典型氟化工业园区周边农田-水稻系统中PFASs的赋存水平、分布规律与膳食风险评估
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1.中国科学院南京土壤研究所;2.南京师范大学环境学院;3.中国科学院大学,南京;4.山东省土壤污染防治中心

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X53

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Occurrence Levels, Distribution Patterns, and Dietary Risk Assessment of PFASs in Farmland–Rice Systems Surrounding Typical Fluorochemical Industrial Parks
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1.Institute of Soil Science,Chinese Academy of Sciences;2.College of Environmental Science, Nanjing Normal University;3.University of Chinese Academy of Sciences,Nanjing;4.Shandong Provincial Soil Pollution Prevention and Control Center

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    摘要:

    以江苏省常熟市某氟化工业园区周边农田为研究对象,系统研究农田-水稻系统中全氟及多氟烷基物质(per- and polyfluoroalkyl substances,PFASs)的赋存特征、生物富集与转运行为及其膳食风险。在园区周边5处稻田采集水稻植株、根际土壤和灌溉水样品,采用弱阴离子交换固相萃取–液相色谱串联质谱法(WAX SPE–LC–MS/MS)测定37种PFASs,基于生物积累因子(BAF)和转运系数(TF)分析其在水稻体内的迁移特征,并结合糙米和精米中PFASs浓度评估膳食风险。结果表明,PFASs在水稻、土壤和灌溉水中普遍检出,分别检出28种、22种和24种。水稻体内PFASs呈现叶>根>茎>糙米>精米的分布特征,表现出明显的器官选择性。短链全氟烷基羧酸类(PFCAs)中的PFBA、传统PFASs中的PFOA以及新型替代物GenX和F-53B为主要污染物,其中新型替代物在水稻籽粒中表现出较高的转运和富集潜力,而短链PFCAs及PFOA更易向营养器官迁移并富集。健康风险在城乡人群及不同年龄组之间均存在差异,农村居民整体健康风险高于城市居民,且2–6岁儿童为最敏感人群;糙米的膳食暴露风险高于精米。危害商(HQ)结果表明,膳食风险主要由新型替代物(GenX、F-53B)及传统PFASs(PFOA、PFOS)共同驱动。研究表明,氟化工业活动已对周边农田生态系统产生明显影响,新型替代物的农业暴露风险不容忽视,同时也应持续关注PFOA、PFOS等传统PFASs经稻米膳食途径对人体健康带来的潜在风险。

    Abstract:

    【Objective】 This study aimed to investigate the occurrence characteristics, bioaccumulation and translocation behaviors, and dietary risks of per- and polyfluoroalkyl substances (PFASs) in rice and surrounding farmland near a fluorochemical industrial park in Changshu, Jiangsu Province, China. 【Method】 Rice plants, rhizosphere soil, and irrigation water samples were collected from five paddy fields surrounding the industrial park. A total of 37 PFASs were quantified by weak anion exchange solid-phase extraction coupled with liquid chromatography–tandem mass spectrometry. Bioaccumulation factors (BAF) and translocation factors (TF) were applied to characterize the accumulation and translocation behaviors of PFASs within rice tissues. Dietary risks were further assessed based on PFAS concentrations in brown rice and white rice. 【Result】 PFASs were ubiquitously detected in rice, soil, and irrigation water, with 28, 22, and 24 PFASs identified, respectively. PFASs in rice showed a distinct organ-specific distribution pattern, following the order: leaf > root > stem > brown rice > white rice. The predominant pollutants included PFBA, PFOA, and the emerging alternatives GenX and F-53B. The emerging alternatives showed relatively high translocation and accumulation potential in rice grains, whereas short-chain PFCAs and PFOA were more likely to migrate to and accumulate in vegetative tissues. Health risks varied among residential groups and age groups, with rural residents showing higher overall risks than urban residents and children aged 2–6 years identified as the most sensitive population. Brown rice posed a higher dietary exposure risk than white rice. Hazard quotient results indicated that dietary risks were jointly driven by emerging alternatives (GenX and F-53B) and traditional PFASs (PFOA and PFOS). 【Conclusion】 Fluorochemical industrial activities have exerted clear impacts on the surrounding agricultural ecosystem. The exposure risks associated with emerging alternative PFASs should not be neglected, while the potential health risks posed by traditional PFASs such as PFOA and PFOS through rice consumption also warrant continued attention.

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景思琪,齐方杰,王欣,李冬凌,苏增博,何欢,宋昕.典型氟化工业园区周边农田-水稻系统中PFASs的赋存水平、分布规律与膳食风险评估[J].土壤学报,,[待发表]
Jing SiQi, Qi FangJie, WANG Xin, Li DongLing, Su ZengBo, He Huan, Song Xin. Occurrence Levels, Distribution Patterns, and Dietary Risk Assessment of PFASs in Farmland–Rice Systems Surrounding Typical Fluorochemical Industrial Parks[J]. Acta Pedologica Sinica,,[In Press]

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  • 收稿日期:2026-02-02
  • 最后修改日期:2026-06-27
  • 录用日期:2026-09-18
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