直接进样-石墨炉原子吸收光谱法测定聚丙烯丝束滤棒成型胶粘剂中的砷与铅

Determination of Arsenic and Lead in Polypropylene Tow Binder by Direct Injection GF-AAS

建立了测定聚丙烯丝束滤棒成型胶粘剂中As与Pb的稀释直接进样-石墨炉原子吸收光谱法。结果表明：样品稀释20倍、增加120℃的干燥程序能有效避免样品在石墨炉中爆沸,提高分析的精密度;As与Pb的相对标准偏差（RSD）均小于5%,回收率分别为93.5%~104.0%和94.0%~105.3%,检出限分别为0.537μg/L与0.567μg/L。该方法适用于水乳型聚丙烯丝束滤棒成型胶粘剂中As与Pb的测定。

A direct injection-graphite furnace atomic absorption spectrometry（GF-AAS） method for determining arsenic（As） and lead（Pb） in polypropylene tow binder was developed.The results showed that,twentyfold dilution and additional drying process at 120 ℃ effectively avoided sample blasting while boiling in the furnace and improved analysis precision.The recoveries of As and Pb ranged from 93.5% to 104.0% and 94.0% to 105.3%,respectively,with the relative standard deviations（RSD） of 5%.The limit of detection of As and Pb was 0.537 and 0.567 μg/L,respectively.This method is suitable for determining As and Pb in polypropylene tow binders of water emulsion.