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引用本文:   张春梅, 徐强, 杜静, 田甲申, 张华. 单颗粒-电感耦合等离子体质谱测定海水中银纳米颗粒. 分析化学, 2020, 48(9): 1260-1267. doi:  10.19756/j.issn.0253-3820.201244 [复制]

Citation:   ZHANG Chun-Mei , XU Qiang , DU Jing , TIAN Jia-Shen , ZHANG Hua . Determination of Silver Nanoparticles in Seawater by Single Particle-Inductively Coupled Plasma-Mass Spectrometry. Chinese Journal of Analytical Chemistry, 2020, 48(9): 1260-1267. doi: 10.19756/j.issn.0253-3820.201244 [复制]

单颗粒-电感耦合等离子体质谱测定海水中银纳米颗粒

通讯作者:  张华, zhanghua@dlut.edu.cn

收稿日期: 2020-04-29

基金项目: 本文系大连理工大学大型仪器设备维修基金(No.SYSWX201906)和黄淮水环境与污染防治教育部重点实验室基金项目(No.KFJJ-2017-11)资助

Determination of Silver Nanoparticles in Seawater by Single Particle-Inductively Coupled Plasma-Mass Spectrometry

Corresponding author:  ZHANG Hua , zhanghua@dlut.edu.cn

Received Date:  2020-04-29

Fund Project:  This work was supported by the Dalian University of Technology Large-scale Precise Device Test and Repair Fund (No. SYSWX201906) and the Key Laboratory of Huanghuai Water Environment and Pollution Control, Ministry of Education, China (No. KFJJ-2017-11).

建立了单颗粒-电感耦合等离子体质谱法(SP-ICP-MS)量化与表征海水中银纳米颗粒(AgNPs)的方法。筛选了SP-ICP-MS检测海水中AgNPs时的最优驻留时间,通过探究海水基质对AgNPs检测的影响,确定了海水样品稀释倍数,并利用本方法对大连市近岸海域3个站位表层海水样品中的AgNPs进行测定。结果表明,仪器最优驻留时间为100 μs,150倍稀释海水样品可提高AgNPs浓度的测定准确度。本方法测定海水中AgNPs数量浓度检出限为9.75×103 particles/mL,粒径检出限为12 nm,标称粒径50和100 nm AgNPs的平均加标回收率均大于70%。大连市近岸海域3个站位表层海水样品中均检测出AgNPs,数量浓度最大值为(2.1±0.004)×106 particles/mL,最小值为(1.1±0.01)×105 particles/mL,粒径分布在18~200 nm之间。本方法具有样品制备简单、分析速度快、颗粒物数量浓度检出限低等优点,为近岸海水中AgNPs的监测分析提供了可靠的分析方法。

关键词:   单颗粒-电感耦合等离子体质谱, 海水, 银纳米颗粒
Key words:   Single particle-inductively coupled plasma-mass spectrometry, Seawater, Silver nanoparticles
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单颗粒-电感耦合等离子体质谱测定海水中银纳米颗粒

张春梅, 徐强, 杜静, 田甲申, 张华

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