气候变化领域集成服务门户(CCPortal): Study on mercury in PM10 at an urban site in the central indo-gangetic plain: Seasonal variability and influencing factors

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DOI	10.4209/aaqr.2019.12.0630
	Study on mercury in PM10 at an urban site in the central indo-gangetic plain: Seasonal variability and influencing factors
	Guo J.; Ram K.; Tripathee L.; Kang S.; Huang J.; Chen P.; Ghimire P.S.
发表日期	2020
ISSN	13522310
起始页码	2729
结束页码	2740
卷号	20 期号:12
英文摘要	Mercury (Hg) is among the most toxic metals possessing a major threat to human health and aquatic ecosystems over the globe. However, measurement of Hg concentrations and seasonal variability remain poorly understood over the IndoGangetic Plain (IGP) in northern India. In this study, we present one-year data of particulate-bound mercury (HgP) in aerosol samples (PM10) collected from Kanpur to understand seasonal variability and factors influencing concentration, as well as dry deposition flux. The HgP concentration exhibit a large temporal variability and ranged between 100 (on 14 June 2007) to 4340 pg m–3 (on 4 March 2007) with an annual average concentration of HgP is 776 ± 846 pg m–3. The HgP concentrations and HgP/PM10 ratios showed a marked seasonality with the highest in winter (Dec-Feb) followed by post-monsoon (Oct– Nov) and summer (April–June) seasons. HgP and HgP/PM10 were positively correlated (r2 = 0.77, p < 0.05, N = 58) during the sampling period and the estimated dry deposition flux of HgP was 104.7 µg m–2 y–1. Although this study provides a comprehensive data set on HgP in an urban atmosphere of the IGP revealing high levels of HgP, measurement of gaseous Hg is needed for estimation of the total Hg budget. Therefore, future studies should focus on identification of different sources as well as emission characteristics of all forms of Hg (organic and inorganic forms) for better mitigation strategy to prevent health risks associated with toxic Hg in the region. © The Author(s).
英文关键词	Aerosol; Dry deposition flux; Indo-Gangetic Plain; Particulate mercury; South Asia
语种	英语
scopus关键词	Aerosol and Air Quality Research
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/158491
作者单位	State Key Laboratory of Cryospheric Science, Northwest Institute of Eco-environment and Resources, Chinese Academy of Sciences (CAS), Lanzhou, 730000, China; Institute of Environment and Sustainable Development, Banaras Hindu University, Varanasi, U.P. 221005, India; CAS Center for Excellence in Tibetan Plateau Earth Sciences, Beijing, 100085, China; Key Laboratory of Tibetan Environment Changes and Land Surface Processes, Institute of Tibetan Plateau Research, Chinese, Academy of Sciences, Beijing, 100101, China; Himalayan Environment Research Institute, Kathmandu, Nepal; University of Chinese Academy of Sciences, Beijing, 100049, China
推荐引用方式 GB/T 7714	Guo J.,Ram K.,Tripathee L.,et al. Study on mercury in PM10 at an urban site in the central indo-gangetic plain: Seasonal variability and influencing factors[J]. 中国科学院西北生态环境资源研究院,2020,20(12).
APA	Guo J..,Ram K..,Tripathee L..,Kang S..,Huang J..,...&Ghimire P.S..(2020).Study on mercury in PM10 at an urban site in the central indo-gangetic plain: Seasonal variability and influencing factors.,20(12).
MLA	Guo J.,et al."Study on mercury in PM10 at an urban site in the central indo-gangetic plain: Seasonal variability and influencing factors".20.12(2020).