| 4-(6-甲氧基-8-喹啉偶氮)-邻苯二酚与Cd(Ⅱ)分光光度研究与应用 |
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| 引用本文： | 李善忠,陈强军,丁晓杰. 4-(6-甲氧基-8-喹啉偶氮)-邻苯二酚与Cd(Ⅱ)分光光度研究与应用[J]. 淮海工学院学报, 2010, 19(2): 49-51 |
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| 作者姓名： | 李善忠 陈强军 丁晓杰 |
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| 作者单位： | 淮海工学院化学工程学院,江苏,连云港,222005 |
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| 基金项目： | 淮海工学院校内科研项目 |
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| 摘 要： | 研究了4-(6-甲氧基-8-喹啉偶氮)-邻苯二酚与Cd(Ⅱ)的显色反应及光度法测定痕量镉的新方法。在OP存在下,碳酸钠-碳酸氢钠缓冲介质中,该试剂与Cd(Ⅱ)生成稳定的带负电荷的1∶2的配合物。其最大吸收波长为565nm,表观摩尔吸光系数为4.68×104L/(mol.cm)。在0.1～1.0μg/mL范围内服从朗伯-比尔定律。显色反应具有良好的选择性,直接应用于环境水样中痕量镉的测定,结果满意。
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| 关 键 词： | 4-（6-甲氧基-8-喹啉偶氮）-邻苯二酚 分光光度法 镉 |
Study and Application of the Spectrophotometric Determination of Cadmium with MQAPC |
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| LI Shan-zhong,CHEN Qiang-jun,DING Xiao-jie. Study and Application of the Spectrophotometric Determination of Cadmium with MQAPC[J]. Journal of Huaihai Institute of Technology:Natural Sciences Edition, 2010, 19(2): 49-51 |
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| Authors: | LI Shan-zhong CHEN Qiang-jun DING Xiao-jie |
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| Affiliation: | (School of Chemical Engineering,Huaihai Institute of Technology,Lianyungang 222005,China) |
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| Abstract: | A new method for the determination of trace cadmium by the spectrophotometric reaction of a reagent 4-（6-methoxyl-8-quinolineazo）-pyrocatechol （MQAPC） with Cd（Ⅱ） was developed. In the presence of the nonionic surfactant OP and in Bicarbonate/Carbonate buffer solution,Cd（Ⅱ） with MQAPC formed a stable,negatively charged,1：2 ratio complex. It has an absorption maximum at 565nm and its appearent molar absorptivity is 4.68×104L/（mol·cm）. Beer＇s law is obeyed over the concentration range of 0.1~1.0μg/mL Cd（Ⅱ）. The proposed method was applied to the determination of trace cadmium in environmental water with satisfactory results obtained. |
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| Keywords: | 4-（6-methoxyl-8-quinolineazo）-pyrocatechol spectrophotometry Cd（Ⅱ） |
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