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| LC-ICP-MS联机技术与同位素稀释质谱法精确测定小麦粉中硒代蛋氨酸 | |
| 引用本文： | 韦超,王军,周原晶,贺欣宇,刘丽丽,陈登云. LC-ICP-MS联机技术与同位素稀释质谱法精确测定小麦粉中硒代蛋氨酸[J]. 质谱学报, 2008, 29(Z1): 33-34 |
| 作者姓名： | 韦超 王军 周原晶 贺欣宇 刘丽丽 陈登云 |
| 作者单位： | 1. 中国计量科学研究院，北京 100013；2. 北京化工大学，北京 100013； 3. 安捷伦科技有限公司，北京 100022 |
| 摘 要： | |
Accurate Determination of Selenomethionine in Wheat Flourby Species-Specific Isotope Dilution-LC-ICPMS |
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| WEIChao,WANGJun,ZHOUYuan-jing,HEXin-yu,LIULi-li,CHENDeng-yun. Accurate Determination of Selenomethionine in Wheat Flourby Species-Specific Isotope Dilution-LC-ICPMS[J]. Journal of Chinese Mass Spectrometry Society, 2008, 29(Z1): 33-34 | |
| Authors: | WEIChao WANGJun ZHOUYuan-jing HEXin-yu LIULi-li CHENDeng-yun |
| Affiliation: | 1. National Institute of Metrology, Beijing 100013, China; 2. Beijing Chemistry Engeering University,Beijing 100013, China; 3. Agilent Tech. Ltd., Beijing 100022, China |
| Abstract: | The precise determination of selenomethionine (SeMet) in wheat flour has been performed by species specific isotope dilution mass spectrometric analysis (IDMS) using an inductively coupled plasma mass spectrometer as detector after liquid chromatography (LC-ICP-MS). A labeled 76SeMet species-specific isotope enriched spike solution was used for these determinations. The experiment procedure included spiking, extraction, and a simultaneous separation and detection procedure. The method gave yield to good precision (＜2%). The accuracy of the method has been validated on the certified reference materials. The result obtained was in good agreement with the certified reference value. And this method was used to do the international comparison CCQM-K60. |
| Keywords: | liquid-chromatography ICP-MS speciationanalysis selenium selenomethionine |
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