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首页> 外文期刊>Environmental Science & Technology >Single Particle Inductively Coupled Plasma-Mass Spectrometry: A Performance Evaluation and Method Comparison in the Determination of Nanoparticle Size
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Single Particle Inductively Coupled Plasma-Mass Spectrometry: A Performance Evaluation and Method Comparison in the Determination of Nanoparticle Size

机译：单粒子电感耦合等离子体质谱法：纳米粒子尺寸测定中的性能评估和方法比较

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摘要

Sizing engineered nanoparticles in simple, laboratory systems is now a robust field of science; however, application of available techniques to more complex, natural systems is hindered by numerous challenges including low nanoparticle number concentrations, polydispersity from aggregation and/or dissolution, and interference from other incidental participates. A new emerging technique, single particle inductively coupled plasma-mass spectrometry (spICPMS), has the potential to address many of these analytical challenges when sizing inorganic nanoparticles in environmental matrices. However, to date, there is little beyond the initial feasibility studies that investigates the performance characteristics and validation of spICPMS as a nanoparticle sizing technique. This study compares sizing of four silver nanoparticle dispersions (nominal diameters of 40, 60, 80, and 100 nm) by spICPMS to four established sizing techniques: dynamic light scattering, differential centrifugal sedimentation, nanoparticle tracking analysis, and TEM. Results show that spICPMS is able to size silver nanoparticles, across different sizes and particle number concentrations, with accuracy similar to the other commercially available techniques. Furthermore, a novel approach to evaluating particle coincidence is presented. In addition, spICPMS size measurements were successfully performed on nanoparticles suspended in algal growth media at low concentrations. Overall, while further development of the technique is needed, spICPMS yields important advantages over other techniques when sizing nanoparticles in environmentally relevant media.
机译：现在，在简单的实验室系统中对工程化的纳米颗粒进行尺寸测定是一个强大的科学领域。然而，许多挑战阻碍了将可用技术应用到更复杂的自然系统中，这些挑战包括低纳米粒子数浓度，聚集和/或溶解引起的多分散性以及其他偶然参与的干扰。单颗粒电感耦合等离子体质谱法（spICPMS）是一种新兴技术，当在环境基质中确定无机纳米颗粒的尺寸时，有可能解决许多分析难题。但是，迄今为止，除了最初的可行性研究以外，几乎没有研究将spICPMS作为纳米颗粒施胶技术的性能特征和验证。这项研究通过spICPMS将四种银纳米颗粒分散体（标称直径分别为40、60、80和100 nm）的粒度与四种已建立的粒度技术进行了比较：动态光散射，差异离心沉降，纳米颗粒跟踪分析和TEM。结果表明，spICPMS能够以不同的大小和颗粒数浓度对银纳米颗粒进行大小确定，其准确性与其他市售技术相似。此外，提出了一种评估粒子重合的新颖方法。此外，对悬浮在藻类生长介质中的低浓度纳米颗粒成功进行了spICPMS尺寸测量。总的来说，尽管需要对该技术进行进一步的开发，但在与环境相关的介质中对纳米粒子进行尺寸测定时，spICPMS相对于其他技术具有重要的优势。

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  • 来源
    《Environmental Science & Technology》 |2012年第22期|12272-12280|共9页
  • 作者

    Heather E. Pace; Nicola J. Rogers; Chad Jarolimek; Victoria A Coleman; Evan P. Gray; Christopher P. Higgins; James F. Ranville;

  • 作者单位

    Nanosafety in the Environment, CSIRO Land and Water, Lucas Heights, NSW 2234 Australia;

    Nanosafety in the Environment, CSIRO Land and Water, Lucas Heights, NSW 2234 Australia;

    Nanosafety in the Environment, CSIRO Land and Water, Lucas Heights, NSW 2234 Australia;

    Nanometrology Section, National Measurement Institute, West Lindfield, NSW 2070 Australia;

    Civil and Environmental Engineering, Colorado School of Mines, Golden, Colorado 80401, United States;

    Civil and Environmental Engineering, Colorado School of Mines, Golden, Colorado 80401, United States;

    Chemistry and Geochemistry, Colorado School of Mines, Golden, Colorado 80401, United States;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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