碳纳米管-苯基荧光酮分光光度新体系测定锰  

Spectrophotometric Determination of Manganese with Phenyl Fluorone in the Present of Carbon Nanotubes

作　　者：陈相康[1] 王宗花[1] 张菲菲[1] 田玲[1] 

机构地区：[1]国家培育基地-纤维新材料与现代纺织重点实验室青岛大学,山东青岛266071

出　　处：《青岛大学学报（工程技术版）》2007年第4期35-38,共4页Journal of Qingdao University(Engineering & Technology Edition)

基　　金：国家自然科学基金资助项目(20475029);山东省优秀中青年科学家科研奖励基金资助项目(2004BS04008)

摘　　要：研究了碳纳米管（CNT）作为新型添加剂在苯基荧光酮测定锰的分光体系中的增敏作用。结果表明，CNT与苯基荧光酮（PF）显色体系能够形成稳定的紫色络合物，最大吸收波长为593nm。锰质量分数在1～14μg／25mL范围内符合比耳定律，回归方程A=0．0346＋0．0621C，表观摩尔吸光系数ε=8．53×10^4L·mol^-1cm，R=0．9984。在实验确定的最佳条件下，对自来水中的锰进行了测定，有较高的准确度。Carbon nanotubes（CNT） were used as an additive in the chromogenic reaction for the determination of Manganese with phenyl fluorone （PF）. The results showed that a purple complex was formed in the presence of CNT in the borate buffer solution. The maximum absorption of the complex appeared at 593 nm, and the apparent molar absorptivity was 8.53×10^4 L · mol^-1 cm^-1. Regression calibration equation is A=-0.034 6＋0. 0621 C over the concentration rang from 1 to 14μg per 25 mL of solutions with correlation coefficient of 0. 998 4. This method has been applied to the determination of trace manganese in running water successfully.

关 键 词：碳纳米管 荧光酮 锰 分光光度法 

分 类 号：O657.3[理学—分析化学]