敞开式离子化质谱(ambient ionization mass spectrometry,AIMS)技术因其具有实时、原位分析等特点,已成为质谱学领域的一个研究热点。实时直接质谱分析(direct analysis in real-time mass spectrometry,DART-MS)作为一种典型的直接质...敞开式离子化质谱(ambient ionization mass spectrometry,AIMS)技术因其具有实时、原位分析等特点,已成为质谱学领域的一个研究热点。实时直接质谱分析(direct analysis in real-time mass spectrometry,DART-MS)作为一种典型的直接质谱分析技术,可在开放环境中实现样品的快速分析,具有性能稳定、操作简单、分析快速等优点,自2005年被报道以来,便引起了广泛的关注。本文从DART电离源的工作原理以及近2年DART-MS在环境分析、食品药品安全、生物医学分析以及公共安全等领域的应用研究进行了评述,并对其发展方向进行了展望。展开更多
An electrochemical mass spectrometry technique was developed based on a homemade analytical device for sequential analysis of the heavy metals with various speciations in the scales.Four speciations(e.g.,water-soluble...An electrochemical mass spectrometry technique was developed based on a homemade analytical device for sequential analysis of the heavy metals with various speciations in the scales.Four speciations(e.g.,water-soluble speciation,organic speciation,indissoluble speciation and elemental speciation)of heavy metals are sequentially extracted by H_(2)O,CH_(3)OH,EDTA-2Na and electrolysis for online electrospray ionization mass spectrometry(ESI-MS)detection.The method takes significant advantages,such as requiring no tedious offline sample pretreatment,high speed of analysis(20 min),high throughput(multi-metals),good sensitivity(0.5µg/L)and rich chemical information(four speciations).As a result,the rapid comprehensive characterization of four speciations of Pb,Ni,Cu,Zn,Fe,Ba,Mn,Cr and Ca in water pipe scales has been qualitatively achieved.It demonstrated that the present method is a powerful tool for the effective assessment of potential hazards in drinking water,which provides a new analytical idea for evaluating water quality.展开更多
文摘敞开式离子化质谱(ambient ionization mass spectrometry,AIMS)技术因其具有实时、原位分析等特点,已成为质谱学领域的一个研究热点。实时直接质谱分析(direct analysis in real-time mass spectrometry,DART-MS)作为一种典型的直接质谱分析技术,可在开放环境中实现样品的快速分析,具有性能稳定、操作简单、分析快速等优点,自2005年被报道以来,便引起了广泛的关注。本文从DART电离源的工作原理以及近2年DART-MS在环境分析、食品药品安全、生物医学分析以及公共安全等领域的应用研究进行了评述,并对其发展方向进行了展望。
基金This work was supported by the National Natural Science Foundation of China(Nos.21727812,21705016)the Doctoral Start-up Fund of East China University of Technology,China(No.DHBK2017115)the Open Fund of Jiangxi Provincial Key Laboratory of Mass Spectrometry Science and Instrumentation,China(No.JXMS202117).
文摘An electrochemical mass spectrometry technique was developed based on a homemade analytical device for sequential analysis of the heavy metals with various speciations in the scales.Four speciations(e.g.,water-soluble speciation,organic speciation,indissoluble speciation and elemental speciation)of heavy metals are sequentially extracted by H_(2)O,CH_(3)OH,EDTA-2Na and electrolysis for online electrospray ionization mass spectrometry(ESI-MS)detection.The method takes significant advantages,such as requiring no tedious offline sample pretreatment,high speed of analysis(20 min),high throughput(multi-metals),good sensitivity(0.5µg/L)and rich chemical information(four speciations).As a result,the rapid comprehensive characterization of four speciations of Pb,Ni,Cu,Zn,Fe,Ba,Mn,Cr and Ca in water pipe scales has been qualitatively achieved.It demonstrated that the present method is a powerful tool for the effective assessment of potential hazards in drinking water,which provides a new analytical idea for evaluating water quality.
