摘要
用火焰原子吸收光谱法(FAAS)测定钙,在试样溶液中加入0.25%(V/V)的氯化镧,消除化学干扰。新方法可以应用于金属锌、锌合金和锌粉中钙的测定。试样中不大于0.02%的镉、钴、铜、铁、镍;0.1%的铋、铟、铅;0.2%的铝和1%的汞不干扰测定。钙测量范围为0.002%~0.1%。
The determination of the content of calcium by flame atomic absorption sp ectrometry(FAAS )was discussed.Addition of LaCI 3 ·7H 2 O at concentration of 0.25%(V /V)in the solution can eliminate the chemical interferences.The new method has been applied to determine calcium in zinc,zinc alloy and zinc powder.0.02%Cd,Co,Cu,Fe,Ni;0.1%Bi,In,Pb;0.2%Al and 1%Hg in the samp le will not in-terfere determination.The determi ne range of the method is 0.002%~0.1%calcium.
出处
《电池工业》
CAS
2002年第5期279-281,共3页
Chinese Battery Industry