摘要
样品用蒸馏水溶解,电感耦合等离子体原子发射光谱法同时测定光卤石中钾、钠、钙、镁和硫酸根。选择波长为766.5,330.2,317.9,279.8,181.9nm 5条谱线依次作为测定钾、钠、钙、镁和硫的分析线。钾、钠、钙、镁和硫的方法检出限(3s)依次为0.8,1.6,0.8,0.8,2.4mg.L-1。应用此法测定了光卤石样品中5种元素的含量,回收率在97.2%～102.1%之间,相对标准偏差(n=10)小于3.5%。
Sample of carnallite was dissolved in distilled water, an aliquot of the sample solution was taken and used for ICP AES determination of contents of K, Na, Ca, Mg and SO4^2-. Spectral lines with wavelengths of 766.5, 330.2, 317.9, 279.8 and 181.9 nm were selected as analytical lines for the determination of K, Na, Ca, Mg and S respectively. Detection limits （3s） found were （mg· L^- 1） 0. 8 （K）, 1.6 （Na）, 0. 8 （Ca）, 0. 8 （Mg） and 2.4 （S）. The proposed method was used in the analysis of sample of carnallite, giving values of recovery of the 5 elements in the range of 97. 2%-102. 1% and values of RSD＇s （n=10） less than 3.5%.
出处
《理化检验（化学分册）》
CAS
CSCD
北大核心
2011年第10期1198-1199,共2页
Physical Testing and Chemical Analysis(Part B:Chemical Analysis)
