磷铁合金中镍、锰、铬的快速连续测定

Rapid Continuous Analysis of Ni,Cr in Ferro Phosphorous

磷铁合金因其特性坚固稳定,常用硫磷混酸分解或采用王水在聚四氟乙烯坩埚内加压分解。在消耗大量试剂和时间的同时,给操作带来不便。本实验方法采用在聚四氟乙烯烧杯中用逆王水快速分解试料,又在与试料相匹配的标准体系中以原子吸收光谱法连测镍、锰、铬元素。结果重现性好,节约试剂、省时、易操作,效果满意。

Because of the stability of ferro phosphorous, it should be decomposed under pressure in polytetrafluoroethylenecrucible to gether with aqua regia, it causes a large amount of reagent of time and difficulty in operation. In this experiment, the sample is decomposed quickly in crucible with upstream aqua regia, followed by continuously determination of Ni, Mn and Cr by atomic absorption spectrometry in corresponding system.