| 某化工园区周边土壤中传统和新兴全氟化合物的赋存特征及潜在来源 |
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| 引用本文： | 丁达,宋昕,刘朝阳,许昶.某化工园区周边土壤中传统和新兴全氟化合物的赋存特征及潜在来源[J].土壤,2021,53(4):779-787. |
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| 作者姓名： | 丁达 宋昕 刘朝阳 许昶 |
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| 作者单位： | 中国科学院南京土壤研究所,中国科学院南京土壤研究所,中国科学院南京土壤研究所,中国科学院南京土壤研究所 |
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| 基金项目： | 国家自然科学基金项目（面上项目，重点项目，重大项目） |
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| 摘 要： | 在某化工园区周边采集了15个土壤样品,分析了12种全氟化合物(PFASs)的赋存水平和空间分布,再用主成分分析法和相关性分析法计算PFASs之间的相互关系,探寻具有相似来源的PFASs,最后用荷兰CSOIL模型评估了土壤PFASs的健康风险。结果表明,短链C4～C7全氟烷基羧酸(PFCAs)是本研究区土壤中主要的PFASs,特别是全氟丁酸和全氟戊酸,含量处于数十到数百ng/g水平。部分土壤点位中PFASs含量较高,可能与其离化工园区较近以及处于园区下风向有关。根据来源分析结果,工业活动可能是短链PFCAs(C4～C7)的主要来源,园区周边农业和生活源对土壤PFASs的贡献不显著。通过食入和吸入土壤颗粒及皮肤接触土壤产生的PFASs每日预计摄入量远低于国际管理机构发布的健康建议值,表明当地土壤中PFASs的人体健康风险相对较低。
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| 关 键 词： | 化工园区 土壤 全氟化合物 新兴短链全氟烷基羧酸 来源分析 健康风险 |
| 收稿时间： | 2020/6/24 0:00:00 |
| 修稿时间： | 2021/3/13 0:00:00 |
Occurrence and Possible Source of Legacy and Emerging Perfluoroalkyl Substances in Soil near a Chemical Industrial Park |
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| DING D,SONG Xin,LIU Zhaoyang,XU Chang.Occurrence and Possible Source of Legacy and Emerging Perfluoroalkyl Substances in Soil near a Chemical Industrial Park[J].Soils,2021,53(4):779-787. |
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| Authors: | DING D SONG Xin LIU Zhaoyang XU Chang |
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| Institution: | Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China;University of Chinese Academy of Sciences, Beijing 100049, China;Nanjing Institute of Environmental Science, Ministry of Ecology and Environment of the People''s Republic of China, Nanjing 210042, China |
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| Abstract: | Chemical industrial parks (CIPs) are one type of the point sources of perfluoroalkyl substances (PFASs). Most studies on PFASs in environmental media near point sources were about fluorochemical manufacturing parks, and few focused on the impact from CIPs. Moreover, current studies focused on the legacy long-chain perfluorooctane sulfonic acid (PFOS) and perfluorooctanoic acid (PFOA), while studies on the emerging short-chain alternatives were limited. In this study, fifteen soil samples were collected near a chemical industrial park in Nanjing, China. The occurrence and spatial distribution of 12 PFASs was analyzed. Principle component analysis and correlation analysis was used to calculate the relationships between individual PFAS. In addition, the potential risks to human health resulted from PFASs in the soil were evaluated by the CSOIL model. The results showed that C4-C7 short chain perfluoroalkyl carboxylic acids (PFCAs) were dominant compounds, especially perfluorobutanoic acid and perfluoropentanoic acid, which were at levels of tens to hundreds ng/g levels. The PFASs concentrations were relatively high in the soils near the CIP and those located at the downwind direction of the CIP, which was due to the close distance to the CIP and the contribution of atmospheric precipitation. It was concluded that short-chain PFCAs may resulted from the industrial activities, while the local agricultural and domestic activities did not have significant contributions to the PFAS in the soil. The estimated daily intake of PFASs in soil via ingestion, inhalation, and dermal uptake were much lower than the health-based guidelines issued by several international regulatory agencies, implying a relatively lower human health risk from the PFASs in the soil. |
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| Keywords: | Chemical industrial park Soil Perfluoroalkyl substances Emerging short chain perfluoroalkyl carboxylic acids Source apportionment Health risk |
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