Legacy and Novel Per- and Polyfluoroalkyl Substances in Surface Soils across China: Source Tracking and Main Drivers for the Spatial Variation

IF 10.8 1区 环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL 环境科学与技术 Pub Date : 2024-10-30 DOI:10.1021/acs.est.4c05913
Danfan Wang, Xiangyu Liu, Zhefei Guo, Wenyu Shan, Zilin Yang, Yinjuan Chen, Feng Ju, Yanyan Zhang
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Abstract

China aims to actively control the contamination of globally concerning per- and polyfluoroalkyl substances (PFASs). Evaluation of the current situation can provide a critical reference point for tracking the effectiveness of ongoing progress. Herein, we present the first comprehensive assessment of the spatial variations of 20 legacy and 54 novel PFASs in Chinese background soils in 2021. Novel PFASs were extensively detected in 98.4% of the samples, with 21 species being first reported, which greatly facilitated the appointment of diverse emission sources that aligned with local industrial structures. However, legacy PFASs still dominated the ∑74PFAS profile (median 0.51 ng/g, 0.050–8.33 ng/g). The spatial heterogeneity of soil PFASs was positively driven by economic development and atmospheric deposition, enabling the establishment of predictive models to project the national distribution and temporal trends. Elevated PFAS levels were predominantly distributed in the more industrialized eastern and southern regions, as well as other coastal areas with greater precipitation. ∑74PFAS in surface soils was estimated to increase by 12.9 pg/(g year) over 2002–2021, which would continue alongside economic growth, albeit with greater contributions from novel alternatives. Our work provides comprehensive baseline and predictive data to inform policies toward PFAS control in China.

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中国地表土壤中的遗留和新型全氟和多氟烷基物质:来源追踪和空间变化的主要驱动因素
中国的目标是积极控制全球关注的全氟和多氟烷基物质(PFASs)污染。对现状的评估可以为跟踪当前进展的有效性提供一个重要的参考点。在此,我们首次全面评估了 2021 年中国本底土壤中 20 种传统和 54 种新型 PFAS 的空间变化情况。新型 PFASs 在 98.4% 的样品中被广泛检测到,其中 21 种为首次报道,这极大地促进了与当地工业结构相一致的多种排放源的确定。然而,传统的全氟辛烷磺酸仍然是∑74PFAS的主要成分(中位数为0.51纳克/克,0.050-8.33纳克/克)。经济发展和大气沉降对土壤中全氟辛烷磺酸的空间异质性有积极的推动作用,这使得建立预测模型来预测全国分布和时间趋势成为可能。PFAS 含量升高的地区主要分布在工业化程度较高的东部和南部地区,以及其他降水较多的沿海地区。据估计,2002-2021 年期间,地表土壤中的∑74PFAS 将增加 12.9 pg/(g 年),尽管新型替代品的贡献更大,但这一趋势将随着经济增长而持续。我们的工作提供了全面的基准和预测数据,为中国的全氟辛烷磺酸控制政策提供了参考。
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来源期刊
环境科学与技术
环境科学与技术 环境科学-工程:环境
CiteScore
17.50
自引率
9.60%
发文量
12359
审稿时长
2.8 months
期刊介绍: Environmental Science & Technology (ES&T) is a co-sponsored academic and technical magazine by the Hubei Provincial Environmental Protection Bureau and the Hubei Provincial Academy of Environmental Sciences. Environmental Science & Technology (ES&T) holds the status of Chinese core journals, scientific papers source journals of China, Chinese Science Citation Database source journals, and Chinese Academic Journal Comprehensive Evaluation Database source journals. This publication focuses on the academic field of environmental protection, featuring articles related to environmental protection and technical advancements.
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