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Short-time variation of mercury speciation in the urban of Goteborg during GOTE-2005

文献类型： 外文期刊

作者： Li, Jing 1 ; Sommar, Jonas 2 ; Wangberg, Ingvar 3 ; Lindqvist, Oliver 2 ; Wei, Shi-qiang 1 ;

作者机构： 1.Southwest Univ, Coll Resources & Environm, Chongqing 400716, Peoples R China

2.Univ Gothenburg, Dept Chem, S-41296 Gothenburg, Sweden

3.Swedish Environm Res Inst Ltd, SE-40014 Gothenburg, Sweden

4.Chongqing Key Lab Agr Resources & Environm, Chongqing 400716, Peoples R China

关键词： Gaseous elemental mercury;Reactive gaseous mercury;Particulate mercury;Mercury sources

期刊名称：ATMOSPHERIC ENVIRONMENT （ 影响因子：4.798； 五年影响因子：5.295 ）

ISSN： 1352-2310

年卷期： 2008 年 42 卷 36 期

页码：

收录情况： SCI

摘要： Mercury species samples for gaseous elemental mercury (GEM) with a temporal resolution of 5 min, 5 h and 20 min integrated measurements of reactive gaseous mercury (RGM), and 24-h sampling of particulate mercury (HgP) at urban Femman and total gaseous mercury (TGM) at rural Rorvik were conducted during the measurement campaign GOTE-2005 in Goteborg, Sweden. Results showed that average concentrations for GEM, RGM, HgP and TGM were 1.96 +/- 0.38 ng m(-3), 2.53 +/- 4.09 pg m(-3), 12.50 +/- 5.88 pg m(-3) and 1.63 +/- 0.19 ng m(-3), respectively. A reverse diurnal distribution pattern between GEM and RGM was observed, and early morning GEM concentration was elevated compared to daytime values which was likely due to activation of fossil fuel combustion, electric utilities, etc., by the formation of a nighttime inversion layer, less activity of GEM and reduced mixing. The subsequent decline and afternoon minimum were likely related to increase vertical mixing, photochemical reaction, and coupling with the coal combustion. However, the photochemical conversion from GEM during daytime and nocturnal behavior of "sticky" gases under higher relative humidity may result in strong diurnal cycles for RGM. Sampling site was heavily affected by anthropogenic sources from two distinguished wind sectors. One was ESE-SSW sector which was likely impacted by long distance transport from south highly industrialized region; the other was likely tied with local sources from N-NE sector. (c) 2008 Elsevier Ltd. All rights reserved.

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