| Study on Cyclometalated Palladium-azo Complexes as Colorimetric Probes for Hazardous Gas in Water |
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| 作者姓名： | 于春伟 李顺华 郑洪 许金钩 |
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| 作者单位： | Key Laboratory of Analytical Science of Ministry of Education, Departmet of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, China |
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| 基金项目： | Project supported by the National Natural Science Foundation of China （No. 20275033） and the Natural Science Foundation of Fujian Province of China （No. 2006J0173）. |
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| 摘 要： | A synthesized cyclometalated palladium-azo complex was explored as a multifunctional probe for visual detection of SO2, H2S and NH3 in water. In acidic aqueous environment, the sensing solution underwent a sharp color change from poor violet to deep blue when titrated with Na2SO3 standard solution. But the color changed from poor violet to bright yellow when titrated with Na2S standard solution. In basic environment, the sensing solution rapidly changed to magenta when titrated by NH4Cl-NH3 standard buffer solution at high concentration. However, the color of sensing solution changed to blue when titrated by NH4Cl-NH3 standard buffer solution at low concentration although the pH was kept constant during the titration. Different species of these hazardous gases at environmentally relevant concentration levels were differentiated by independent optical signal outputs, and the interference from other inorganic ions commonly existing in water was very small.
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| 关 键 词： | 水 有害气体 比色测量探针 金属错合物 钯-偶氮配合物 SO2 H2S NH3 |
| 修稿时间： | 2006-06-092007-02-07 |
Study on Cyclometalated Palladium-azo Complexes as Colorimetric Probes for Hazardous Gas in Water |
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| YU, Chun-Wei LI, Shun-Hua ZHENG, Hong XU, Jin-Gou.Study on Cyclometalated Palladium-azo Complexes as Colorimetric Probes for Hazardous Gas in Water[J].Chinese Journal of Chemistry,2007,25(6):797-801. |
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| Authors: | YU Chun-Wei LI Shun-Hua ZHENG Hong XU Jin-Gou |
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| Institution: | Key Laboratory of Analytical Science of Ministry of Education, Departmet of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, China |
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| Abstract: | A synthesized cyclometalated palladium-azo complex was explored as a multifunctional probe for visual detection of SO2, H2S and NH3 in water. In acidic aqueous environment, the sensing solution underwent a sharp color change from poor violet to deep blue when titrated with Na2SO3 standard solution. But the color changed from poor violet to bright yellow when titrated with Na2S standard solution. In basic environment, the sensing solution rapidly changed to magenta when titrated by NH4Cl-NH3 standard buffer solution at high concentration. However, the color of sensing solution changed to blue when titrated by NH4Cl-NH3 standard buffer solution at low concentration although the pH was kept constant during the titration. Different species of these hazardous gases at environmentally relevant concentration levels were differentiated by independent optical signal outputs, and the interference from other inorganic ions commonly existing in water was very small. |
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| Keywords: | cyclometalated palladium-azo complex optical probe SO2 H2S NH3 |
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