Determination of As, Hg and Pb in Pyrotechnic Compositions by ICP-AES

In order to ban the use of arsenides,mercurides and lead compounds in pyrotechnic compositions,the amounts of As, Hg and Pb were simultaneously determined by ICP-AES at wavelengths 189.042, 194.227, 220.353 nm respectively,after these were pretreated by alcohol, acetone and nitric acid. The average recoveries were 98.5%~101% with relative standard deviations of 1.97%~2.71%. The method has the merits of convenient operation, rapid, low detection limit, few interference and reliable results.