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首页> 外文期刊>Analytical methods >The study of bismuth ions in drinking water at ultratrace levels by a microwave plasma torch coupled with linear ion trap mass spectrometry
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The study of bismuth ions in drinking water at ultratrace levels by a microwave plasma torch coupled with linear ion trap mass spectrometry

机译：用微波等离子体炬与线性离子捕获质谱法耦合的超速度水平饮用水中铋离子的研究

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摘要

A microwave plasma torch (MPT) can be used as a simple and low power-consumption ambient ion source and coupled with several kinds of mass spectrometers. When MPT mass spectrometry is applied for the detection of some metal elements, the metallic ions exhibit some novel features that are significantly different from those obtained by the traditional ICP mass spectrometry and may be helpful for the detection of metal elements in water. As a representative metal element of group VA, bismuth is of crucial importance, which is widely applied in modern industry, and has great potential impact on human health. Herein, we presented a novel study on the complex ions of bismuth in water using an MPT ion source coupled with a linear ion trap mass spectrometer (LTQ-MS). These complex ions were produced by the interaction of a plasma flame with wet aerosols first introduced through the central tube of the MPT torch and then into the inlet of the mass spectrometer; we also used another quadrupole mass spectrometer (QMS) for the comparison of different ionic patterns obtained from these two mass spectrometers. Moreover, the feature fragment patterns of these ions have been explained via a multistep collision-induced dissociation process. Under the optimized conditions and negative working mode of LTQ-MS, the limit of detection (LOD) of bismuth in the LTQ-MS MS2 procedure was 0.028 mu g L-1, which reached ultratrace levels. The linear range covers the interval of 0.5-50 mu g L-1, and the relative standard deviation (RSD, n = 6) alters between 1.7% and 7.0%. The standard addition recovery rates of five brands of drinking water were between 83.74% and 113.70%. These results demonstrate that the MPT MS is a promising and hopeful tool to detect metallic ions in water, which can also be applied in many other fields such as in environmental controlling, hydrogeology, water quality inspection, and food analysis. In addition, MPT MS could be used as a supplement of ICP-MS for the rapid and on-site analysis of metal ions.
机译：微波等离子体炬（MPT）可用作简单而低的功耗环境离子源，并与多种质谱仪相结合。当MPT质谱被施加用于检测某种金属元素时，金属离子表现出一些与传统ICP质谱法所获得的新特征显着不同，并且有助于检测水中的金属元素。作为VA组的代表性金属元素，铋的重要性是至关重要的，这在现代工业中广泛应用，对人类健康有很大的潜在影响。在此，我们使用与线性离子阱质谱仪（LTQ-MS）耦合的MPT离子源给出了水中铋的复合离子的新研究。这些复合离子由等离子体火焰与首先通过MPT火炬的中心管引入的湿气溶胶的相互作用产生，然后进入质谱仪的入口;我们还使用另一个四极谱质谱仪（QMS），用于比较从这两个质谱仪获得的不同离子图案。此外，已经通过多步碰撞诱导的解离过程解释了这些离子的特征片段模式。在LTQ-MS的优化条件和负工作模式下，LTQ-MS MS2过程中铋的检测极限为0.028μgL-1，其达到超速度水平。线性范围覆盖0.5-50μmg l-1的间隔，相对标准偏差（RSD，n = 6）改变1.7％和7.0％。五种品牌饮用水的标准添加回收率为83.74％和113.70％。这些结果表明，MPT MS是检测水中金属离子的有前途和有希望的工具，其也可以应用于许多其他领域，例如环境控制，水文地质，水质检查和食品分析。此外，MPT MS可以用作金属离子的快速和现场分析的ICP-MS的补充。

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  • 来源
    《Analytical methods》 |2018年第11期|共7页
  • 作者

    Xiong Xiaohong; Chen Gangsheng; Zhu Meiling; Li Yu; Yang Chushan; Xie Kechao; Zhu Zhiqiang;

  • 作者单位

    East China Univ Technol Sch Biol Chem &

    Mat Sci Nanchang 330013 Jiangxi Peoples R China;

    Shangrao Normal Univ Sch Chem &

    Environm Sci Shangrao 334001 Jiangxi Peoples R China;

    Shangrao Normal Univ Sch Chem &

    Environm Sci Shangrao 334001 Jiangxi Peoples R China;

    Shangrao Normal Univ Sch Chem &

    Environm Sci Shangrao 334001 Jiangxi Peoples R China;

    Shangrao Normal Univ Sch Chem &

    Environm Sci Shangrao 334001 Jiangxi Peoples R China;

    Shangrao Normal Univ Sch Chem &

    Environm Sci Shangrao 334001 Jiangxi Peoples R China;

    Shangrao Normal Univ Sch Chem &

    Environm Sci Shangrao 334001 Jiangxi Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 分析化学;
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