文献类型：期刊文献

中文题名：广州市土壤多环芳烃污染特征及风险评估

英文题名：Pollution Characteristics and Risk Assessment of Polycyclic Aromatic Hydrocarbons in Soils of Guangzhou

作者：邹子航[1,2];陈莲[1];张培珍[2];王雨菡[1,2];王振江[1,3];林森[1];唐翠明[1,3];罗国庆[1,3];钟建武[1];李智毅[1];王圆[1]

机构：[1]广东省农业科学院蚕业与农产品加工研究所,广州510640;[2]广东海洋大学电子与信息工程学院,湛江524088;[3]农业农村部华南都市农业重点实验室,广州510610

年份：2024

卷号：45

期号：2

起止页码：1015

中文期刊名：环境科学

外文期刊名：Environmental Science

收录：北大核心2023、CSTPCD、、EI(收录号：20240915648693)、Scopus、CSCD2023_2024、北大核心、CSCD、PubMed

基金：国家自然科学基金青年科学基金项目(42007379);广州市基础与应用基础研究项目(202201010672);广东省农业科学院“优秀博士”人才引进项目(R2021YJ-YB3007);广东省农业科学院青年导师制项目(R2020QD-044)。

语种：中文

中文关键词：广州市;土壤;多环芳烃(PAHs);污染;风险评估

外文关键词：Guangzhou;soil;polycyclic aromatic hydrocarbons(PAHs);pollution;risk assessment

中文摘要：为全面研究广州市土壤多环芳烃(PAHs)污染特征,采集广州市222个表层土壤样品进行分析,利用效应区间低/中值法(ERL/ERM)和(BaP)毒性当量法评价土壤PAHs污染生态风险状况,终生癌症风险增量模型评价土壤PAHs污染健康风险状况,特征化合物比值法和PMF模型对PAHs来源进行解析.结果表明,广州市表层土壤ω(∑16PAHs)为38~11115μg·kg^(-1),平均值为526μg·kg^(-1),16种多环芳烃单体均为强变异;广州存在潜在生态风险,个别采样点的PAHs污染已存在较大的生态风险,整体处于轻度污染的状态;基于健康风险评价结果表明,成年和儿童的总致癌风险的贡献率都呈现为:皮肤接触>误食土壤>呼吸摄入,儿童的健康风险大于成年,健康风险总体处于可接受范围;源解析表明广州市土壤PAHs的主要来源为:煤炭源(37.1%)>柴油源(32%)>炼焦源(17.3%)>交通排放、生物质燃烧和石化产品挥发的混合源(13.6%),整体土壤PAHs来源属于混合源.研究结果丰富了对广州市表层土壤PAHs污染特征的认识,有助于推动土壤污染防治行动的开展.

外文摘要：In order to comprehensively study the pollution characteristics of polycyclic aromatic hydrocarbons(PAHs)in soils of Guangzhou,222 topsoil samples were collected and analyzed.The ecological risk of soil PAHs pollution was evaluated using the effect interval low/median method(ERL/ERM)and the(BaP)toxicity equivalent method,and the health risk of soil PAHs pollution was evaluated using the lifelong cancer risk increment model.The source of PAHs was analyzed using the characteristic compound ratio method and PMF model.The results indicated that:the content of surface soil(Σ16PAHs)in Guangzhou was 38-11115μg·kg^(-1),with an average of 526μg·kg^(-1),and 16 types of polycyclic aromatic hydrocarbon monomers showed strong variation.There was a certain degree of ecological risk of PAHs in Guangzhou,and there was already a significant ecological risk of PAHs pollution in individual sampling points,which were generally in a state of mild pollution.Based on the results of the health risk assessment,the contribution rates of total cancer risk in both adults and children were presented as follows:skin contact>ingestion of soil>respiratory intake.The health risk of children was greater than that of adults,and the overall health risk was within an acceptable range.Source analysis showed that the main sources of soil PAHs in Guangzhou were coal(37.1%);diesel(32%);coking(17.3%);and mixed sources of traffic emissions,biomass combustion,and petrochemical product volatilization(13.6%).The overall source of soil PAHs belonged to mixed sources.The research results have enriched our understanding of the pollution status of PAHs in the surface soil of Guangzhou and are helpful in promoting soil pollution prevention and control actions.