to identify gas origin sources,while the diagram of i/nC4-i/nC5 can differentiate the gases from different *** application results of these diagrams show that gas mixtures ext

关键词： marine organic matter gas origin sources kerogen oil-cracking gas origin identification carbon isotope

Experiment of the ^(40)Ar/^(39)Ar dating of diagenetic illite in gas reservoirs

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chinese Science Bulletin 2004年第S1期49卷 89-93页

作者： wang Longzhang, DAI Tongmo & PENG Ping’an state {2. laboratory of organic geochemistry, guangzhou institute of geochemistry, CAS, guangzhou 510640, china Faculty of Resources, chinese University of Geosciences, Wuhan 430074, china state key {2. of organic geochemistry Guangzhou Institute of Geochemistry CAS Guangzhou 510640 China

40Ar/39Ar dating of diagenetic illite has been performed to investigate gas reservoirs in the Sulige Gas Field of the northern Ordos Basin. A series of technical challenges were confronted, including illite purification, Ar recoil loss, and separation of diagenetic illite from detrital illite. Mineral growth ages for diagenetic illite were obtained by this experiment, from which the age of gas emplacement was deduced to be later than 169 Ma.

关键词： 40Ar/39Ar dating diagenetic illite purification of clay minerals Ar recoil loss time of gas emplacement.

2./3D-QSAR comparative study on mutagenicity of nitroaromatics

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Science china Chemistry 2005年第3期48卷 246-252页

作者： wang Xiaodong1, LIN Zhifen2. YIN Daqiang1, LIU Shushen1 & wang Liansheng1 1. {2. key laboratory of Pollution Control and Resources Reuse, School of the Environment at Nanjing University, Nanjing 2.0093, china 2. key laboratory of Tropical Marine Environmental Dynamics, South china Sea institute of Oceanology, chinese academy of sciences, guangzhou 510301,{12. state key {2. of Pollution Control and Resources Reuse School of the Environment at Nanjing University Nanjing China key laboratory of Tropical Marine Environmental Dynamics South China Sea Institute of Oceanology Chinese Academy of Sciences Guangzhou China

Nitroaromatics are typical toxic organic pollutants and are ubiquitous in environment with diverse structures. They are widely used in many industries and formed during many natural and anthropogenic processes. Most of these pollutants are potentially carcinogenic and the as-sessment and prediction of the mutagenicity of nitroaromatics are of great interest. In this paper the structure-mutagenicity relationships of 2.9 nitroaromatics are investigated by molecular or-bital theory based classic structure-activity relationships and comparative molecular field analysis (CoMFA). A comparison is undertaken in respect of the interpretation of mechanism and predic-tive ability for these two categories of QSAR approaches and highly predictive QSAR models have been developed.

关键词： nitroaromatics, mutagenicity, mechanism, 3D-QSAR, CoMFA.

Pool-formation and secondary change of biodegraded viscous oils:Case study of reservoir section in the Zhengjiawangzhuang Oilfield, Jiyang Depression

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chinese Science Bulletin 2004年第S1期49卷 39-49页

作者： wang Zhenqi, PENG Ping’an, YU Chiling, LU Hong, ZOU Yanrong, ZHANG Linye & LIU Junmin state {2. laboratory of organic geochemistry, guangzhou institute of geochemistry, chinese academy of sciences, guangzhou 510640, china Department of Earth Science, Yangtze University, Jingzhou 43402., china Research institute of Geology, Shengli Oilfield Co. Ltd., SINOPEC, Dongying 2.7015, china state key {2. of organic geochemistry Guangzhou Institute of Geochemistry Chinese Academy of Sciences Guangzhou 510640 China

It is demonstrated by various geochemical indexes that the Zhengjia-wangzhuang Oilfield with viscous crude oil in the Jiyang Depression has been sourced from the contribution of matured source rocks in the upper Es4. The principal cause leading to the densification of crude oils would be biodegradation, with the degradation level of crude oils being ranked as 2.8; vertically, the biodegradation level increases from the top to bottom of the oil column, with a distinctive biodegradation gradient occurring. Calculated parameters of sterane, terpane and methyl-phenanthrene have indicated that the source-rock’s maturity of crude oils and asphaltic sands ranges from 0.7 to 0.9, and based on the calculation of Easy Ro model, the temperature of hydrocarbon generation in the source rock would be within 12.-140℃, which coincides with the measurements of reservoir inclusions. The measured homogenization temperature would represent the generation temperature of the source rock, and be fairly different from that

关键词： viscous oil biodegradation time of pool-formation time of degradation Jiyang Depression.

Geochemical characteristics and applications of 18α(H)-neohopanes and 17α(H)-diahopanes

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chinese Science Bulletin 2000年第19期45卷 1742-1748页

作者： wang Chunjiang, FU Jiamo, SHENG Guoying, XIAO Qianhua, LI Jinyou, ZHANG Yali & PIAO Mingzhi1. Slate key {2. of organic geochemistry, guangzhou institute of geochemistry, chinese academy of sciences. Guang/hou 510640, china 2. Department of Geosciences, Petroleum University, Beijing 102.00, china 3. institute of Petroleum Exploration and Exploitation, Liaohe Bureau of Petroleum Exploration, Panjin 2.0000, china state key {2. of organic geochemistry Guangzhou Institute of Geochemistry Chinese Academy of Sciences Guangzhou China Department of Geosciences Petroleum University Beijing China institute of Petroleum Exploration and Exploitation Liaohe Bureau of Petroleum Exploration Panjin China

Distributions and geochemical significances of 18α(H)-neohopanes and of 17α(H)-diahopanes in oils from west Xialiaohe depression of the Bohai Bay Basin have been studied. Relative abundance of 18α(H)-neohopanes and of 17α(H)-diahopanes can be effectively used as maturity parameters, in a range of medium-high mature stage, based on consideration on sedimentary-organic facies of source rocks. With a dual geochemical significance of maturity and sedimentary-organic facies, neohopane and diahopane parameters can be well used in oil-source correlation and in petroleum population division. Formation, primary concentration and preservation of precursors of rearranged hopanes are closely related to depositional conditions such as Eh-pH and clays content. A series of probable diahopanes (series D) was detected in the oils, which exhibits a similar distribution pattern and geochemical behavior as that of 17α(H)-diahopanes (series B).

关键词： 18α(H)-neohopane 17α(H)-diahopane maturity sedimentary-organic facies.

Toxic Volatile organic Compounds in Hotel Guestrooms in guangzhou,South{2.

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Toxic Volatile Organic Compounds in Hotel Guestrooms in Guan...

Denitrification in Qi'ao Island coastal zone,the Zhujiang Estuary in china

2.12.International Conference on Environmental Engineering and Technology(ICEET2.12.

作者： Yan Peng 1,Xinming wang 2 1 institute of Environmental Science and Engineering,state key laboratory of organic geochemistry,guangzhou University,guangzhou institute of geochemistry,chinese academy of sciences,Higher Education Mega Center,guangzhou,china 2 state key laboratory of organic geochemistry,guangzhou,key laboratory of Environment Protection and Resources Utilization guangzhou institute of geochemistry,chinese academy of sciences,Guangdong Province,china

Air samples were collected by stainless steel canisters in twenty hotels' guestrooms in *** volatile organic compounds(VOCs) were determined by preconcentrator-gas chromatography-mass selective detector *** mean concentration of VOC39 was 443.6μg *** levels were found to be higher indoors in half of the *** showed that guangzhou's hotels had pollution of VOCs for some ***,benzene and xylene were major contaminants in aromatic ***,dichloromethane,chloroform,1,2.ichloroethane,1,1,2.2.tetrachloroethane,1,2.dichloropropane,trichloroethylene,carbon tetrachloride and 1,4-dichlorobenzene were major contaminants in chlorinated hydrocarbons.

关键词： Volatile organic compounds Indoor air quality Hotel Aromatic hydrocarbons Chlorinated hydrocarbons

来源： cnki会议评论

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Acta Oceanologica Sinica 2009年第1期28卷 37-46页

作者： wang Hu ZHOU Huaiyang PENG Xiaotong YANG Qunhui QIN Chaomei YIN Xijie CHEN Guangqian guangzhou institute of {2. Chinese Academy of Sciences Guangzhou 510640 China state key {2.. of Marine Geology Tongji University Shanghai 200092 China Graduate University of chinese academy of sciences Beijing 100049 China

Samples of sediments and the overlying water were collected in the Qi＇ao Island coastal zone,the Zhujiang（Pearl River） Estuary（ZE）.Denitrification rates,sediment oxygen demand（SOD）,and fluxes of inorganic nitrogen compounds were investigated with N2.flux method,using a self-designed continuous flow through and auto-sampling *** results indicate that the denitrification rates varied between 2.2.and 908 μmol/（m2.h） with an average of 499 μmol /（m2.h）.During incubation,the sediments absorbed dissolved oxygen in the overlying water with SOD ranging from 300 to 2.363 μmol/（m2.h）.The denitrification rates were highly correlated with the SOD（r2.0.77） regardless of the NO-3＋NO-2.concentrations in the overlying water,organic carbon contents in sediments and water temperature,suggesting that the SOD was probably the main environmental factor controlling the denitrification in the Qi＇ao Island coastal *** was a net flux of NO-3＋NO-2.into the sediments from the overlying *** NH＋4 flux from sediments into water as the result of mineralization was between 12.3 and 2.0.3 μmol/（m2.h）,which seems limited by both organic carbon content in sediment and dissolved oxygen concentration in the overlying water.

关键词： denitrification N2.flux SOD inorganic nitrogen compound Qi' ao Island coastal zone Zhu-jiang Estuary

SYNTHESIS AND CHARACTERIZATION OF NOVEL BIPOLAR PPV-BASED COPOLYMER CONTAINING TRIAZOLE AND CARBAZOLE UNITS

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chinese Journal of Polymer Science 2001年第6期19卷 615-621页

作者： Ze Liu Li-xiang wang Xia-bin Jing Fo-song wang The state key laboratory of Polymer Physics and Chemistry Changchun institute of Applied Chemistry chinese academy of sciences, Changchun 13002., china 中科院长春应用化学所高分子物理与化学国家重点实验室吉林长春

Two new blue light-emitting PPV-based conjugated copolymers containing both an electron-withdrawing unit (triazole-TAZ) and electron-rich moieties (carbazole-CAR and bicarbazole-BCAR) were prepared by Wittig condensation polymerization between the triazole diphosphonium salt and the corresponding dialdehyde monomers. Their structures and properties were characterized by FT-IR, TGA, DSC, UV-Vis, PL spectroscopy and electrochemical measurements. The resulting copolymers are soluble in common organic solvents and thermally stable with a T-g of 147degreesC for TAZ-CAR-PPV and of 157degreesC for TAZ-BCAR-PPV. The maximum photoluminescence wavelengths of TAZ-CAR-PPV and TAZ-BCAR-PPV film appear at 460 nm and 480 nm, respectively. Cyclic voltammetry measurement demonstrates that TAZ-BCAR-PPV has good electrochemical reversibility, while TAZ-CAR-PPV exhibits the irreversible redox process. The triazole unit was found to be an effective pi-conjugation interrupter and can play the rigid spacer role in determining the emission colour of the resulting copolymer.

关键词： light-emitting polymer PPV-based bipolar polymer triazole-containing polymer carbazole-containing polymer