Leaching profile of per- and polyfluoroalkyl substances from selected e-waste components and potential exposure pathways from discarded components

IF 11.3 1区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL

Journal of Hazardous Materials Pub Date : 2025-03-17 DOI:10.1016/j.jhazmat.2025.137953

Natalia Quinete, Berrin Tansel, Yelena Katsenovich, Joshua Ocheje, Maria Mendonza Manzano, Zariah Nasir

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Abstract

Improper handling and disposal of Waste Electrical and Electronic Equipment (WEEE) containing PFAS can lead to the release of these substances into the environment. In this study, we have collected and characterized PFAS leaching profiles of selected e-waste components, including keyboards, cables, monitor screens, and circuit boards, and discussed potential PFAS exposure routes during e-waste disposal by landfilling and associated environmental and health risks. The e-waste components were disassembled, separated, sorted, shredded, and grounded, and leaching experiments were conducted for 30 days to elucidate the potential release and distribution of PFAS from the e-waste components into the environment. PFAS were extracted by solid phase extraction and analyzed through liquid chromatography-mass spectrometry (LC-MS/MS) in e-waste leachate samples to investigate their occurrence and composition in the different e-waste components. The leachate from the e-waste components had 21 out of the 40 PFAS analyzed, in which the most predominant and abundant were perfluorobutanoic acid, perfluorohexanoic acid, perfluorooctanoic acid, and perfluorooctanesulfonic acid. The cables had the highest sum of PFAS in the leachate with concentrations up to 465 ng/kg. Mobilization of PFAS from e-waste components deposited in landfills through leachate requires proper management practices to protect the environment and public health.

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从选定的电子废物成分中提取的全氟烷基和多氟烷基物质的浸出概况以及从废弃成分中提取的潜在接触途径

不当处理和处置含有PFAS的废旧电子电气设备（WEEE）会导致这些物质释放到环境中。在这项研究中，我们收集并描述了选定电子废物组件（包括键盘、电缆、显示器屏幕和电路板）的PFAS浸出概况，并讨论了填埋处理电子废物过程中潜在的PFAS暴露途径以及相关的环境和健康风险。对电子垃圾组分进行拆解、分离、分类、粉碎、接地，并进行30天的浸出实验，研究电子垃圾组分中PFAS在环境中的潜在释放和分布。采用固相萃取法提取电子垃圾渗滤液样品中的PFAS，并采用液相色谱-质谱联用（LC-MS/MS）对其进行分析，研究其在电子垃圾不同组分中的存在及组成。在所分析的40种全氟磺酸中，电子废物成分的渗滤液中有21种，其中最主要和含量最多的是全氟丁酸、全氟己酸、全氟辛酸和全氟辛烷磺酸。电缆中PFAS含量最高，达到465 ng/kg。要从通过渗滤液沉积在垃圾填埋场的电子废物成分中动员全氟化砷，需要采取适当的管理做法，以保护环境和公众健康。

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来源期刊

Journal of Hazardous Materials 工程技术-工程：环境

CiteScore

25.40

自引率

5.90%

发文量

3059

审稿时长

58 days

期刊介绍： The Journal of Hazardous Materials serves as a global platform for promoting cutting-edge research in the field of Environmental Science and Engineering. Our publication features a wide range of articles, including full-length research papers, review articles, and perspectives, with the aim of enhancing our understanding of the dangers and risks associated with various materials concerning public health and the environment. It is important to note that the term "environmental contaminants" refers specifically to substances that pose hazardous effects through contamination, while excluding those that do not have such impacts on the environment or human health. Moreover, we emphasize the distinction between wastes and hazardous materials in order to provide further clarity on the scope of the journal. We have a keen interest in exploring specific compounds and microbial agents that have adverse effects on the environment.