基于文献数据的PAHs生态安全土壤环境基准研究  

Soil Environmental Criteria of Polycyclic Aromatic Hydrocarbons for Ecological Security Based on Literature Data

作　　者：邓继宝 项大洲 林伯正 胡小婕[1] 王贺飞 高彦征[1] DENG Jibao;XIANG Dazhou;LIN Bozheng;HU Xiaojie;WANG Hefei;GAO Yanzheng(Institute of Organic Contaminant Control and Soil Remediation,Nanjing Agricultural University,Nanjing 210095,China)

机构地区：[1]南京农业大学土壤有机污染控制与修复研究所,南京210095

出　　处：《土壤学报》2024年第3期757-769,共13页Acta Pedologica Sinica

基　　金：国家重点研发计划项目(2021YFC1809100);国家自然科学基金项目(42207025);江苏省科技计划专项(BK20221025)资助。

摘　　要：多环芳烃(Polycyclic aromatic hydrocarbons,PAHs)具有致癌、致畸、致突变等“三致”效应,其造成的土壤污染问题受到世界各国的强烈关注。然而我国基于生态安全的土壤风险筛选值和管控标准仍未确立,致使当前土壤生态安全风险评估仍无据可依。通过系统调研国内外土壤中PAHs的生态毒性研究结果,针对16种优先控制PAHs,筛选获得248组毒性数据(Effect concentration10,EC10和No observed effect concentration,NOEC),并利用物种敏感性分布法推导出不同用地方式下各PAH的生态安全土壤环境基准。不同用地方式下各PAH的生态安全土壤环境基准分别为1.00~10.60 mg·kg^(–1)(自然保护地和农用地)、1.03~25.44 mg·kg^(–1)(公园用地)、1.12~51.00 mg·kg^(–1)(住宅用地)、1.20~68.41 mg·kg^(–1)(商服及工业用地)。该研究结果可为我国土壤生态安全环境质量标准的制定和PAHs污染土壤的生态风险评估提供数据支撑和方法指导。【Objective】Polycyclic aromatic hydrocarbons(PAHs)have carcinogenic,teratogenic,and mutagenic effects,and soil PAH pollution has become a world-wide problem.However,ecological soil screening and controlling levels(Eco-SSCLs)for PAHs in China have not yet been established.Thus,soil ecological security risk assessment is still unsubstantiated.【Method】Here,we systematically investigated the research outcomes in related fields at home and aboard,and screened out 248 toxicity data(Effect concentration10,EC10 and No observed effect concentration,NOEC)of 16 pri-control PAHs listed in USEPA.The species sensitivity distributions were developed by a series of cumulative distribution functions,and were successfully used to derive soil environmental criteria of each PAH(PAH-SEC)for ecological security under different land use types.【Result】The PAH-SEC values under different land use types were 1.00^(–1)0.60 mg·kg^(–1)(natural reserve and agricultural land),1.03-25.44 mg·kg^(–1)(parkland),1.12-51.00 mg·kg^(–1)(residential land),1.20-68.41 mg·kg^(–1)(commercial service and industrial land).【Conclusion】The results can provide data support for the formulation of soil environmental quality standards for ecological security,and offer bases for ecological risk assessment of PAHs polluted soil.

关 键 词：土壤 多环芳烃 物种敏感性分布法 生态安全土壤环境基准 

分 类 号：X53[环境科学与工程—环境工程]