胡椒基荧光酮测定地质样品中微量铋  

Study on Determination of Trace Amounts of Bismuth in Geological Samples with PIF

作　　者：张小亮[1] 衷明华[1] 莫春生[1] 

机构地区：[1]江西师范大学化学与生物科学学院,江西南昌330027

出　　处：《江西师范大学学报（自然科学版）》2001年第2期166-168,共3页Journal of Jiangxi Normal University(Natural Science Edition)

基　　金：江西省自然科学基金!资助项目 (99110 9)

摘　　要：研究了胡椒基荧光酮 (PIF)与Bi3+ 的显色反应 ,在微乳液存在下 ,PIF与Bi3+ 形成稳定的红色配合物 ,其最大吸收波长为 52 0nm ,铋的含量在 0～ 1μg/mL范围内符合比耳定律 ,表观摩尔吸光系数ε =1.2 5× 10 5L·mol- 1·cm- 1.方法用于地质样品中微量铋的测定 。In this paper,the colour reaction of piperonal fluorone (PIF) with Bi 3+ has been sutdied.In the presence of microemulsion,Bi 3+ reacts with PIF to form a stable red complex with an absorption peak at 520 nm.Beer's Law has been obeyed in the range of 0～1 μg/mL for Bi 3+ .The apparent molar absorptivity is 1.25×10 5 L·mol -1 ·cm -1 .It has been used for determination of trace amounts of Bi 3+ in geological samples with satisfactory results.

关 键 词：胡椒基荧光酮 铋 分光光度法 地质样品 微量分析 

分 类 号：P575.3[天文地球—矿物学] O614.532[天文地球—地质学]