Preparation of flower-like molybdenum disulfide for solid-phase extraction of N-nitrosoamines in environmental water samples

文献类型： 外文期刊

第一作者： Li, Bingzhi

作者： Li, Bingzhi;Li, Yang;Cao, Xiaolin;Yin, Jungang;Cong, Shuang;Zhang, Ziping;Chen, Min;She, Yongxin

作者机构：

关键词： environmental water samples; flower-like molybdenum disulfide; N-nitrosamines; solid-phase extraction

期刊名称：JOURNAL OF SEPARATION SCIENCE （ 影响因子：3.614； 五年影响因子：2.904 ）

ISSN： 1615-9306

年卷期： 2022 年 45 卷 3 期

页码：

收录情况： SCI

摘要： In this paper, a flower-like molybdenum disulfide material was prepared by hydrothermal method and was first used as adsorbents in the solid-phase extraction process for enriching N-nitrosoamines. Molybdenum disulfide exhibited three-dimensional petal-like microspheres with about 500 nm in diameter. The relevant analyte extraction and elution parameters (sample volumes, solution pH, washing solvents, elution solvents, and elution volumes) were optimized to improve the solid-phase extraction efficiency. The solid-phase extraction process coupled with high-performance liquid chromatography-tandem mass spectrometry for determining N-nitrosoamines in environmental water samples was established. The limits of detection were in the range of 0.01-0.05 ng/mL. The satisfactory recoveries (68.9-106.1%) were obtained at three different spiked concentrations (2, 5, and 8 ng/mL) in water samples, and the relative standard deviations were between 1.96 and 8.38%. This proposed method not only showed high sensitivity and good reusability but also provided a new adsorbent for enriching trace N-nitrosoamines in environmental water samples.

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