| 脂溶性酞菁钴(III)为载体的高选择性亚硝酸根PVC膜电极 |
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| 引用本文： | 李梭忠,胡敏,俞汝勤.脂溶性酞菁钴(III)为载体的高选择性亚硝酸根PVC膜电极[J].化学学报,1995,53(11):1118-1123. |
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| 作者姓名： | 李梭忠 胡敏 俞汝勤 |
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| 作者单位： | 湖南大学化学化工系 |
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| 基金项目： | 国家自然科学基金，中国科学院长春应用化学研究所电分析化学开放实验室资助的课题. |
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| 摘 要： | 以自制的4,4',4',4'-四特丁基酞菁钴(II)为原料合成二氯4,4',4',4'-四特丁基酞菁钴(III)。以此为载体制备PVC膜电极。该电极的电位选择性次序明显不同于Hofmeister次序, 其最佳 响应斜率为-52mV/pNO2^-, 线性范围为3×10^-^5～1×10^-^1mol.dm^-^3NaNO2。通过改变配合物轴向的配位阴离子, 用紫外-可见光谱法对电极的响应机理作了初步探讨。
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| 关 键 词： | 紫外分光光度法 反应机理 离子选择电极 膜电极 亚硝酸 酞菁钴 |
A highly selective nitrite sensitive PVC membrane electrode using lipophilic phthalocyanine cobalt (III) complex as the carrier |
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| LI SUOZHONG,HU MIN,YU RUQIN.A highly selective nitrite sensitive PVC membrane electrode using lipophilic phthalocyanine cobalt (III) complex as the carrier[J].Acta Chimica Sinica,1995,53(11):1118-1123. |
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| Authors: | LI SUOZHONG HU MIN YU RUQIN |
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| Abstract: | In this paper, dichloride 4,4',4',4'-tetra-tert-butylphthalocyanine cobalt (III) was synthesized and incorporated into a PVC membrane. The electrode prepared exhibits a selectivity sequence which is different from the classical Hofmeister pattern. The electrode has a high selectivity for nitrite and exhibits a linear response from 3×10^-^5 to 1×10^-^1mol.dm^-^3 of nitrite with a slope of -52mV/decade. The response mechanism of the electrode was studied using solvent extraction and UV-Vis spectroscopy by changing the axial coordination anions of the complex. |
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| Keywords: | ULTRAVIOLET SPECTROPHOTOMETRY REACTION MECHANISM ION SELECTIVE ELECTRODE MEMBRANE ELECTRODES NITROUS ACID COBALT PHTHALOCYANINE |
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