摘要
以三甲基氢氧化硫为甲酯化试剂 ,正戊醇为内标 ,采用INNOWAX毛细管柱 (30m× 0 2 5mmi.d .× 0 2 5 μmd .f.)和选择离子模式 ,建立了烟草及烟草制品中乳酸的气相色谱 /质谱分析方法。该法的线性范围为 9 14 4× 10 - 3～ 12 1 92× 10 - 3mg/mL乳酸 (r =0 9986 ) ,平均回收率为 98 0 9% ,RSD为1 83%。
A method for determining lactic acid in tobacco by GC/MS was established with an Innowax capillary (column) (30m×0.25mm i.d.×0.25μm d.f.) and selective ion mode, using TMHS as a methyl esterification reagent and n_pentanol as an internal standard.The linear range of this method was from 9.144×10^(-3)mg/mL to 121.92×10^(-3)mg/mL lactic acid (r=0.9986).The average recovery of lactic acid was 98.09% and the RSD of this method was 1.83%. The contents of lactic acid in some tobacco leaves and tobacco products were determined with this method.
出处
《烟草科技》
EI
CAS
北大核心
2005年第1期27-29,共3页
Tobacco Science & Technology
