氢化物发生-原子荧光光谱法测定脱硫废水中的砷

On the Determination of Arsenic in Desulfurization Waste Water by Hydride Generation Atomic Fluorescence Spectrometry

研究了以稀盐酸为介质、硫脲+抗坏血酸为预还原剂,用氢化物发生-原子荧光光谱法测定脱硫废水中砷的可行性,着重优化了载液盐酸的浓度、载气流量、原子化器高度、灯电流以及硼氢化钾浓度等条件。研究发现,脱硫废水中的砷测定的最佳条件是:盐酸浓度为10%,载气流量为500mL/min,原子化器高度为6mm,灯电流为70mA,硼氢化钾浓度为20g/L。

The authors of this paper have examined the feasibility of determining the arsenic in desulfurization water by hydride generation atomic fluorescence spectrometry,with dilute hydro-chloric acid as medium and thiourea ascorbic acid as pre-reducing agent, and optimized such conditions as the concentration of hydrochloric acid as carrier liquid, the carrier gas flow, the height of atomizer, the lamp current and the concentration of potassium borohydride. The results show the best conditions are as follows, the concentration of hydrochloric acid is 10%, the carrier gas flow 500 mL/min, the height of atomizer 6 mm, the lamp current 70 mA and the concentration of potassium borohydride 20 g/L.