微波消解一石墨炉原子吸收光谱法测定水基胶中的铅和砷
2013-03-13 10:03:14 益择发布廖惠云，张映。熊晓敏，庄亚东
江苏中烟工业有限责任公司技术研发中心，南京市梦都路28号210019
关键词：微波消解；石墨炉原子吸收光谱；烟用水基胶；铅；砷
摘要：建立了测定烟用水基胶中铅(Pb)和砷(As)的微波消解．石墨炉原子吸收光谱方法，并采用该方法
测定了烟用水基胶中Pb和As的含量。结果表明：在优化条件下，Pb和As分别在O～50和0～20¨g／L范
围内，工作曲线的线性相关系数、方法的检出限、相对标准偏差及回收率依次分别为0．9992和0．9995，
0．075和0．037 mg／埏，6．77％和9．86％，87．97％～92．35％和93．37％～108．92％，所测水基胶样品中Pb和As含
量分别低于5 mg／kg和l mg／埏。该方法适合于烟用水基胶中重金属Pb和As的定量分析。
中图分类号：TS761．2文献标识码：B 文章编号：1002一086l(2011)12—0034—05
Determination of Lead and Arsenic in Water_based Adhesives by Microwave Digestion—
Graphite Furnace Atomic Absorption Spectrometry
LIAO HUl-YUN，ZHANG YlNG，XIONG XIAO—MIN，and ZHUANG YA-DONG
1’echnology and Research Center of Jiangsu Tbbacco Industrial Co．，Ltd．，Nalljing 210019，China
Keywords：MicrowaVe digestion；Graphite fhmace AAs；water．based adllesiVe for cigarette；Lead；Arsenic
Abstract：A method for analyzing lead(Pb)and arsenic(As)in water-based adhesives for cigarette was
developed by microwave digestion—gr印hite fumace atomic absorption spectrometry． The results of tested
samples showed that：under the optimized conditions， in the linear ranges of O·50肛g／L(Pb)and 0-20 p g／L
(As)， the linear coef!Ficients， limits of dctection， relative standard deviations(RSDs)，and recoveries were
0．9992 and 0．9995，0．075 and O．037 mg／kg，6．77％and 9．86％，87．97％-92．35％and 93．37％一108．92％，
respectively．The contents of Pb and As were less than 5 and 1 mg／kg，respectively．The method was suitable
for the quantitative analysis of lead and arsenic in water-based adhesives for cigarette．
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