Health risk assessment based on bioaccessibility of heavy metals in aged soils

作者：Xu Damao; Yan Bo; Chen Tao; Lei Chang; Li Liang; Xiao Xianming

来源：Huagong Jinzhan/Chemical Industry and Engineering Progress, 2017, 36(7): 2632-2638.

DOI：10.16085/j.issn.1000-6613.2016-2172

• Aged soil
• Bioaccessibility
• Contaminated sites
• Contaminated soils
• Environmental risks
• In-vitro
• Management countermeasures
• Soil physical and chemical properties

The incidences of heavy metals in contaminated soil are emerging a high and multiple periods. Besides, the bioavailability of heavy metals is decreasing with aging time of the soil, and potential environmental risk of their contamination will correspondingly be declining. In vitro methods can effectively indicate the bioavailability of heavy metals, and significantly cut down the conservativeness of health risk assessment results based on the total exposure dose that is the total concentrations of heavy metals. The in vitro methods have been applied to assess the health risk of heavy metals in aged soils, and have been of great concern. In this paper, the bioaccessibility of heavy metals was defined. The test methods were summed up, and the main factors were also quantitatively clarified, which mainly include in vitro parameters, soil physical and chemical properties and characteristics of heavy metals and so on. In addition, the bioaccessibility of heavy metals applied in health risk assessment were discussed. Finally, the summary of current challenges and the prospectof further studies in the field have been raised. The purpose of this article is to provide the theoretical support for contaminated sites in the risk source identification, repair target determination and management countermeasures screening.

• 出版日期2017
• 单位中国科学院大学