AFS断续流动氢化物原子荧光光度计测定饮用水中汞

Determination of mercury in drinking water by AES intermittent tlow hysride generation atomic fluorescence photometer

介绍断续流动氢化物原子荧光光度计测定饮用水中汞的方法,研究了酸度,硼氢化钾浓度,灯电流,载气流速等对测定汞的影响。在优化的分析条件下,检测限为0.02ug/L,方法应用于水样中汞的测定,样品加标回收率在96.2%-102%之间,相对标准偏差为2.3%。方法具有操作简便,快速,灵敏度高等优点。

Amethod for the determination of mercury in drinking water by the intermittent flow hydride generation atomic fluorescence spectrometry was described. Optimum working conditions of the instrument were studied , including current of hollow cathode lamp, flow rate of carrier gas , concentration of potassium tetrahydroborate solution, acidity of sample solution, under the optimum cordition, the detection limit was 0.02ug/L. Themethod has been applied to the determination of mercury in drinkingwater. The recovery determined via adding stand- ard was in the range of 96.2% - 102%. The relative standard adviation was 2.3%. The method was simple, rapid sensitive and accurate.