摘要
在阳离子表面活性剂CPB、TPB和CTMAB存在下,4-甲基偶氮胂-pS(4-MAsA-pS)与钍的显色反应灵敏度大大提高。在CPB存在下,ε达6.6×10~5·L·mol^(-1)·Cm^(-1),是目前测钍试剂中灵敏度最高的试剂.对水样进行钍的回收试验取得满意结果。
In the presence of cationic surfactants CPB, TPB and CTMAB,the sensitivity of the colour reaction of 4-MAsA-pS with thorium increases greatly. Especially with CPB,the system becomes the most sensitive one for thorium for the moment with molar absorbtivity of 6.6×10~5 L·mol^(-1)·cm(-1) ? The reagent has heen applied to the determination of thorium in waters with good results.
出处
《分析试验室》
CAS
CSCD
北大核心
1990年第2期30-31,共2页
Chinese Journal of Analysis Laboratory
