冷原子荧光光谱法测定水中痕量汞

Determination of Trace Mercury in Water by Cold-Atomic Fluoresence Spectrometry

中文关键词:  冷原子荧光光谱法  汞  水  痕量

英文关键词:cold-atomic fluorescence spectrometry  mercury  water  trace

中文摘要:

      采用冷原子荧光光谱法分析水中的汞,详细研究了灯电流、载气流速、原子化器高度、盐酸浓度和硼氢化钾浓度等因素对检测的影响.在最佳条件下,汞含量在0~10.00μg/L的浓度范围内与荧光强度呈现良好线性关系,相关系数为0.999 5,检出限为0.002 9μg/L,相对标准偏差小于1.98%,加标回收率在90.0%~99.6%之间.方法具有操作简单、快速、基体干扰少、灵敏度高和重现性好等优点.

英文摘要:

      Cold-Atomic fluorescence spectrometry method is used to analyze Mercury(Hg) in water.The instrumental parameters and the conditions of measurement such as the concentration of hydrochloric acid and potassium borohydride are investigated in detail.Under the optimum conditions,Hg has good linearity in the ranges of 0~10.00 μg/L with correlation coefficients above 0.9995.The detection limit is 0.002 9 μg/L,and RSD is less than 1.98%.The recovery obtained by standard addition method is in the ranges of 90.0%~99.6%.The method is simple,rapid,less noise,high sensitivity and reproducible.The method has been applied to determination of trace amounts of Hg in water.