用AAS研究胡椒基荧光酮与钍(IV)的显色反应  

Study on the color reaction of piperonyl fluorone and thorium(IV) by an atomic absorption spectrophotometer

作　　者：衷明华[1] 莫春生[1] 张小亮[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：《江西有色金属》2001年第1期35-36,共2页Jiangxi Nonferrous Metals

基　　金：江西省自然科学基金资助项目!(991109)

摘　　要：应用原子吸收分光光度计对胡椒基荧光酮与钍(IV)的显色反应条件进行了研究 ,体系λmax 为560nm,ε为1.12×105L·mol -1·cm -1。钍(IV)含量在0～25μg·(25mL) -1内符合比耳定律 ,方法用于地球化学标准样中钍的测定 ,结果和参考值吻合。A spectrophotometric method of determining the color reaction of thorium(IV) with piperonyl fluorone is studied by an atomic absorption spectrophotometer.The maximum absorption of this system is at 560nm with molar absorptivity of 1.12×10 5 L·mol-1·cm-1.Beer′s law is obeyed in the range of 0～25μg(25mL)-1.The method has been applied to the determination of thorium(IV)in geochemical standard reference samples.The results obtained consistent with the certified values.

关 键 词：原子吸收分光光度计 钍 胡椒基荧光酮 显色反应 地球化学标准样 

分 类 号：P59[天文地球—地球化学] O657.32[天文地球—地质学]