| 催化K2S2O8氧化靛红固体基质室温磷光法测定痕量Se(V) |
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| 引用本文： | 张丽红,李志明,张德顺,孙丽娜.催化K2S2O8氧化靛红固体基质室温磷光法测定痕量Se(V)[J].分析测试技术与仪器,2012,18(3):159-166. |
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| 作者姓名： | 张丽红 李志明 张德顺 孙丽娜 |
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| 作者单位： | 漳州职业技术学院 食品与生物工程系，福建 漳州 363000;漳州职业技术学院 食品与生物工程系，福建 漳州 363000;漳州职业技术学院 食品与生物工程系，福建 漳州 363000;漳州职业技术学院 食品与生物工程系，福建 漳州 363000 |
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| 基金项目： | 福建省教育厅科技项目（JA11311）资金资助。 |
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| 摘 要： | 基于痕量Se4+催化K2S2O8氧化靛红(Isa)的灵敏反应而导致体系的磷光剧烈猝灭的学术思想,建立了一种高灵敏(检出限(LD)为0.015 pg/mL)催化固体基质室温磷光法(SS RTP)测定痕量Se(Ⅳ)的新方法.方法的线性范围为4.00×10–8～4.00×10–6μg/mL.工作曲线的回归方程为△IP=2.948+63.24 CSe(Ⅳ)(pg/mL),n=7.相关系数(r)为0.9997.方法已成功用于水样中痕量Se(Ⅳ)的测定,结果与紫外分光光度法相吻合,并探讨了测定痕量Se(Ⅳ)的反应机理.
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| 关 键 词： | Se(Ⅳ) 靛红 K2S2O8 催化固体基质室温磷光法 |
| 收稿时间： | 2012/7/11 0:00:00 |
| 修稿时间： | 9/7/2012 12:00:00 AM |
Solid Substrate Room Temperature Phosphorimetry for Determination of Trace Selenium Based on Catalytic Reaction Between Trace Selenium and Isatin |
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| ZHANG Li-hong,LI Zhi-ming,ZHANG De-shun and SUN Li-na.Solid Substrate Room Temperature Phosphorimetry for Determination of Trace Selenium Based on Catalytic Reaction Between Trace Selenium and Isatin[J].Analysis and Testing Technology and Instruments,2012,18(3):159-166. |
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| Authors: | ZHANG Li-hong LI Zhi-ming ZHANG De-shun and SUN Li-na |
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| Institution: | Department of Food and Biological Engineering, Zhangzhou Institute of Technology, Zhangzhou 363000,China;Department of Food and Biological Engineering, Zhangzhou Institute of Technology, Zhangzhou 363000,China;Department of Food and Biological Engineering, Zhangzhou Institute of Technology, Zhangzhou 363000,China;Department of Food and Biological Engineering, Zhangzhou Institute of Technology, Zhangzhou 363000,China |
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| Abstract: | According to the academic thought that trace Se （ IV ） could catalyze the oxidation reaction between K2S2O8 and isatin （Isa） causing the sharp quenching of the room temperature phosphorescence （RTP） signal of Isa. A catalytic solid substrate room temperature phosphorimetry （SSRTP） for the determination of trace Se （IV） has been established. This method has a high sensitivity （ with a detection limit （LD） of 0. 015 pg/mL）, a wide linear range （4.00×10-8～4.00×10-6μg/mLL）, the regression equation of the working curve was △Ip= 2. 948 ＋ 63. 245 Cse（iv）（ pg/mL, n =7） , and correlation coefficient （r） was 0.9997. It has been applied to the determination of residual Se （IV） in practical samples. The results agreed well with those of ultraviolet spectrophotometry. The reaction mechanism of catalytic SS-RTP for the determination of residual Se （IV） was also discussed. |
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| Keywords: | Selenium (IV) Isatin K2S2O8 catalytic solid substrate room temperature phosphorime |
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