不同酸介质测定烟草中微量铅  

Determination of Trace Lead in Tobacco by Different Sour Medium

作　　者：赵立红[1] 刘亚丽[1] 吴玉萍[1] 

机构地区：[1]云南省烟草农业科学研究院

出　　处：《光谱实验室》2010年第6期2520-2523,共4页Chinese Journal of Spectroscopy Laboratory

摘　　要：采用硝酸-高氯酸混合酸消解样品,盐酸为介质,氢化物发生-原子荧光光谱法(HG-AFS)检测铅,对不同酸介质的浓度、样品前处理和不同烟草样品进行试验,测定香料烟、白肋烟、杀青烟、烟梗平行样品中Pb,其相对标准偏差为0.53%—4.39%;方法的检出限为0.1506μg/L;检测的线性范围为0—80.0μg/L;加标回收率为85.6%—96.9%;用茶叶标准GBW 08513和GBW 07605进行验证,测定结果与标准值相吻合。Using the nitric acid-perchloric acid mixture to resolve sample with the hydrochloric acid as the medium, the hydride generation-atomic fluorescence spectrometry（HG-AFS） was utilized to measure Pb in tobacco. The effects of the acid concentration and sample pretreatment on different tobacco samples were investigated. The relatively standard deviation was 0. 53%-4. 39% and the detection limit was 0. 1506ug/L. The linearity range was 0. 0--80. 0ug/L and the additional standard recovery was 85.6%--96.9%. The results coincided well with the standard values of tea standard GBW 08513 and GBW 07605.

关 键 词：酸介质 烟草 铅 

分 类 号：O657.31[理学—分析化学]