摘要
采用碱熔再酸化分解样品,电感耦合等离子体原子发射光谱(ICP-AES)法测定高铁土壤中的铝(Al)元素。通过逐级扩大线性范围的方式,选取测定高含量Al的合适谱线;在标准中逐级加入铁基体,考察了铁基体浓度从20μg/mL到80μg/mL时对测定Al的各谱线的干扰情况。用ICP-AES法对国家标准物质GSS-1、GSS-2、GSS-3、GSS-4、GSS-5进行测定,测定值与认定值的相对误差(RE)在-0.37%~0.31%,相对标准偏差(RSD,n=5)为0.26%~0.75%,获得了满意结果。
Al in high-speed rail soil was determined by ICP-AES using alkali melting and acidification decomposition samples.By expanding the linear range step by step,the suitable spectral line for determining high content Al was selected.The interference of the iron matrix concentration from 20μg/mL to 80μg/mL on the spectral lines of Al was investigated by adding the standard iron matrix gradually.The national standard substances GSS-1,GSS-2,GSS-3,GSS-4,GSS-5 were measured with ICP-AES,and the relative error(RE)between the measured value and the determined value was-0.37%to 0.31%.RSD(n=5)is0.26%-0.75%.
作者
唐玉霜
苏卫汉
徐洪柳
邓述培
TANG Yushuang;SU Weihan;XU Hongliu;DENG Shupei(Research Institute of Hunan Provicial Nonferrous Metals Geological Exploration Bureau,Changsha,Hunan 410000,China)
出处
《中国无机分析化学》
CAS
2019年第4期40-42,共3页
Chinese Journal of Inorganic Analytical Chemistry
