| [四(3-甲氧基-4-羟基苯基)]铽卟啉分光光度法测定微量铅 |
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| 引用本文： | 司 维,魏 东,姚振兴,赵 杰,陈国栋,赵 伟,杨 健,杜 斌.[四(3-甲氧基-4-羟基苯基)]铽卟啉分光光度法测定微量铅[J].分析测试技术与仪器,2011,17(1):11-14. |
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| 作者姓名： | 司 维 魏 东 姚振兴 赵 杰 陈国栋 赵 伟 杨 健 杜 斌 |
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| 作者单位： | 济南大学 资源与环境学院，山东 济南 250022 |
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| 基金项目： | 国家自然科学基金，山东省自然科学基金 |
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| 摘 要： | 以Meso-四(3-甲氧基-4-羟基)铽卟啉T-(3-MO-4-HP)P-Tb]为微量铅的显色剂,在pH值为4.95的HAc-NaAc缓冲溶液中,双-2-乙基己基硫代琥珀酸钠(AOT)微乳液存在下,沸水浴加热4 min显色反应完全.在最大吸收波长478 nm处,配合物的摩尔吸光系数ε为7.49×105 L/(mol.cm),铅含量在0.0～0.2μg/mL范围内符合朗伯比尔定律.方法的灵敏度高、选择性好,用于水样中痕量铅的测定,结果满意。
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| 关 键 词： | T-(3-MO-4-HP)P-Tb 铅 分光光度法 AOT微乳液 |
| 收稿时间： | 2010/12/20 0:00:00 |
| 修稿时间： | 2011/1/22 0:00:00 |
Spectrophotometric Determination of Trace Lead Using Meso-[tetra-(3-methoxy-4-hydroxyphenyl]-Tb3+ Porphyrin |
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| SI Wei,WEI Dong,YAO Zhen-xing,ZHAO Jie,CHEN Guo-dong,ZHAO Wei,YANG Jian and DU Bin.Spectrophotometric Determination of Trace Lead Using Meso-[tetra-(3-methoxy-4-hydroxyphenyl]-Tb3+ Porphyrin[J].Analysis and Testing Technology and Instruments,2011,17(1):11-14. |
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| Authors: | SI Wei WEI Dong YAO Zhen-xing ZHAO Jie CHEN Guo-dong ZHAO Wei YANG Jian and DU Bin |
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| Institution: | School of Resources and Environmental Sciences, University of Jinan, Jinan 250022, China |
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| Abstract: | A spectrophotometric determination of trace Lead using T-(3-MO-4-HP) P-Tb as a chromogenic reagent has been systematically studied.The results showed that the chromogenic reaction was complete under the following conditions: pH = 4.95 of a HAc-NaAc buffer solution,AOT microemulsion,and a heating of 4 min in a boiling water bath.At the maximum absorption wavelength of 478 nm,the molar absorption coefficient was 7.49×105 L/(mol·cm).Beer’s law was obeyed in the concentration range of 0.0~0.2 μg/mL for lead II.This method is of high sensitivity,good selectivity,and can be applied to the determination of trace lead(II) in water sample with satisfactory results. |
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| Keywords: | T-(3-MO-4-HP)P-Tb |
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