文献类型： 外文期刊
作者： Yang, Yongkui 1 ; Chen, Hong 1 ; Wang, Dingyong 1 ;
作者机构： 1.Southwest Univ, Coll Resources & Environm, Chongqing 400716, Peoples R China
2.Chongqing Key Lab Agr Resources & Environm, Chongqing 400716, Peoples R China
关键词： Gaseous elemental mercury (GEM);Atmospheric mercury;Variation;Distribution
期刊名称：ENVIRONMENTAL MONITORING AND ASSESSMENT （ 影响因子：2.9； 五年影响因子：3.1 ）
ISSN： 0167-6369
年卷期： 2009 年 156 卷 1-4 期
页码：
收录情况： SCI
摘要： In order to investigate the spatial and temporal variability of atmospheric mercury (Hg) in Chongqing, China, gaseous elemental mercury (GEM) was measured from August 2006 to September 2007, using Lumex(A (R)) multifunctional mercury analyzer RA-915(+) (Lumex Ltd., Russia). The mean GEM concentration was 6.74 +/- 0.37 ng m(-3) in Chongqing, much higher than the accepted global background values (1.5-2 ng m(-3)). The GEM concentrations were different in different function areas. GEM in transport, industrial and commercial areas were 7.07 +/- 1.04, 7.05 +/- 0.96 and 6.71 +/- 1.10 ng m(-3), respectively, while GEM was 6.14 +/- 1.30 and 4.32 +/- 1.04 in the educational/recreational and nature conservation areas, suggesting that Hg emissions from mobile vehicles and industrial sources (specially coal combustion) were the most important contributors to atmospheric Hg in Chongqing. Mean Hg concentrations also had monthly variations with highest in November (8.24 +/- 0.50 ng m(-3)) and lowest values in August (5.36 +/- 0.70 ng m(-3)). Additionally, the diurnal variation of GEM concentrations was dependent on the local/regional atmospheric conditions. At Jinyun Mountain site (natural conservation area), hourly GEM concentrations had much higher values in daytime than at night. At Power Plant site, however, the hourly GEM concentrations were lower in daytime than at night. GEM concentrations in the air were correlated significantly with meteorological parameters except for barometric pressure.
- 相关文献
作者其他论文 更多>>
-
Selenium- and chitosan-modified biochars reduce methylmercury contents in rice seeds with recruiting Bacillus to inhibit methylmercury production
作者：Guo, Pan;Ma, Ming;Rennenberg, Heinz;Du, Hongxia;Xiong, Bingcai;Ma, Ming;Zhao, Wancang;Wang, Mingxing;Wang, Dingyong;He, Mingyan;Flemetakis, Emmanouil;Haensch, Robert
关键词：Biochar; Methylmercury; Paddy soil; Microbes; Network
-
Adsorption effect and mechanism of Cd(II) by different phosphorus-enriched biochars
作者：Zeng, Yang;Lin, Yuhan;Ma, Ming;Chen, Hong;Ma, Ming;Chen, Hong;Ma, Ming;Chen, Hong
关键词：Phosphorous-enriched biochar; Agricultural and forestry waste; Low-grade phosphate rock and derivatives; Cadmium; Adsorption mechanism; Mineral precipitation
-
A Review on the Removal of Heavy Metals from Water by Phosphorus-Enriched Biochar
作者：Zeng, Yang;Lin, Yuhan;Ma, Ming;Chen, Hong;Ma, Ming;Chen, Hong;Ma, Ming;Chen, Hong
关键词：phosphorus-rich biochar; precursor; carbonization process; adsorption mechanism
-
The duality of sulfate-reducing bacteria: Reducing methylmercury production in rhizosphere but enhancing accumulation in rice plants
作者：Guo, Pan;Mao, Qiaozhi;Deng, Yuhan;Wang, Xun;Fan, Xu;Ma, Ming;Du, Hongxia;Xiong, Bingcai;Deng, Yuhan;Wang, Dingyong;Ma, Ming;Li, Jing;Agathokleous, Evgenios
关键词：Rice; Methylmercury; Amino acid; Sulfate-reducing bacteria; Transcription factors
-
Bacterial assemblages imply methylmercury production at the rice-soil system
作者：Guo, Pan;Rennenberg, Heinz;Wang, Tao;Gao, Lan;Ma, Ming;Du, Hongxia;Ma, Ming;Flemetakis, Emmanouil;Hansch, Robert;Wang, Dingyong
关键词：Mercury gradient; Methylation; Plant development; Rice; Microbial interaction
-
Seasonal changes in total mercury and methylmercury in subtropical decomposing litter correspond to the abundances of nitrogen-fixing and methylmercury-degrading bacteria
作者：Yang, Liping;Yang, Guang;Guo, Pan;Wang, Tao;Ma, Ming;Wang, Jueying;Xiong, Bingcai;Du, Hongxia;Ma, Ming;Wang, Dingyong;Du, Hongxia
关键词：Litterfall decomposition; Methylmercury; Nitrogen-fixing microbes; MeHg-degrading microbes; Subtropical forest
-
Differentially-expressed genes related to glutathione metabolism and heavy metal transport reveals an adaptive, genotype-specific mechanism to Hg2+exposure in rice (Oryza sativa L.)
作者：Wang, Shufeng;Guo, Pan;Rennenberg, Heinz;Ma, Ming;Yao, Hesheng;Li, Lingyi;Du, Hongxia;Wang, Dingyong
关键词：Mercury; Accumulation; Tolerance; Antioxidant system; Differentially expressed genes (DEGs)
