微波等离子体飞行时间质谱仪研制及元素检测应用研究
O657.63; 微波等离子体炬(microwave plasma torch,MPT)具有功耗低、操作方便、结构简单等优点,与质谱仪联用可快速分析元素.本文报道了一套自制的低功耗微波等离子体炬飞行时间质谱仪(MPT-TOF MS)及进样装置,并考察了维持气流速、载气流速、超截取锥电压、MPT炬焰位置及微波功率对元素检测的影响,系统地研究了该仪器的性能.结果表明,MPT-TOF MS具有耗气量少(氩维持气流速 800 mL/min、氩载气流速 400 mL/min、氮干燥气流速 2 000 mL/min)、离子源功耗低(100 W)的优势,且线性范围覆盖 5个数量级,分辨率高,锂、钠、钾、铷和...
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| Published in | 质谱学报 Vol. 45; no. 3; pp. 343 - 353 |
|---|---|
| Main Authors | , , , , |
| Format | Journal Article |
| Language | Chinese |
| Published |
四川大学机械工程学院,四川成都 610065%成都艾立本科技有限公司,四川成都 611930
01.05.2024
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1004-2997 |
| DOI | 10.7538/zpxb.2023.0115 |
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| Abstract | O657.63; 微波等离子体炬(microwave plasma torch,MPT)具有功耗低、操作方便、结构简单等优点,与质谱仪联用可快速分析元素.本文报道了一套自制的低功耗微波等离子体炬飞行时间质谱仪(MPT-TOF MS)及进样装置,并考察了维持气流速、载气流速、超截取锥电压、MPT炬焰位置及微波功率对元素检测的影响,系统地研究了该仪器的性能.结果表明,MPT-TOF MS具有耗气量少(氩维持气流速 800 mL/min、氩载气流速 400 mL/min、氮干燥气流速 2 000 mL/min)、离子源功耗低(100 W)的优势,且线性范围覆盖 5个数量级,分辨率高,锂、钠、钾、铷和铯元素的检出限分别为 0.49、3.05、1.31、0.74、0.34 μg/L.该仪器可用于盐湖中锂、钠、钾、铷及铯碱金属元素的快速检测,是电感耦合等离子体质谱(ICP-MS)元素检测方法的补充. |
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| AbstractList | O657.63; 微波等离子体炬(microwave plasma torch,MPT)具有功耗低、操作方便、结构简单等优点,与质谱仪联用可快速分析元素.本文报道了一套自制的低功耗微波等离子体炬飞行时间质谱仪(MPT-TOF MS)及进样装置,并考察了维持气流速、载气流速、超截取锥电压、MPT炬焰位置及微波功率对元素检测的影响,系统地研究了该仪器的性能.结果表明,MPT-TOF MS具有耗气量少(氩维持气流速 800 mL/min、氩载气流速 400 mL/min、氮干燥气流速 2 000 mL/min)、离子源功耗低(100 W)的优势,且线性范围覆盖 5个数量级,分辨率高,锂、钠、钾、铷和铯元素的检出限分别为 0.49、3.05、1.31、0.74、0.34 μg/L.该仪器可用于盐湖中锂、钠、钾、铷及铯碱金属元素的快速检测,是电感耦合等离子体质谱(ICP-MS)元素检测方法的补充. |
| Abstract_FL | Microwave plasma torch(MPT)has the advantages of low power consumption,convenient operation,simple structure,etc.It can be used with mass spectrometer for rapid analysis of elements.Inductively coupled plasma mass spectrometer(ICP-MS)has many advantages,such as high sensitivity and wide range of analyzed elements,but its high gas consumption and power consumption of ion source make the detection and analysis cost high.In order to effectively reduce the cost of mass spectrometry for the detection and analysis of alkali metal elements,this study reported a self-made low power-consuming microwave plasma torch time-of-flight mass spectrometer(MPT-TOF MS),including a three-cone system consisting of an ion source,a sampling cone,an interception cone,a super-interceptor cone,an ion transport lens set,a time-of-flight mass analyzer,a sample injection device,and a data acquisition system.The effects of five experimental factors,namely,maintenance gas flow rate,carrier gas flow rate,super-interception cone voltage,MPT torch flame position and microwave power,on the detection of alkali metal elements were investigated.The performance of the instrument was systematically investigated,covering the linear range,mass resolution,and isotopic accuracy of measurement.The results showed that the MPT-TOF MS has the advantages of low gas consumption(800 mL/min for argon maintenance gas,400 mL/min for argon carrier gas,and 2 000 mL/min for nitrogen drying gas),low power consumption of the ion source(100 W),and long-time stable operation when working,and the linear range of the measurement of this device covers five orders of magnitude with high mass resolution.The detection limits of lithium,sodium,potassium,rubidium and cesium are 0.49,3.05,1.31,0.74,0.34 μg/L,respectively,which are better than the results of ICP-MS.The instrument was used for the rapid detection of lithium,sodium,potassium,rubidium and cesium alkali metal elements in the salt lake.Our study showed that the MPT-TOF-MS instrument can be used as an alternative to the elemental detection of ICP-MS,and can be further developed into an on-line analytical method. |
| Author | 代渐雄 赵忠俊 左凯 郭星 段忆翔 |
| AuthorAffiliation | 四川大学机械工程学院,四川成都 610065%成都艾立本科技有限公司,四川成都 611930 |
| AuthorAffiliation_xml | – name: 四川大学机械工程学院,四川成都 610065%成都艾立本科技有限公司,四川成都 611930 |
| Author_FL | DUAN Yi-xiang GUO Xing ZUO Kai DAI Jian-xiong ZHAO Zhong-jun |
| Author_FL_xml | – sequence: 1 fullname: ZUO Kai – sequence: 2 fullname: DAI Jian-xiong – sequence: 3 fullname: ZHAO Zhong-jun – sequence: 4 fullname: GUO Xing – sequence: 5 fullname: DUAN Yi-xiang |
| Author_xml | – sequence: 1 fullname: 左凯 – sequence: 2 fullname: 代渐雄 – sequence: 3 fullname: 赵忠俊 – sequence: 4 fullname: 郭星 – sequence: 5 fullname: 段忆翔 |
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| DocumentTitle_FL | Development and Applied Research on Elemental Detection of Microwave Plasma Torch Time-of-flight Mass Spectrometer |
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| Keywords | time-of-flight mass spectrometry(TOF MS) microwave plasma torch(MPT) 元素检测 飞行时间质谱(TOF MS) elemental detection 微波等离子体炬(MPT) |
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| Title | 微波等离子体飞行时间质谱仪研制及元素检测应用研究 |
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