摘要
研究了石墨炉原子吸收法测定Al、B、Ba、Be、Cd、Dy、Ge、P、Se、Sm和Sn时Ca(NO_3)_2的作用。结果表明,Ca(NO_3)_2能显著提高Al、B、Be、Dy、Ge和Sn的灵敏度和灰化温度,并能降低原子化温度,增强抗干扰能力。探讨了Ca(NO_3)_2的增感机理,并测定了某些环境试样中的痕量Al、B和Be。
The effects of Ca(NO_3)_2 modifier in the determination of Al, B, Ba, Be, Cd, Dy, Ge, P, Se, Sm and Sn by GFAAS have been investigated. Ca(NO_3)_2 was found to be a very powerful modifier for the determination of Al, B, Be, Dy, Ge and Sn in GFAAS. The experimental results show that the sensitivies for Al, B, Be, Dy, Ge and Sn were enhanced, and the ashing temperatures were increased and the atomization temperatures were dicreased, and the interferences were reduced. The mechanisms of enhancement on sensitivity with modifier Ca(NO_3)_2 have been proposed. The trace Al, B, Be in some environment samples were determined with satisfactory results.
出处
《光谱学与光谱分析》
SCIE
EI
CAS
CSCD
北大核心
1991年第3期45-50,共6页
Spectroscopy and Spectral Analysis
