新试剂联苯基双荧光酮分光光度法测定微量钼  

Biphenylbifluorone Spectrophotometric Determination of Microamounts of Molybdenum

作　　者：王君玲[1] 王科伟[1] 樊月琴[1] 许琳[1] 席建红[1] 孟双明[1] 王君玲 

机构地区：[1]山西大同大学化学与化工学院化学系,山西省大同市兴云街1号037009 [2]山西大同大学化学与化工学院化学系山西省大同市兴云街1号037009

出　　处：《光谱实验室》2013年第4期1836-1839,共4页Chinese Journal of Spectroscopy Laboratory

基　　金：国家自然科学基金项目[NO:21107063];山西大同大学科学研究项目[2012K9]

摘　　要：研究了非离子表面活性剂Triton X-100存在下,新试剂联苯基双荧光酮与钼的显色反应条件,结果表明:在pH为5.1的HAc-NaAc缓冲溶液中,试剂与钼形成1∶1的红色配合物,配合物的最大吸收波长为530nm处;表观摩尔吸光系数为ε=1.41×105L.mol-1.cm-1;钼含量在0—15μg/25mL范围内符合比耳定律;多数常见离子不干扰测定,方法灵敏度高,选择性好。拟定方法用于合金钢中微量钼的测定,结果满意。The chromogenic reaction conditions of a new reagent biphenylbifluorone（BPBF） with molybdenum（Ⅵ）were researched.It has been found that the reagent showed excellent analytical characteristics and offered advantages of high sensitivity,selectivity and simplicity for the color reaction.In HAc-NaAc buffer solution（pH 5.1）,molybdenum（Ⅵ） reacted with BPBF to form a 1：1 red complex in the presence of Triton X-100.It had an absorption maximum at 530 nm with a molor absorptivity of 1.41×105L·mol-1·cm-1.Beer′law was obeyed for the concentration of Mo（Ⅵ） in the range of 0—15μg/25mL.In addition,a few of foreign ions studied could be tolerated in considerable amounts.The proposed method has been applied to determine traces of molybdenum in alloy steels with satisfactory results.

关 键 词：联苯基双荧光酮 钼 分光光度法 

分 类 号：O657.32[理学—分析化学]