顶空气相色谱法测定烟草熏蒸后的磷化氢残留量  

Determination of phosphine residues in fumigated tobacco by headspace gas chromatography

作　　者：卢昕博[1] 边腾飞[1] 肖卫强[1] 张云莲[1] 黄健[1] 储国海[1] 金光辉[1] 丁伟[1] 周小忠[1] 周国俊[1] 

机构地区：[1]浙江中烟工业有限责任公司

出　　处：《中国烟草学报》2014年第4期7-10,共4页Acta Tabacaria Sinica

摘　　要：建立了顶空气相色谱法测定熏蒸后烟草中的痕量磷化氢。采用PoraPLOT Q毛细管色谱柱,脉冲火焰光度检测器(PFPD)P模式检测。结果显示,方法决定系数R2为0.9998,平均加标回收率为98.90%,日内重复性RSD为0.5%(n=5),日间重复性RSD为2.4%(n=5),方法检出限为0.0050μg/g,定量限为0.015μg/g。运用本方法对熏蒸后烟草进行测试,结果显示熏蒸结束3天后烟草中磷化氢残留量均小于0.0069μg/g。A method was developed by headspace gas chromatography to monitor trace phosphine residue in fumigated tobacco. PoraPLOT Q capillary column and pulsed flame photometric detector （PFPD） in P-mode were employed. Results showed thatR2 was 0.9998, average recovery of 98.90%, intra-day RSD of 0.5% （n=5）, inter-day RSD of 2.4% （n=5）, and that limit of detection and quantification of phosphine were 0.005 and 0.015μg/g, respectively. Concentration of phosphine in fumigated tobacco was less than 0.0069μg/g three days after fumigation.

关 键 词：烟草 磷化氢 气相色谱法 

分 类 号：O657.71[理学—分析化学] TS411[理学—化学]