光诱导蒸气发生-高效液相色谱-电感耦合等离子体质谱联用测定汞形态
以紫外光诱导化学蒸气（UV-CVG）发生为接口,建立了高效液相色谱与电感耦合等离子体质谱联用测定无机汞、甲基汞的分析方法。对色谱条件、紫外光化学反应还原剂甲酸浓度、紫外光化学反应管长度等系统操作条件进行了优化。在优化的系统条件下,4μg/L无机汞和甲基汞的色谱峰高的相对标准偏差（RSD,n=11）分别为0.72%和0.66%;无机汞和甲基汞的线性范围为0.1～10μg/L,100μL进样检出限分别为0.011和0.0093μg/L。用DORM-2角鲨鱼肉参考物质验证了方法的准确性,测试结果与推荐值吻合;对沼泽湿地水样中无机汞和甲基汞的加标回收率分别在99%～106%和94%～110%范围内。...
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| Published in | 分析化学 Vol. 40; no. 1; pp. 169 - 172 |
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| Main Author | |
| Format | Journal Article |
| Language | Chinese |
| Published |
成都理工大学核技术与自动化工程学院,成都,610059%成都理工大学材料与化学化工学院 ,成都,610059
2012
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| Subjects | |
| Online Access | Get full text |
| ISSN | 0253-3820 |
| DOI | 10.3724/SP.J.1096.2012.10474 |
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| Summary: | 以紫外光诱导化学蒸气（UV-CVG）发生为接口,建立了高效液相色谱与电感耦合等离子体质谱联用测定无机汞、甲基汞的分析方法。对色谱条件、紫外光化学反应还原剂甲酸浓度、紫外光化学反应管长度等系统操作条件进行了优化。在优化的系统条件下,4μg/L无机汞和甲基汞的色谱峰高的相对标准偏差（RSD,n=11）分别为0.72%和0.66%;无机汞和甲基汞的线性范围为0.1～10μg/L,100μL进样检出限分别为0.011和0.0093μg/L。用DORM-2角鲨鱼肉参考物质验证了方法的准确性,测试结果与推荐值吻合;对沼泽湿地水样中无机汞和甲基汞的加标回收率分别在99%～106%和94%～110%范围内。 |
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| Bibliography: | XU Jin-Yong,WANG Tong,CHEN Du-Jun,YE Long-Hui,NI Shi-Jun （College of Applied Nuclear Technology and Automation Engineering, Chengdu University of Technology,Chengdu 610059） 2（College of Materials and Chemistry ＆ Chemical Engineering, Chengdu University of Technology,Chengdu 610059） A method for the determination of inorganic mercury（iHg） and methylmercury（MeHg） was developed by HPLC-ICP-MS with a UV-induced chemical vapor generation interface.The operational conditions of system such as mobile phase of liquid chromatography,formic acid concentration of UV-induced reaction reducing agent,length of UV reaction tube and so on were optimized.Under the optimized conditions,the relative standard deviations（RSD,n=7） of the chromatography peak high for the determination of iHg and MeHg are 0.72% and 0.66%,respectively.The linear range for both the mercury species is between 0.1 and 10 μg/L,while the detection limits are 0.011 and 0.0093 μg/L,respectively.Certified reference material（DORM-2 dogfish muscle） was used to |
| ISSN: | 0253-3820 |
| DOI: | 10.3724/SP.J.1096.2012.10474 |