萃取分离金属硅中的痕量镍元素的研究

STUDY ON EXTRACTION SEPARATION OF TRACE NICKEL IN SILICON METAL

采用石墨炉原子吸收法,用APDC-DDTC-MIBK萃取分离镍,对金属硅中的痕量镍进行了分析。讨论并确定了方法的最佳测定条件,结果表明,镍的检出限为1.2ng/mL,回收率为97.1%～101.2%,相对标准偏差为0.9%～1.7%。该法准确、快速、简便,应用于金属硅中痕量镍的测定,结果满意。

Separation by APDC-DDTC-MIBK extraction,trace Nickel in Silicon metal was determined by graphite furnace atomic absorption spectrometryThe determining limit of the method is 12 ng/mLThe rate of recovery is 971% to 1012%,and its RSD is 09%～17% This method is accurate,quick-acquired and convenientThe results of determination of Nickel in Silicon metal is satisfactory