胶束增敏分光光度法测定高纯石英粉中微量铝

Determination of Microamount Aluminum in High-Purity Quartz Powders by Micelle-Sensitized Spectrophotometry

选择阳离子表面活性剂氯化十六烷基吡啶(CPC)作为铝与铬天青S(CAS)显色体系的增敏剂,利用胶束增敏分光光度法测定高纯石英粉中微量铝,方法回收率为98%—104%,相对标准偏差低于2.7%(n=6)。

The microamount aluminum in high-purity quartz powders was determined by micellesensitized spectrophotometry with cetylpyridnium chloride （CPC） as a sensitivity promotor and chromium azure S（CAS） as a color reagent. The relative standard deviation is less than 2. 7 % （n= 6） with the recoveries of 98%-104%.