氢化物原子荧光法与石墨炉原子吸收法测定微量镉

Determination of minute quantity codmium generation by AFS and GFAS

目的:在镉的测定方面比较不同仪器的性能。方法:氢化物原子荧光法和石墨炉原子吸收法。结果:氢化物原子荧光法和石墨炉原子吸收法的检出限为5.81 ng/L和3.78 ng/L,相对标准偏差为1.31%和4.12%,回收率为94.0%～106.0%和95.5%～104.5%。结论:在微量镉的测定方面,氢化物原子荧光法是一种比较好的方法。

Objective：To compare the capability of differen appartus in determination of minute quantity codmium. Methods： Hydride generation AFS and GFAS were used. Results：The detection limit of hydride generation AFS and GFAS was 5.81 ng/L and 3.78 ng/L, the relative deviation （RSD） 1.31 and 4. 12. Recoveries of standard additions were in the rang of 94. 0% - 106. 0% and 95.5% - 104. 5%. Conclusion：The AFS is a better method in determination of minute codmium.