Automatic magnetic solid phase extraction for rapid and high-throughput determination of neonicotinoid insecticides and their metabolites in serum, breast milk and urine samples†

IF 2.7 3区 化学 Q2 CHEMISTRY, ANALYTICAL
Kaiqin Huang, Jing Yi, Guocheng Liu, Yangyang Liu, Kaixin Jiang, Zhuowen Li, Yanji Qu, Meiqing Lin and Shengtao Ma
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Abstract

In this study, an automatic magnetic solid phase extraction method was developed to determine six parent neonicotinoids (NEOs) and three of their metabolites in breast milk, serum and urine samples. As key extraction parameters, the sorbent amount, washing solvent and elution solvent were optimized to 4 mg of HLB packing magnetic sorbent, pure water and acetonitrile, respectively. Recoveries of the analytes ranged between 81% and 121% for bovine milk samples, 64% and 122% for fetal bovine serum samples and 81% and 109% for pooled urine samples, with RSDs of <20%. The intra-day and inter-day variations were 2.7–14.9% and 1.2–13.4%, respectively, for all analytes in the three matrices. The limit of quantitation ranged from 0.002–0.05 ng mL−1, 0.002–0.06 ng mL−1 and 0.012–0.348 ng mL−1 for the target compounds in bovine milk, fetal bovine serum and pooled urine samples, respectively. The validated method was successfully applied for biomonitoring of NEOs in real samples. Notably, the developed method required only 200 μL of sample and 1.4 mL of organic solvent to prepare a batch of 32 samples in less than 30 min, making it suitable for large-scale epidemiological biomonitoring of human exposure to NEOs or equivalent agrochemicals.

Abstract Image

自动磁固相萃取法快速高通量测定血清、母乳和尿液中新烟碱类杀虫剂及其代谢物
本研究建立了一种自动磁固相萃取法,用于测定母乳、血清和尿液样品中的6种新烟碱类(NEOs)及其3种代谢物。将吸附剂用量、洗涤溶剂和洗脱溶剂分别优化为4 mg HLB填料磁性吸附剂、纯水和乙腈作为提取的关键参数。牛乳、胎牛血清和混合尿液中目标化合物的加标回收率分别为81% ~ 121%、64% ~ 122%和81% ~ 109%,rsd分别为- 1,0.002 ~ 0.06 ng mL-1和0.012 ~ 0.348 ng mL-1。该方法已成功应用于实际样品中近地天体的生物监测。值得注意的是,该方法只需要200 μL的样品和1.4 mL的有机溶剂,即可在不到30 min的时间内制备一批32份样品,适用于人体暴露于neo或等效农用化学品的大规模流行病学生物监测。
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来源期刊
Analytical Methods
Analytical Methods CHEMISTRY, ANALYTICAL-FOOD SCIENCE & TECHNOLOGY
CiteScore
5.10
自引率
3.20%
发文量
569
审稿时长
1.8 months
期刊介绍: Early applied demonstrations of new analytical methods with clear societal impact
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