摘要
本文在不渗透阻挡滤纸上,用过氧化氢将Cr(Ⅵ)还原为Cr(Ⅲ),建立了Luminol-H_2O_2-Cr(Ⅲ)体系的固体表面化学发光分析法。铬测定的线性范围为1.0～1000ng,检测限为0.13ng。与微型离子交换柱结合,快速测定了微量超基性岩和钢铁试样中的铬。
A solid surface chemiluminescence method using the antipermeate barrier as a solid substrate for the determination of chromium based on Luminol-H2O2-Cr( Ⅲ ) system is developed. The linear range for chromium is 1.0-1000 ng. The detection limit is 0.13 ng, and the relative standard diviation for 1.0 ng chromium is 5. 2%(n=ll). Cr( Ⅵ ) separated from interference ion by a micro-anion exchange resin column reduced to Cr( Ⅲ) in solid substrate by hydrogen peroxide, The method has been successfully used to determine chromium in the steel and ultrabasic rock sample.
出处
《分析化学》
SCIE
EI
CAS
CSCD
北大核心
1994年第1期71-73,共3页
Chinese Journal of Analytical Chemistry
基金
国家自然科学基金资助课题
关键词
固体
表面发光
化学发光
铬
微量
Solid surface luminescence, Chemiluminescence, Chromium, Micro-technique
