Monitor and analyze ambient air mercury species (TGM, RGM, GEM and Hg(p)) with respect to seasonal variations near to an airport

• Main Authors: TSAI, KAI-HSIANG, 蔡凱翔
• Other Authors: FANG, GUOR-CHENG
• Format: Others
• Language: zh-TW
• Published: 2017
• Online Access: http://ndltd.ncl.edu.tw/handle/03804813754531628450

碩士 === 弘光科技大學 === 環境工程研究所 === 105 === This study focuses on the collection of ambient air particulates, mercury species (TGM, RGM, GEM and Hg(p)) pollutants at sampling site at airport nearby during the year of Apr. 2016 to Mar. 2017. The ambient air concentrations of TGM, RGM, GEM and Hg(p) were collected by using Four-stage gold amalgamation and Denuder. The results indicated that the average TSP concentrations were 78.43 μg/m3 during sampling period. And the average PM2.5 concentrations were 34.17 μg/m3 during sampling period. In addition, the average TGM, RGM and GEM concentrations were 5.44 ng/m3, 0.035 pg/m3, 5.40 ng/m3, during the sampling period at this airport sampling site nearby. Moreover, the average TGM and GEM concentrations order follow as spring > autumn > summer > winter. And the average RGM concentration order follow as summer > spring > autumn > winter. Finally, Spearman statistical method displayed Hg(p) in PM2.5 is the only mercury species had significant relationship (P values ＜ 0.050) with meteorological condition wind speed. And the Mann-Whitney U statistical display correlation coefficients in TGM and GEM suggesting that the sample population means are no significant differences. Furthermore, the non-carcinogenic risks via inhalation exposure display the Hg(p) and GEM were harmful free to human health at airport sampling sites nearby. The average mercury species concentrations (TGM, RGM, GEM) displayed declined trend for America (American and Canada) and Europe (Spain, Sweden and Southern Baltic) during years of 2004~2014. Noteworthy, the average mercury species concentrations (TGM, RGM, GEM) displayed increasing trends in China and Taiwan during the years of 2008~2016. The only two exceptions are Japan and Korea. Those above two countries mercury species concentrations displayed decreasing trends during years of 2008~2015.