乌达-乌斯太工业园大气颗粒物中汞的形态及空间分布特征

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Abstract

The Hg speciation in atmospheric particulates is an important issue to be elucidated in the field of atmospheric Hg. Carbon analytic (OC/EC), ion chromatography (IC), temperature-programmed desorption analysis (TPD), imaging analysis methods were used to analyze the specific existence and spatial distribution of Hg in PM_2.5 at Wuda-Wusitai industrial park, Inner Mongolia. The results showed that the correlation coefficients(r) between Hg content and organic carbon (OC), elemental carbon (EC), Cl^- and NO₃^- content in PM_2.5 were < 0.1, < 0.1, 0.854 and 0.745, respectively. Hg in the atmospheric particulates mainly existed in the forms of HgCl₂, HgS, HgO and Hg (NO₃)₂·H₂O. The particulate Hg content was more concentrated in the high Hg⁰ concentration, high chlorine and high acid (nitric acid) regions. The results indicated that industrial activities such as chlorine and acid discharge might play an important role in the enrichment of mercury in atmospheric particulates.

Key words： industrial park atmospheric particulates PM_2.5 mercury species spatial distribution

Received: 27 May 2019

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X51

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	Articles by authors
	CAO Qing-yi
	QIAN Ya-hui
	LIANG Han-dong
	WANG Zhe

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CAO Qing-yi,QIAN Ya-hui,LIANG Han-dong等. The species and spatial distribution characteristics of atmospheric particulate mercury in Wuda-Wusitai Industrial Park, China[J]. CHINA ENVIRONMENTAL SCIENCECE, 2019, 39(12): 4989-4998.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2019/V39/I12/4989

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