ECOLOGICAL RISK OF MERCURY IN SURFACE SEDIMENTS OF TYPICAL URBAN STREAM IN GUIZHOU PROVINCE

WANG Qing-feng; FAN Lei-lei; WANG Dan; PENG Hui-hui; LI Zhong-gen

doi:10.13205/j.hjgc.202008041

Volume 38 Issue 8

Nov. 2020

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2020 > 38(8): 249-254

WANG Qing-feng, FAN Lei-lei, WANG Dan, PENG Hui-hui, LI Zhong-gen. ECOLOGICAL RISK OF MERCURY IN SURFACE SEDIMENTS OF TYPICAL URBAN STREAM IN GUIZHOU PROVINCE[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(8): 249-254. doi: 10.13205/j.hjgc.202008041

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WANG Qing-feng, FAN Lei-lei, WANG Dan, PENG Hui-hui, LI Zhong-gen. ECOLOGICAL RISK OF MERCURY IN SURFACE SEDIMENTS OF TYPICAL URBAN STREAM IN GUIZHOU PROVINCE[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(8): 249-254. doi: 10.13205/j.hjgc.202008041

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ECOLOGICAL RISK OF MERCURY IN SURFACE SEDIMENTS OF TYPICAL URBAN STREAM IN GUIZHOU PROVINCE

doi: 10.13205/j.hjgc.202008041

1. Department of Resources and Environment, Zunyi Normal University, Zunyi 563008, China;
2. State Key Laboratory of Ore Deposit Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China

Received Date: 2019-06-23

Abstract

Abstract

Xiangjiang River is a typical urban stream flowing through the main urban area of Zunyi. To evaluate the pollution characteristics and ecological risk of mercury of Zunyi Xiangjiang River, the surface sediments system were collected and analyzed. The results showed that the mercury content of surface sediments was ranged in 0.131~3.132 ng/g and the mercury content in downstream of both river water and sediments was much higher than upstream, and was positively correlated with the distance passed though urban areas. The methyl mercury concentration of surface sediments was ranged in 2.1~31.4 ng/g and accounted for 1.11%~1.87% of the total mercury. Furthermore, the results of BCR three-step sequential extraction procedure showed that the mercury in the sediment was mainly in the form of residue. The risk assessment indicated that the Xiangjiang River was mildly polluted while it had considerable potential ecological risk.
- Xiangjiang River in Zunyi,
- sediments,
- mercury content,
- pollution assessment

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References(34)

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