【摘要】 <正>原子吸收法测定钢中微量钙的报导中,有关基体干扰的深入研究尚很少见到,所用消除干扰的方法也各有不足之处。 本文较全面地考察了钢中基体元素的干扰情况,并建立了消除干扰的方法,该法不需用分液漏斗操作及水相蒸干等处理,操作简便,结果满意。更多还原

【Abstract】 The effects of cations (Cu, Co, Ni, Mn, Mg, Cr, Al, Fe) on the ab-sorbance of calcium in AAS were examined. Interference of matrix element, Fe, on the determination of calcium was explored preliminarily,A method of suppression of matrix-interference of Fe has been developed. First, more than 90 percent of iron in steel were extracted by MIBK, then the interference caused by the remainders of both iron and MIBK in aqueous solution can be eliminated in the presence of 0.lM sul-phosalicylic acid. The procedure of the determination of calcium in steel has been proposed, and it is simple and sensitive. The results obtained for artificial samples are satisfactory.更多还原