Successive determination of Co、Fe、Cu、Ca、Mn、Zn、Mg and Pb in nickel Powder by standard addition FAAS

After dissolved by nitric acid, several same samples were added into the eight elements' standard solutions increased by concentration degrees respectively, furthermore SrCl2 used as release agent were added into the system, then the contents of cobalt, iron, copper, calcium, manganese, zinc, magnesium, and lead were determined by air-acetylene fire atomic absorption spectrometry(FAAS) . The optimum determination conditions have been established. The interference tests for other elements that probably exist have been conducted. The rate of recovery is 98.4 % - 102.6 % , the relative standard deviation is 1.2 % - 2. 7 % .