Characteristics and potential sources of atmospheric particulate mercury in Jinan, China
Characteristics and potential sources of atmospheric particulate mercury in Jinan, China
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济南市大气颗粒汞特征及潜在来源
DOI：
10.1016/j.scitotenv.2016.08.069
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发表时间：
2017
影响因子：
9.8
通讯作者：
Guanghao Qie
中科院分区：
文献类型：
--
作者：
Yaxin Li;Yan Wang;Yan Li;Tao Li;Huiting Mao;Robert Talbot;Xiaoling Nie;Chen Wu;Yanfang Zhao;Chenxiao Hou;Guirong Wang;Jie Zhou;Guanghao Qie
2014年6月至2015年12月在中国济南郊区进行了大气颗粒物汞（PHg）测量。平均PHg浓度为508.5±402.7pgm−3，PM2.5（直径2.5μm以下颗粒物）中Hg平均含量为6.60±5.82μgg−1。 PHg和Hg含量 PM2.5气溶胶与中国部分城市的水平相当，远高于北美和欧洲城市。 PHg 与气象参数之间的相关性较弱。 PHg 与环境空气中其他污染物（包括 SO2、CO 和 NOx）之间的相关性以及它们对风的依赖性被用于源分析，这表明燃煤工业、水泥厂和交通排放是该地点潜在的当地源。 36小时后向轨迹聚类分析表明，来自山东省西南部的区域运输也对济南市的PHg产生了贡献。
Measurements of atmospheric particulate mercury (PHg) were conducted at a suburban site in Jinan, China from June 2014 to December 2015. The average PHg concentration was 508.5 ± 402.7 pg m− 3, and the average Hg content in PM2.5(particles with a diameter of 2.5 μm or less) was 6.60 ± 5.82 μg g− 1. Both PHg and Hg content in PM2.5aerosols were comparable to levels in some cities in China and were much higher than in cities in North America and Europe. Weak correlations were found between PHg and meteorological parameters. The correlations between PHg and other pollutants in ambient air, including SO2, CO and NOχ, together with their wind dependence were used for source analysis, which suggested coal-fired industries, cement plants and traffic emissions as potential local sources for the site. Cluster analysis of 36-h backward trajectories suggested that the regional transport from southwestern Shandong Province also contributed to PHg in Jinan.