间接原子吸收光谱法测定水样中的痕量硼

Indirect Determination of Trace Boron in Water by AAS

本文研究了四氟硼酸根与邻二氮菲银形成的络合物由 MIBK萃取后 ,用火焰原子吸收光谱法间接测定硼 ,其线性范围为 0 .0 0 2— 1μg/ m L ,检出限为 0 .0 4 1μg/ m L ,回收率为 93%— 10 1% ,且 K+ 、Na+ 等 10多种离子不干扰测定 ,本方法用于地下水中痕量硼的测定 。

An indirect AAS determination of boron in water is described.In the pH4.7,the complex formed by BF - 4 and Ag(phen) 2 + was extracted by MIBK.The trace boron was determined indirectly by AAS.A linear relationship holds in the range of 0.002-1μg boron per mL.The detection limit for boron is 0.041μg/mL,and the recovery is in the range of 93%_101%.More than ten ions such as K\++,Na\++ etc.has no inference with the determination.The method has been used to the determination of trace boron in ground water with satisfactory results.