纳米金的SP-ICP-MS表征及测定

doi:10.3964/j.issn.1000-0593(2018)07-2267-07

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摘要：纳米技术的不断发展需要更强大的纳米粒子表征技术。单颗粒电感耦合等离子体质谱(SP-ICP-MS)是近年来发展起来的纳米粒子检测新技术，能够快速的向研究人员提供关于纳米粒子尺寸、尺寸分布、粒子数目浓度和元素组成等信息，而且对样品干扰小。本工作探讨了SP-ICP-MS检测技术中影响金纳米粒子(Gold nanoparticles, AuNPs)测定的因素：包括仪器参数的优化，如驻留时间(Dwell time)；样品基质的影响，包括含盐、含碳基质；以及溶液中溶解的被分析元素等。测得仪器对金纳米粒子的检测限是23 nm。通过加标回收的方式，测定了实际水样太湖水、东丽湖水中金纳米粒子，加标回收率分别为97.7%和84.4%。最后，对SP-ICP-MS纳米粒子检测的现存问题进行了几点思考。

关键词：金纳米粒子；单颗粒电感耦合等离子体质谱(SP-ICP-MS)；传输效率；驻留时间；水样

Abstract：The continuous development of nanotechnology requires more powerful nanoparticle characterization techniques. Single particle inductively coupled plasma mass spectrometry (SP-ICP-MS) is a new technique for nanoparticle detection in recent years. It can quickly provide researchers with information on nanoparticle size, size distribution, particle number concentration and element composition, with small interference for samples. In this paper, the factors influencing the detection of gold nanoparticles (AuNPs)by SP-ICP-MS were discussed, which include the setting of parameters of the instrument, such as dwell time, the influence of sample matrix, including salt-containing and carbon-containingmatrix, and the dissolved analytical elements. The detection limit of gold nanoparticles was 23 nm. The recoveries of AuNPs were measured by spiked recovery. The recoveries were 97.7% and 84.4% for Taihu Lake and Dongli Lake, respectively. Finally, some existing problems were discussed in nanoparticle detection by SP-ICP-MS.

Key words：Gold nanoparticle; Single particle-inductively coupled plasma mass spectrometry (SP-ICP-MS); Transmission efficiency; Dwell time; Water sample

收稿日期: 2017-08-10 修订日期: 2018-01-22

中图分类号:

O657.6

基金资助: 教育部高校博士点专项基金项目(20130032110057)和国家(863)项目(2014AA022305)资助

通讯作者: 汪曣 E-mail: wangyan@tju.edu.cn

作者简介: 孙传强，1988年生，天津大学精密仪器与光电子工程学院博士研究生 e-mail: suncq@tju.edu.cn

引用本文:

孙传强，龚子珊，王晓俊，杨茹，蒋学慧，汪曣. 纳米金的SP-ICP-MS表征及测定[J]. 光谱学与光谱分析, 2018, 38(07): 2267-2273.
SUN Chuan-qiang, GONG Zi-shan, WANG Xiao-jun, YANG Ru, JIANG Xue-hui, WANG Yan. Characterization and Determination of Gold Nanoparticles by SP-ICP-MS. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2018, 38(07): 2267-2273.

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