农业环境科学学报2017，Vol.36Issue(12)：2462-2470,9.DOI:10.11654/jaes.2017-0725
沈北新区土壤中多环芳烃潜在风险评价
Potential risk assessment of polycyclic aromatic hydrocarbons in soils of Shenyang North New Area, China
摘要
Abstract
Soil samples were collected from 0～20 cm depth(n=101)in 5 land use types in Shenyang North New Area(SNNA), Shenyang, China via a uniform grid layout method. Pollution characteristics, ecological risk, and the health risk of the 16 polycyclic aromatic hydrocar-bons(PAHs)in soil listed by the Environmental Protection Agency of the United States were measured. Total concentration of the 16 PAHs (TPAHs)in soils of SNNA ranged from 123.7μg·kg-1 to 932.5μg·kg-1. Average concentrations of TPAHs in different land use types de-creased in the order of urban green land>artificial forest land>community vegetable land>maize land>paddy land. The TPAHs in the green land was the highest, and was over 10 times the relative soil quality standard in the Netherlands. According to Nemerow's Pollution Index, 23.8％of the sampling sites were heavily contaminated with PAHs, and concentrations decreased significantly from south to north. Toxic e-quivalents of PAHs in SNNA ranged from 1.39μg·kg-1 to 96.41μg·kg-1, with a mean value of 17.96(± 6.59)μg·kg-1. Therefore, the over-all potential ecological risk was low. PAHs in the soil of SNNA did not pose significant non-carcinogenic risks to children or adults by non-carcinogenic or carcinogenic risk assessments. Cancer risk models showed that the risk of carcinogenic PAHs in SNNA was<10-6, and inges-tion had the highest carcinogenic risk for humans. Urban green land soils had the highest carcinogenic risk. This information is important to develop best management practices to reduce the influence of polluted soil on human health.关键词
沈北新区/多环芳烃/生态风险评价/健康风险评价Key words
Shenyang North New Area/PAHs/ecological risk assessment/health risk assessment分类
资源环境引用本文复制引用
李嘉康,宋雪英,魏建兵,郭畔,李玉双..沈北新区土壤中多环芳烃潜在风险评价[J].农业环境科学学报,2017,36(12):2462-2470,9.基金项目
国家自然科学基金项目(21377139,41571092,21307084) （21377139,41571092,21307084）
沈阳市科学事业费竞争性选择项目 （）
辽宁省教育厅高校杰出青年学者成长计划项目(LJQ2013121) The National Natural Science Foundation of China(21377139 ,41571092 ,21307084) （LJQ2013121）
Competitive Selection Project of Shenyang Scientific Undertaking （）
Growth Program for Outstanding Young Scholar of the Education Department of Liaoning Province(LJQ2013121) （LJQ2013121）
