| 气动雾化进样-微波等离子体炬质谱法快速测定水样中的钙离子 |
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| 引用本文： | 杨美玲,钟涛,裴妙荣,张兴磊,乐长高,王广才,陈焕文.气动雾化进样-微波等离子体炬质谱法快速测定水样中的钙离子[J].岩矿测试,2015,34(5):586-591. |
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| 作者姓名： | 杨美玲 钟涛 裴妙荣 张兴磊 乐长高 王广才 陈焕文 |
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| 作者单位： | 东华理工大学江西省质谱科学与仪器重点实验室, 江西 南昌 330013,东华理工大学江西省质谱科学与仪器重点实验室, 江西 南昌 330013;中国地质大学(北京)水资源与环境学院, 北京 100083,东华理工大学江西省质谱科学与仪器重点实验室, 江西 南昌 330013,东华理工大学江西省质谱科学与仪器重点实验室, 江西 南昌 330013,东华理工大学江西省质谱科学与仪器重点实验室, 江西 南昌 330013,中国地质大学(北京)水资源与环境学院, 北京 100083,东华理工大学江西省质谱科学与仪器重点实验室, 江西 南昌 330013 |
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| 基金项目： | 国家重大仪器设备开发专项(2011YQ14015008);江西省“赣鄱英才555工程”(赣才字[2011]1号);江西省高等学校科技落地计划项目(KJLD13051) |
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| 摘 要： | 环境水样中金属元素的分析通常采用电感耦合等离子体质谱法(ICP-MS),检出限低、线性范围宽,但仍存在使用功率高、耗气量大、分析成本高以及不适用于现场分析等不足。本文为降低金属元素分析成本,建立了微波等离子体炬(MPT)与有机质谱耦合的方式检测水样中钙离子的新方法。详细探究了载气流速和维持气流速对钙离子响应信号的影响,方法检出限为224.56 ng/L,相对标准偏差(RSD)为1.2%~9.8%,加标回收率在86.3%~110.4%之间。本方法无需样品预处理,分析速度快、灵敏度和精确度高,为环境水样中金属离子的测定提供了新途径,有望应用于金属离子的实时在线分析。
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| 关 键 词： | 水样 钙 气动雾化进样 微波等离子体炬质谱法 |
| 收稿时间： | 7/1/2015 12:00:00 AM |
| 修稿时间： | 9/5/2015 12:00:00 AM |
Rapid Determination of Calcium Ions in Water by Microwave Plasma Torch-Mass Spectrometry Coupled with Pneumatic Nebulization |
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| YANG Mei-ling,ZHONG Tao,PEI Miao-rong,ZHANG Xing-lei,LE Zhang-gao,WANG Guang-cai and CHEN Huan-wen.Rapid Determination of Calcium Ions in Water by Microwave Plasma Torch-Mass Spectrometry Coupled with Pneumatic Nebulization[J].Rock and Mineral Analysis,2015,34(5):586-591. |
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| Authors: | YANG Mei-ling ZHONG Tao PEI Miao-rong ZHANG Xing-lei LE Zhang-gao WANG Guang-cai and CHEN Huan-wen |
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| Institution: | Jiangxi Key Laboratory for Mass Spectrometry and Instrumentation, East China Institute of Technology, Nanchang 330013, China,Jiangxi Key Laboratory for Mass Spectrometry and Instrumentation, East China Institute of Technology, Nanchang 330013, China;School of Water Resources and Environment, China University of Geosciences, Beijing 100083, China,Jiangxi Key Laboratory for Mass Spectrometry and Instrumentation, East China Institute of Technology, Nanchang 330013, China,Jiangxi Key Laboratory for Mass Spectrometry and Instrumentation, East China Institute of Technology, Nanchang 330013, China,Jiangxi Key Laboratory for Mass Spectrometry and Instrumentation, East China Institute of Technology, Nanchang 330013, China,School of Water Resources and Environment, China University of Geosciences, Beijing 100083, China and Jiangxi Key Laboratory for Mass Spectrometry and Instrumentation, East China Institute of Technology, Nanchang 330013, China |
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| Abstract: | Metal element contents in water samples are commonly determined by Inductively Coupled Plasma-Mass Spectrometry (ICP-MS). ICP-MS has a low detection limit and wide linear range, but has a high power, large gas consumption, and high cost. A rapid method for the determination of calcium ions in water samples was developed by using Microwave Plasma Torch (MPT)-Mass Spectrometry coupled with pneumatic nebulization. The effects of carrier gas flow rate and the support gas flow rate on calcium response signal were investigated. The detection limit of this method is 224.56 ng/L, relative standard deviations (RSDs) are 1.2%-9.8%, and recoveries range from 86.3% to 110.4%. This method avoids sample pretreatment, and has a short analysis time, good sensitivity and precision. This method provides a new approach for the determination of metal ions in environmental water and may be used for in situ analysis in the future. |
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| Keywords: | water sample calcium pneumatic nebulization Microwave Plasma Torch-Mass Spectrometry |
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