摘要
在稀硝酸介质中,不需分离其它干扰杂质,用原子吸收分光光度法直接测定中、低合金钢中的铬.该法测定铬的特征浓度(灵敏度)为0.08μg/mL,铬含量在0～6μg/mL内与吸光度线性相关,检出限为0.003μg/mL.该法测定速度快,与标准法测定结果的相对误差在±4.6%以内,回收率为97%～115%.
A rapid and direct method for determination of chrome in medium/lower alloy steel by AAS in dilute nitric acid medium without separation was reported. The characteristic concentration （sensitivity） for determination of chrome by this method was 0.08 μg/mL. The absorbance was linear with the amount of chrome in the range of 0 - 6μg/mL. The detection limit for chrome was 0.003μg/mL. The relative error of test results for actual steel samples between this method and the standard method were within ± 4.6%, and the recoveries were in the range of 97% - 115%.
出处
《化学分析计量》
CAS
2005年第6期51-52,共2页
Chemical Analysis And Meterage
关键词
铬
原子吸收分光光度法
钢铁
chrome, atomic absorption spectrophotometry, steel
