关键词: 饲料 石墨炉原子吸收光谱法 微波消解 微量硒

Abstract:

Conditions of platform graphite furnace atomic absorption spectrometry linking microwave digestion were determined by optimizing solvent and conditons of microwave digestion.The results showed that HNO3+HClO4+H2O2 was the best solvent of microwave digestion.The solvent could eliminate the effect of matrix in presence of matrix modifier Mg(NO3)2 and Pd(NO3)2.The concentration of selenium and peak area was linear correlation between 5~100 ng/mL(r=0.999
2).Detection limit was 0.53 ng/mL,and the reclaim ratio w...

Key words: feeds, GFAAS, microwave digestion technique, trace selenium;