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Distribution and deposition of polycyclic aromatic hydrocarbons in precipitation in Guangzhou, South China

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Journal of Environmental Sciences 2009年第5期21卷 654-660页

作者： HUANG Deyin PENG Ping'an XU Yigang deng Yunyun deng hongmei State Key Laboratory of Organic Geochemistry Guangzhou Institute of Geochemistry Chinese Academy of Sciences Guangzhou 510640 China Guangdong Key Laboratory of Agricultural Environment Pollution Integrated Control Guangdong Institute of Eco-environment and Soil Sciences Guangzhou 510650 China Graduate University of Chinese Academy of Sciences Beijing 100039 China Key Laboratory of lsotope Geochronology and Geochemistry Guangzhou Institute of Geochemistry Chinese Academy of Sciences Guangzhou 510640 China

Polycyclic aromatic hydrocarbons （PAHs） were measured in precipitation from March to August 2005 in Guangzhou, South China. Fourteen PAHs were studied, and their total concentrations varied from 616.6 to 3486.7 ng/L in dissolved phase and from 403.8 to 3125.5 ng/L in particulate phase. The estimated deposition loading of PAHs was 3568 ug/m^2 during the monitoring period. The deposition of PAHs was a potential source for Pearl River comparing with the contents of surface water. In addition, the high concentration in precipitation here implied that PAHs pollution was a potential environmental problem in Guangzhou. Most precipitation concentrations of PAHs in March （the last month in winter in Guangzhou） were higher than in the other months （in rainy season）. PAHs inclined to be adsorbed to particulate phase with the increase of molecular weight in rainwater. Combustion of fossil fuel and biomass might be the major source of PAHs, while the direct leakage or volatilization from petroleum products might be insignificant.

关键词： polycyclic aromatic hydrocarbons distribution coefficient deposition flux precipitation Guangzhou

Regioselective Synthesis of 2,6-Dimethyl-3,5-bis[（3-aryl-5- trifluoromethyl）-isoxazol-4-carbonyl]-pyridine Derivatives

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Chinese Journal of Chemistry 2013年第7期31卷 950-954页

作者： Yindi Yang Min Zhang Yiwen Zhu Li Zhang Qiqiang Xie Liping Song hongmei deng School of Science Shanghai University Shanghai 200444 China Key Laboratory of Organofluorine Chemistry Shanghai Institute of Organic Chemistry Chinese Academy of Sciences Shanghai 200032 China Laboratory for Microstructures Shanghai University Shanghai 200444 China

Ethyl 4,4,4-trifluoro-3-oxo-butyrate reacted with 2,6-dimethyl-3,5-diacetyl-pyridine 1 in the presence of NaOC2H5 at 0 ℃ to give 2,6-dimethyl-3,5-bis（4,4,4-trifluoro-1,3-oxo-butyl）-pyridine （2a） in good yield. Cyclization reaction of 2a and aryl imidoyl chlorides 5a--5i, obtained from chlorination of aryl oximes with N-chlorosuccimide, afforded 2,6-dimethyl-3,5-bis[（3-aryl-5-trifluoromethyl）-isoxazol-4-carbonyl]-pyridine derivatives 6a=6i.

关键词： cyclization reaction trifluoromethyl-1,3-diketones aryl imidoyl chlorides regioselective 3,5-bis(5- trifluoromethyl-isoxazol)-pyridine derivatives

An Efficient One-pot Three-component Process for Synthesis of Perfluoroalkylated Quinolizines

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Chinese Journal of Chemistry 2016年第5期34卷 524-532页

作者： Dandan Shen Yanjie Xu Dong He Jing Han Jie Chen hongmei deng Min Shao Hui Zhang Weiguo cao Department of Chemistry Innovative Drug Research Center Shanghai University Shanghai 200444 China Laboratory for Microstructures Instrumental Analysis and Research Center of Shanghai University Shanghai 200444 China State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic Chemistry Chinese Academy of Sciences Shanghai 200032 China Key Laboratory of Organofluorine Chemistry Shanghai Institute of Organic Chemistry Chinese Academy of Sciences Shanghai 200032 China Key Laboratory of Synthetic Organic Chemistry of Natural Substances Shanghai Institute of Organic Chemistry Chinese Academy of Sciences Shanghai 200032 China

A facile multi-component process for the synthesis of perfluoroalkylated quinolizine derivatives was achieved using various arylidenemalononitriles, pyridine, and methyl perfluoroalk-2-ynoates as starting materials. Moderate yields were obtained under mild condition. The structures of perfluoroalkylated quinolizine derivatives were char- acterized by means of IH NMR, 13C NMR, 19F NMR, IR, LRMS and HRMS. Furthermore, the reaction mechanism was proposed.

关键词： quinolizines perfluoroalkylated multi-component one-pot reaction

Stereoselective Synthesis of Sulfonyl-substituted trans-2,3-Dihydrofuran Derivatives via Reaction of Arsonium Ylides with α,β-Unsaturated Ketones

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Chemical Research in Chinese Universities 2014年第4期30卷 596-600页

作者： CAO Long ZHOU Xiaohong CHEN Jie ZHANG Hui deng hongmei SHAO Min McMILLS Mark C. CAO Weiguo Department of Chemistry Shanghai University Shanghai 200444 P. R. China State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic Chemistry Chinese Academy of Sciences Shanghai 200032 P. R. China Instrumental Analysis and Research Center Shanghai University Shanghai 200444 P. R. China Department of Chemistry and Biochemistry Ohio University Athens Ohio 45701 USA

Trans-2,3-dihydrofuran derivatives 3 or 4 substituted with a sulfonyl group were prepared with high chemoselectivity and good yields by [1＋4]-addition reaction of α,β-unsaturated ketones 1 with arsonium bromide 2 in CH2Cl2 in the presence of potassium carbonate at room *** structures of the products were characterized by IR,MS,^1H NMR,elemental analysis and single crystal X-ray diffraction analysis.A mechanism for the formation of products was also proposed.

关键词： Stereoselectivity Dihydrofuran Arsonium Ylide

FORMABILITY OF INTERMEDIATE COMPOUNDS IN OXIDE SYSTEMS OF M₂O₃-M’₂O₃ TYPE

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中国有色金属学会会刊：英文版 1998年第2期8卷 135-137页

作者： Wu, Zhu Li, Chonghe deng, hongmei Chen, Nianyi Wu, Ping

ＦＯＲＭＡＢＩＬＩＴＹＯＦＩＮＴＥＲＭＥＤＩＡＴＥＣＯＭＰＯＵＮＤＳＩＮＯＸＩＤＥＳＹＳＴＥＭＳＯＦＭ２Ｏ３Ｍ′２Ｏ３ＴＹＰＥ①ＷｕＺｈｕ，ＬｉＣｈｏｎｇｈｅ，ＤｅｎｇＨｏｎｇｍｅｉａｎｄＣｈｅｎＮｉａｎｙｉＳｈａ... 详细信息

ＦＯＲＭＡＢＩＬＩＴＹＯＦＩＮＴＥＲＭＥＤＩＡＴＥＣＯＭＰＯＵＮＤＳＩＮＯＸＩＤＥＳＹＳＴＥＭＳＯＦＭ２Ｏ３Ｍ′２Ｏ３ＴＹＰＥ①ＷｕＺｈｕ，ＬｉＣｈｏｎｇｈｅ，ＤｅｎｇＨｏｎｇｍｅｉａｎｄＣｈｅｎＮｉａｎｙｉＳｈａｎｇｈａｉＩｎｓｔｉｔｕｔｅｏｆＭ...

关键词： oxide system calculation of phase diagram complex oxide

APPLICABILITY OF QUASICHEMICAL MODEL FOR SOME LIQUID ALLOYS WITH STRONG-INTERACTED COMPONENTS

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中国有色金属学会会刊：英文版 1997年第4期7卷 130-133页

作者： Li Jianfeng, deng hongmei, Chen Nianyi Shanghai Institute of Metallurgy, Chinese Academy of Sciences, Shanghai 200050

ＡＰＰＬＩＣＡＢＩＬＩＴＹＯＦＱＵＡＳＩＣＨＥＭＩＣＡＬＭＯＤＥＬＦＯＲＳＯＭＥＬＩＱＵＩＤＡＬＬＯＹＳＷＩＴＨＳＴＲＯＮＧＩＮＴＥＲＡＣＴＥＤＣＯＭＰＯＮＥＮＴＳ①ＬｉＪｉａｎｆｅｎｇ，ＤｅｎｇＨｏｎｇｍｅｉ，Ｃ... 详细信息

ＡＰＰＬＩＣＡＢＩＬＩＴＹＯＦＱＵＡＳＩＣＨＥＭＩＣＡＬＭＯＤＥＬＦＯＲＳＯＭＥＬＩＱＵＩＤＡＬＬＯＹＳＷＩＴＨＳＴＲＯＮＧＩＮＴＥＲＡＣＴＥＤＣＯＭＰＯＮＥＮＴＳ①ＬｉＪｉａｎｆｅｎｇ，ＤｅｎｇＨｏｎｇｍｅｉ，ＣｈｅｎＮｉａｎｙｉＳｈａｎｇｈａｉ...

关键词： genetic algorithms thermodynamic properties quasichemical model Na Tl alloys Na Sn alloys

Preparation and chemical characterization of banana/orange composite wine

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Journal of Bioresources and Bioproducts 2016年第2期1卷 74-79页

作者： hongmei deng Chun Wang Huining Xiao Avik Khan School of Environmental and Biological Engineering Guangdong University of Petrochemical TechnologyMaoming525000China Department of Chemical Engineering University of New BrunswickFrederictonNBCanada E3B 5A3

Banana/orange composite wine was brewed in the lab by liquid fermentation using angel yeast and lactic acid bacteria as the fermentation strains,and characterized by chemical *** was found that the best ratio of banana juice to navel orange juice was 1:2,and the optimum alcohol fermentation parameters were as follows:28~30℃,22%initial sugar content,6%yeast,and 6 days of fermentation to reach an alcohol concentration of 11.63%v/*** free amino acids in the composite wines were tested by automatic amino acid analyzer,and the flavor components of the composite wine were determined and analyzed by gas chromatography-mass spectrometry(GC-MS).Seven types of trace elements in the composite wine were measured by atomic absorption *** showed that there were 17 free amino acids,and their total concentration was up to 897.6 mg/L.A total of 16 key compounds were identified in the composite wine,11 of which were ester,4 of which were alcohols and 1 of which was ***,iron,copper and manganese elements were relatively rich in the wine,while lead was extremely low.

关键词： Banana Navel orange Fermentation Fruit wine Amino acid Volatile aroma components Trace elements

COMPOSITION AND SPECTROSCOPIC STUDIES OF HYDRATED SODIUM ALUMINATE COMPOUNDS

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Acta Metallurgica Sinica(English Letters) 1996年第3期9卷 177-180页

作者： QIU Guofang, deng hongmei, ZENG Wenming and CHEN Hianyi(Shanghai Institute of Metallurgy, Chinese Academy of Sciences, Shanghai 200050, China)

XRD, IR, NMR and a 'tracer method' are used to investigate two hydrated sodium aluminates. It has been found that the compositions of these two compounds are 4Na2O-Al2O-3-12H2O and Na2O-Al2O3-2.5H2O, respecttvely. The... 详细信息

关键词： sodium aluminate hydrate composition spectroscopic study

Anti-tumor activities of macromolecular fractions of fresh gecko vivo and their induction of Bel-7402 cell differentiation

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Journal of Traditional Chinese Medical Sciences 2017年第4期4卷 328-335页

作者： Yuxia Wang Xiangxiang Gu hongmei deng Di Geng Huaying Sun Chunmei Wang School of Life Sciences Beijing University of Chinese MedicineBeijing100102China

Objective:To investigate the anti-tumor effect of macromolecular fractions of fresh gecko (M-AG) in vivo and their differentiation-inducing activity in Bel-7402 cells in ***:An H22 hepatocarcinoma-bearing mouse model was used to evaluate the anti-tumor activity of M-AG *** 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay was applied to analyze cell *** morphology was observed by phase contrast *** quantity of the alpha-fetoprotein was detected by a *** was used to assay the albumin *** of alkaline phosphatase and γ-glutamyl trans-peptidase were measured by biochemical ***,western blotting was applied to assess proteins in the mitogen-activated protein kinase (MAPK) signaling ***:Macromolecular fractions of fresh gecko exerted a significant anti-tumor effect in *** inhibition rate of tumor growth was 63% in the moderate M-AG dose *** treated with M-AG displayed a differentiated *** treatment lowered alphafetoprotein secretion and significantly decreased the activities of γ-glutamyl trans-peptidase and alkaline phosphatase in Bel-7402 *** contrast,M-AG increased the amount of albumin in the cell culture *** biochemical indices demonstrated that M-AG induced Bel7402 cell *** blotting showed no changes in the quantities of extracellular signal-regulated kinase (ERK) 1/2,p38MAPK,or c-Jun N-terminal protein kinase 1/***,M-AG significantly activated the phosphorylation of ERK1/2 in a dose-dependent *** addition,M-AG had no significant influence on the expression of nuclear factor-kappa ***:Macromolecular fractions of fresh gecko has an anti-tumor activity in H22 hepatocarcinoma-bearing mice in vivo and inhibits Bel-7402 cell proliferation in vitro by inducing cell differentiation related to activation of ERK1/2.

关键词： Macromolecular fractions of fresh gecko H22 hepatocarcinoma-bearing mice Anti-tumor activity Induced differentiation ERK1/2