| 羧基化碳纳米管在荧光酮光度法测定铅中的应用 |
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| 引用本文： | 毛蕾蕾,王宗花,邢琳琳,闫永臣,陈悦.羧基化碳纳米管在荧光酮光度法测定铅中的应用[J].高等学校化学学报,2006,27(5):830-833. |
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| 作者姓名： | 毛蕾蕾 王宗花 邢琳琳 闫永臣 陈悦 |
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| 作者单位： | 青岛大学化工学院化学系,青岛,266071 |
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| 基金项目： | 中国科学院资助项目;山东省青年科学家科研奖励基金 |
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| 摘 要： | 研究了羧基化碳纳米管(c-MWNT)存在下二溴羟基苯基荧光酮(DBH-PF)与铅离子的显色反应. 结果表明, 在pH=9.4～10.0的硼酸盐缓冲介质中, 二溴羟基苯基荧光酮和铅离子在羧基化碳纳米管的存在下能形成稳定的浅红色配合物, 最大吸收波长为558 nm, 表观摩尔吸光系数为5.62×104 L·mol-1·cm-1. 当含量在(1～50 μg)/25 mL范围内时, 满足朗伯-比尔定律.
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| 关 键 词： | 碳纳米管 荧光酮 光度法 铅 |
| 文章编号： | 0251-0790（2006）05-0830-04 |
| 收稿时间： | 08 16 2005 12:00AM |
| 修稿时间： | 2005-08-16 |
Application of Carboxylic Carbon Nanotubes to the Spectrophotometric Determination of Lead with DBH-PF |
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| MAO Lei-Lei,WANG Zong-Hua,XING Lin-Lin,YAN Yong-Chen,CHEN Yue.Application of Carboxylic Carbon Nanotubes to the Spectrophotometric Determination of Lead with DBH-PF[J].Chemical Research In Chinese Universities,2006,27(5):830-833. |
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| Authors: | MAO Lei-Lei WANG Zong-Hua XING Lin-Lin YAN Yong-Chen CHEN Yue |
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| Institution: | Department of Chemistry, College of Chemical Engineering, Qingdao University, Qingdao 266071, China |
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| Abstract: | Carboxylic carbon nanotubes were used in the chromogenic reaction for the determination of lead with 2,3,7-trihydroxy-9-(3,5-dibromo-4-hydroxyphenyl)flunrone(DBH-PF). A red complex was formed in the borate buffer solution in a pH range of 9.4-10.0 The maximum absorption of the complex appeared at 558.0 nm, and the apparent molar absorptivity was 5.62×104 L·mol-1·cm-1. The linearity of the Pb2+ in mass concentration ranges from 1 μg to 50 μg per 25 mL of solution with a correlation coefficient of 0.999 6. This method has been applied to the determination of trace lead in cosmetics successfully. |
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| Keywords: | Carboxylic carbon nanotubes DBH-PF Spectrophotometry Lead |
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