摘要
介绍了用 5 [2 ( 4 氯苯酚 )偶氮 ] 若丹宁光度法测定微量钼 的方法 ,在H2 SO4 和H3PO4 介质中 ,在VC和表面活性剂溴化十六烷基三甲基铵 (CTMAB)存在下 ,钼与显色剂形成 1∶2桔红色络合物 ,最大吸收波长为 462nm ,表观摩尔吸光系数为 5 0 6× 10 5,于 2 5mL溶液中 ,钼 量在 0 5～ 5 μg范围内符合比尔定律。
A spectrophotometric method for determination of micro amounts of molybdenum with the reagent 5 [2 (4 chlorophenol)azo] rhodanine is described In H 2SO 4 and H 3PO 4 medium,molybdenum reacts with the reagent in the presence of CTMAB to form a 1∶2 orange complex,which has an absorption maximum at 462nm with a molar absorptivity of 5 06×10 5L·mol -1 ·cm -1 Beer's law is obeyed in the range of 0 5-5μg of molybdenum in 25mL of solution The method has been applied to the determination of micro amounts of molybdenum in human hair
出处
《冶金分析》
CAS
CSCD
北大核心
2003年第4期34-35,共2页
Metallurgical Analysis
