HGAFS法代替GFAAS法测定水中的硒

HGAFS method for the determination of selenium taking the place of GFAAS method

用氢化物发生-原子荧光分析技术(HGAFS)和石墨炉原子吸收分光光度法(GFAAS)对水样中硒的测定进行了多方面的比较。通过一系列实验,设定了最佳仪器测量条件,并从其线性范围、最低检出限、精密度、准确度、回收率等方面进行对比实验。结果表明:HGAFS比GFAAS检出限低、精密性好、回收效果好、基体干扰少,且快速方便,完全可代替GB/T15505—1995的GFAAS法,具有很好的可行性和适用性。

The hydride generation-atomic fluorescence spectrometry analysis tech nique (HGAFS) and graphite furnace atomic absorption spectrometry determining se lenium in water is compared with the GFAAS. Based on a series of experiments, th e best conditions of instrumental analysis have been made certain. The linearity range, lowest examining limit, accuracy, precision and recycle rate are compare d with other methods. The results show that the examining limit is lower, the ac curacy and the recycle rate are better, and the matrix interference is less. It works fast and conveniently. The HGAFS can take the place of GFAAS, GB/T 15505-1 995. It has good feasibility and adaptability.