摘要
用新配制的王水沸水溶浴样,在15％的盐酸介质中加入硫脲-抗坏血酸混合还原剂,一方面,可避免As,Sb在溶解过程中的挥发损失;另一方面,可消除Cu,Co,Ni;等金属元素的干扰。这种一次称样在同一份试液中连续测定As和Sb的方法,适用于As含量(10^(-6))大于0.5,Sb含量(10^(-6))大于0.1的化探样品的快速测定。
This paper proposes a continuous determination method of trace amountsof As and Sb by using hydride-nonchromatic dispersion atom fluorescenee.Dissolving samples through newly made aqua regia (1+1) boilimg waterbathing avoids the volatile loss of As and Sb during their dissolution. On thecondition of 15% hydrochloric acid medium mixed with mixing reducing agentof thioureaascorbic acid and eliminates disturbance of some metal elementssuch as Cu, Co and Ni.This method is suitable for the fast determinatin ofAs (>0.5(10^(-6)) ) and Sb (>0.1(10^(-6)) ) in chemical exploration samples.
