Rapid detection and speciation of illicit drugs via a thin-film microextraction approach for wastewater-based epidemiology study

色谱法 检出限 废水 化学 样品制备 气相色谱-质谱法 甲喹酮 环境化学 质谱法 环境科学 环境工程
作者
Xinlv Chen,Shuqin Liu,Ruifen Jiang,Tiangang Luan,Gangfeng Ouyang
出处
期刊:Science of The Total Environment [Elsevier BV]
卷期号:842: 156888-156888 被引量:7
标识
DOI:10.1016/j.scitotenv.2022.156888
摘要

High detection frequency of illicit drugs in water samples urges the development of rapid detection method for wastewater-based epidemiology (WBE) study. Here, we first developed a fast, convenient, and cost-effective method by combining thin-film microextraction (TFME) with gas chromatography-mass spectrometry (GC-MS) for sensing illicit drugs in wastewater sample. A divinylbenzene particle-loaded membrane was prepared by dip coating on a copper mesh. The sampling conditions of three illicit drugs were optimized and the performance of the proposed method was evaluated. The limit of detection was 5.5 2.0, and 1.1 ng L-1 for methamphetamine (MAMP), ketamine (KET), and methaqualone (MEQA), respectively, with acceptable precision (< 6.1 % for membrane to membrane reproducibility) and recovery from influent water (95 % - 111 %). Then, the proposed method was applied to study the occurrence and distribution of the target compounds in a wastewater treatment plant. The presence of methamphetamine, ketamine, and methaqualone was confirmed and their concentrations in the influent sample were 57 ± 8, 40 ± 4, and 75 ± 2 ng L-1, respectively. The speciation of the target compounds in different ponds was also investigated. Results showed that the content of organic matter and the pH of the sample significantly affected the binding state of the compounds. This work provides an efficient and accurate analytical protocol for WBE investigation of illicit drugs.
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