流动注射-氢化物发生原子吸收光谱法测定香烟接装纸中的痕量砷

Determination of As in Tipping Paper by Flow Injection-Hydride Generation Atomic Absorption Spectrometry

将流动注射-氢化物发生和原子吸收光谱法有机的结合起来，探讨了流动注射-氢化物发生-原子吸收光谱法测定香烟接装纸中砷的最佳条件。样品经消解后，加入还原剂，使五价砷还原为三价，在盐酸介质中和硼氢化钾反应生成砷化氢，进入电热石英管原子化测定。检测结果相对标准偏差小于5％，加标回收率为96．7％～104％，方法检出限为0．18μg／L。

A method for determination of As in the cigarette tipping paper by using flow injection-hydride generation atomic absorption spectrometry （FI-HG-AAS） was proposed. The As（Ⅴ ） in the digested sample was firstly reduced to As（ Ⅲ ） and then was reacted with KBH4 in hydrochloric acid to produce AsH3 for AAS determination. The relative standard deviation （RSD） was less than 5%, the recoveries was in the range of 96.7%-104%, and the detection limit for As was 0.18 μg/L.