CHARACTERISTICS IDENTIFICATION AND HEALTH RISK ASSESSMENT OF MERCURY CONTAMINATED SITES

ZHAO Bin; PENG Tianyue; ZHANG Hao; WANG Liuwei; ZONG Wenjing; HOU Deyi

doi:10.13205/j.hjgc.202304028

Volume 41 Issue 4

Apr. 2023

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2023 > 41(4): 205-212

ZHAO Bin, PENG Tianyue, ZHANG Hao, WANG Liuwei, ZONG Wenjing, HOU Deyi. CHARACTERISTICS IDENTIFICATION AND HEALTH RISK ASSESSMENT OF MERCURY CONTAMINATED SITES[J]. ENVIRONMENTAL ENGINEERING , 2023, 41(4): 205-212. doi: 10.13205/j.hjgc.202304028

Citation:

ZHAO Bin, PENG Tianyue, ZHANG Hao, WANG Liuwei, ZONG Wenjing, HOU Deyi. CHARACTERISTICS IDENTIFICATION AND HEALTH RISK ASSESSMENT OF MERCURY CONTAMINATED SITES[J]. ENVIRONMENTAL ENGINEERING , 2023, 41(4): 205-212. doi: 10.13205/j.hjgc.202304028

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CHARACTERISTICS IDENTIFICATION AND HEALTH RISK ASSESSMENT OF MERCURY CONTAMINATED SITES

doi: 10.13205/j.hjgc.202304028

1. School of Environment, Tsinghua University, Beijing 100084, China;
2. Institute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou 510650, China;
3. Guangzhou Marine Geological Survey, China Geological Survey, Guangzhou 510075, China;
4. Technical Centre for Soil, Agriculture and Rural Ecology and Environment, Ministry of Ecology and Environment, Beijing 100012, China

Received Date: 2022-07-16
Available Online: 2023-05-26
Publish Date: 2023-04-01

Abstract

Abstract

Characteristic identification and risk management of mercury-contaminated sites are an important implementation plan of the Minamata Convention on Mercury(the Convention). Focusing on the scientific problems regarding unclear characteristics of site-scale mercury pollution and inadequate risk management system, life-cycle Hg flow along with potential contamination pathways within different anthropogenic activities were studied systematically. Site characteristics, consisting of sources, emission, transport and transformation, were discussed on a typical Hg-contaminated site from Hg ore mining and smelting, where a conceptual site model was constructed and systematic management strategies were studied. Research results showed that mercury-contaminated sites were related to intentional discharge activities, including ore mining, mercury catalysts, Chlor-alkali, polyvinyl chloride, treatment of Hg-containing waste, etc., and unintentional discharge activities, including coal-fired power plants, non-ferrous metal smelting, cement production. Inorganic and organic mercury species at a site scale undergone the biogeochemistry cycling of spatial migration and specie transformations, which were required to be considered in further risk assessment. Meanwhile, a conceptual site model (CSM) was established based on the exposure scenario of a typical mercury-contaminated site. It indicated that mercury posed health risks to the human body via various exposure routes, including oral ingestion, inhalation, water drinking, and food intake. Sophisticated risk assessment methods and feasible risk control strategies were discussed based on the practical experiences of the developed countries and actual situation of China. It was concluded that accurate risk assessment based on the mercury biochemical transformation process and risk priority-based classified restoration/risk management might become a scientific, standardized, environmentally friendly and sustainable risk management for mercury-contaminated sites. This work provided a significant basis for site classification and management strategy, which might improve the fulfillment capacity towards the Convention. Finally, the development trend and outlook in risk management of mercury-contaminated sites were also discussed.
- mercury,
- contaminated site,
- conceptual site model,
- risk control,
- site management

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References(49)

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