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气相色谱-质谱法测定血浆中肌醇 被引量:5

Determination of myo-inositol in plasma by gas chromatography-mass spectrometry
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摘要 建立了血浆中肌醇含量的气相色谱质谱(GC-MS)测定方法。样品采用硅烷化试剂(V(三甲基氯硅烷):V(六甲基二硅胺烷):V(N,N-二甲基甲酰胺)=1:2:8)进行衍生,净化提取后采用气相色谱质谱仪进行分析。肌醇含量在20~500μg/L范围内线性关系良好,定量限(LOQ)为5μg/kg,采用LOQ,2LOQ,4LOQ的添加水平,平行测定6次,所得平均回收率分别为89.3%,86.6%和91.0%,相对标准偏差(RSD)分别为5.1%,3.7%和4.4%。 A method based on gas chromatography-mass spectrometry (GC-MS) was established for the determination of myo-inositol in plasma. The plasma sample was trimethylsilyated by silane agents ( chlorotrimethylsilane : hexamethyldisilazane : N, N-dimethylformamide = 1:2:8, V: V: V). and determinated by gas chromatography-mass spectrometry (GC/MS). The good linearity (r^2 〉 0. 9990 ) was achieved for the compound over the range of 20 -500 txg/L. The limit of quantification (LOQ) (S/N = 10) was 5μg/kg. The recoveries for the compound in plasma were 89.3% , 86.6% and 91.0% at the fortified levels of 1LOQ, 2LOQ and 4LO0. The relative standard deviation (RSD) for the eomoound was less than 6%.
出处 《分析试验室》 CAS CSCD 北大核心 2014年第6期668-670,共3页 Chinese Journal of Analysis Laboratory
基金 质检公益科研性行业专项(201310134 201410088) 国家重大科学仪器设备开发专项(2012YQ14000806) 国家质检总局科技计划项目(2013IK202)资助
关键词 血浆 肌醇 气相色谱串联质谱仪 Plasma Myo-inositol Gas chromatography-mass spectrometry(GC-MS)
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