克服垃圾填埋原料液中短链基和多基物质分析的挑战:优化清理方法和干扰识别
Liping Chen1, Jiaxi Wang1, Xia Yu1
1State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resources and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China.
Journal of hazardous materials
|February 12, 2025
概括
一种新方法准确量化了垃圾填埋污水中的短链和多基物质 (PFAS). 这种使用石墨化碳黑 (GCB) 的增强清理克服了对可靠环境监测的矩阵效应.
科学领域:
- 环境化学环境化学
- 分析化学 分析化学
背景情况:
- 城市固体废物 (MSW) 填埋场液是水生环境中和多基物质 (PFAS) 的重要来源.
- 由于LC-MS/MS分析中的矩阵效应,在原始液中量化短链PFAS很困难.
研究的目的:
- 开发和验证一种增强的清洁方法,以准确确定MSW原始垃圾填埋液中的短链PFAS.
- 在液分析中识别主要干扰物质.
主要方法:
- 各种石墨化碳黑 (GCB) 吸附剂和净化序列的比较.
- 直接将GCB弹应用于原液样本进行净化.
- 液体染色学-双重质谱学 (LC-MS/MS) 用于量化.
主要成果:
- 通过GCB卡特里奇方法,实现了6种短链PFAS的高回收率 (85-113%),其相对标准偏差较低 (RSDs ≤ 7.2%).
- perfluorobutanoic 酸 (PFBA) 和 perfluoropentanoic 酸 (PFPeA) 显示了与共同提取物分离的改善.
- 鉴定出酸类物质是主要干扰物.
结论:
- 开发的GCB清理方法有效地从复杂的垃圾填埋液矩阵中提取短链PFAS.
- 这种方法可以全面确定垃圾填埋场原始液中的PFAS概况,这对于环境风险评估至关重要.
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