title: Annual ambient atmospheric mercury speciation measurement from Longjing, a rural site in Taiwan.
abstract: The main purpose of this study was to monitor ambient air particulates and mercury species [RGM, Hg(p), GEM and total mercury] concentrations and dry depositions over rural area at Longjing in central Taiwan during October 2014 to September 2015. In addition, passive air sampler and knife-edge surrogate surface samplers were used to collect the ambient air mercury species concentrations and dry depositions, respectively, in this study. Moreover, direct mercury analyzer was directly used to detect the mercury Hg(p) and RGM concentrations. The result indicated that: (1) The average highest RGM, Hg(p), GEM and total mercury concentrations, and dry depositions were observed in January, prevailing dust storm occurred in winter season was the possible major reason responsible for the above findings. (2) The highest average RGM, Hg(p), GEM and total mercury concentrations, dry depositions and velocities were occurred in winter. This is because that China is the largest atmospheric mercury (Hg) emitter in the world. Its Hg emissions and environmental impacts need to be evaluated. (3) The results indicated that the total mercury ratios of Kaohsiung to that of this study were 5.61. This is because that Kaohsiung has the largest industry density (~60 %) in Taiwan. (4) the USA showed average lower mercury species concentrations when compared to those of the other world countries. The average ratios of China/USA values were 89, 76 and 160 for total mercury, RGM and Hg(p), respectively, during the years of 2000-2012.
authors: Department of Safety, Health and Environmental Engineering, Hung Kuang University, Sha-Lu, Taichung, 433, Taiwan, ROC. gcfang@sunrise.hk.edu.tw.
authors: Guor-Cheng
authors: GC
authors: Fang
authors: Department of Biotechnology, National Formosa University, Yunlin, 63208, Taiwan, ROC.
authors: Chaur-Tsuen
authors: CT
authors: Lo
authors: Department of Safety, Health and Environmental Engineering, Hung Kuang University, Sha-Lu, Taichung, 433, Taiwan, ROC.
authors: Meng-Hsien
authors: MH
authors: Cho
authors: Department of Safety, Health and Environmental Engineering, Hung Kuang University, Sha-Lu, Taichung, 433, Taiwan, ROC.
authors: Yuan-Jie
authors: YJ
authors: Zhuang
authors: Department of Safety, Health and Environmental Engineering, Hung Kuang University, Sha-Lu, Taichung, 433, Taiwan, ROC.
authors: Kai-Hsiang
authors: KH
authors: Tsai
authors: Department of Safety, Health and Environmental Engineering, Hung Kuang University, Sha-Lu, Taichung, 433, Taiwan, ROC.
authors: Chao-Yang
authors: CY
authors: Huang
authors: Department of Safety, Health and Environmental Engineering, Hung Kuang University, Sha-Lu, Taichung, 433, Taiwan, ROC.
authors: You-Fu
authors: YF
authors: Xiao
mesh_terms: D000393:Air Pollutants / Q000032:analysis*; D002681:China; D004784:Environmental Monitoring; D008628:Mercury / Q000032:analysis*; D052638:Particulate Matter / Q000032:analysis*; D012016:Reference Values; D012621:Seasons; D013624:Taiwan; D013997:Time Factors; D014481:United States
chemical_list: D000393:Air Pollutants; D052638:Particulate Matter; D008628:Mercury
keywords: Direct mercury analyzer; Particulate-bound mercury; Reactive gaseous mercury; Total gaseous mercury