采用微波消解-ICP-OES法检测活性炭中钙、镁含量,优化了 ICP-OES的测试条件.试验得出钙、镁的检出限分别为1.2μg·L-1、0.6μg·L-1,标准物质的测定值与认定值相符,相对标准偏差分别为0.66%、0.49%(n=6),样品加标回收率分别为94.0%、97.6%,能够满足活性炭中钙、镁含量的检测要求.
In this paper,the determination of calcium and magnesium in activated carbon by microwave digestion-ICP-OES.Condi-tion of ICP-OES was optimized.The detection limits of calcium and magnesium is 1.2 μg·L-1,0.6 μg·L-1,relative standard de-viation is 0.66%,0.49%(n=6),The analytical result of standard sample was in agreement with affirmation.The recovery of sample is 94.0%,97.6%.The results show that the method is feasible for the determination of calcium,magnesium in activated carbon.