Determination of perfluorinated compounds in Eichhornia crassipes (Mart.) Solms using LC-MS/MS in combination with sample preparation by ultrasound-assisted extraction and solid-phase extraction

Journal of Science and Technology Pub Date : 2024-01-05 DOI:10.55401/jst.v6i4.2420

Phùng Thị Vĩ, T. Kim, Le Thanh Huyen, Pham Hung Viet, D. H. Anh

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Abstract

Fifteen perfluorinated compounds, including perfluorocarboxylic acids and perfluoroalkyl sulfonate salts (with 4 to 12 carbon atoms in their structure) in Eichhornia crassipes (Mart.) Solms samples underwent analysis using Liquid Chromatography- tandem Mass Spectrometry (LC-MS/MS). This analysis was conducted alongside sample preparation employing ultrasound-assisted extraction and solid-phase extraction. The optimization of solvent extraction involved the use of 5 ml of methyl tert-butyl ether (MTBE), 10 minutes of sonication, and three repeated extraction cycles. The weak anion exchange (WAX) cartridge was selected after evaluating and comparing the solid-phase extraction efficiencies of both WAX and C18 cartridges. The evaluated method demonstrated successful analysis of all 15 PFCs in plant samples, achieving favorable recoveries ranging from 71 to 116% (with a coefficient of variation of 1.2-6.6%). The quantification limits for these 15 PFCs in Eichhornia crassipes (Mart.) Solms samples ranged between 0.30 to 0.54 ng/g. ® 2023 Journal of Science and Technology - NTTU

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结合超声辅助萃取和固相萃取的样品制备方法，使用 LC-MS/MS 测定 Eichhornia crassipes (Mart.) Solms 中的全氟化合物

采用液相色谱-串联质谱法（LC-MS/MS）分析了 Eichhornia crassipes (Mart.) Solms 样品中的 15 种全氟化合物，包括全氟羧酸和全氟烷基磺酸盐（结构中含有 4 至 12 个碳原子）。在进行分析的同时，还采用了超声辅助萃取和固相萃取进行样品制备。优化溶剂萃取时，使用 5 毫升甲基叔丁基醚（MTBE），超声 10 分钟，重复萃取三次。在评估和比较了弱阴离子交换（WAX）滤芯和 C18 滤芯的固相萃取效率后，选择了弱阴离子交换（WAX）滤芯。所评估的方法成功地分析了植物样品中的全部 15 种 PFCs，回收率在 71% 到 116% 之间（变异系数为 1.2%-6.6%）。Eichhornia crassipes (Mart.) Solms 样品中这 15 种 PFCs 的定量限在 0.30 至 0.54 纳克/克之间。® 2023 科学与技术学报 - NTTU

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Journal of Science and Technology

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