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| 三聚氰胺-Cu~(2+)-ANS三元络合物荧光光谱法检测超痕量三聚氰胺 | |
| 引用本文： | 张银堂,张彦峥,张丽娟,张富强,陈芳,徐茂田.三聚氰胺-Cu~(2+)-ANS三元络合物荧光光谱法检测超痕量三聚氰胺[J].分析化学,2010,38(8). |
| 作者姓名： | 张银堂 张彦峥 张丽娟 张富强 陈芳 徐茂田 |
| 作者单位： | 1. 商丘师范学院化学系,商丘,476000 2. 郑州大学化学系,郑州,450053 3. 商丘师范学院化学系,商丘,476000;郑州大学化学系,郑州,450053 |
| 基金项目： | 国家自然科学基金，海南省教育厅自然科学基金研究计划 |
| 摘 要： | 利用荧光光谱法研究了三聚氰胺(MEL)和Cu2+与8-苯胺-1-萘磺酸(ANS)的相互作用.研究表明,MEL和Cu2+均对ANS有荧光猝灭作用,且猝灭机理均为静态猝灭.计算了表观结合常数和结合位点数.Cu2+的引入使得MEL猝灭ANS荧光的效果急剧增强,体系的相对荧光峰强与MEL浓度(1×10-10～1×10-5 mol/L)的对数值呈良好的线性关系,三聚氰胺的检出限为3.8×10-11 mol/L.紫外、荧光、三维荧光光谱的结果表明,MEL及Cu2+对ANS的荧光猝灭为协同作用,三者形成了三元络合物.本研究建立了荧光光谱检测超痕量三聚氰胺的新方法,为奶粉、乳制品中三聚氰胺的检测提供了新思路. |
| 关 键 词： | 三聚氰胺 荧光光谱 8-苯胺-1-萘磺酸 铜离子 |
Determination of Ultratrace Melamine by Fluorescence Spectroscopy Using Melamine-Cu~(2+)-ANS Ternary Complex |
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| ZHANG Yin-Tang,ZHANG Yan-Zheng,ZHANG Li-Juan,ZHANG Fu-Qiang,CHEN Fang,XU Mao-Tian.Determination of Ultratrace Melamine by Fluorescence Spectroscopy Using Melamine-Cu~(2+)-ANS Ternary Complex[J].Chinese Journal of Analytical Chemistry,2010,38(8). | |
| Authors: | ZHANG Yin-Tang ZHANG Yan-Zheng ZHANG Li-Juan ZHANG Fu-Qiang CHEN Fang XU Mao-Tian |
| Institution: | ZHANG Yin-Tang1,ZHANG Yan-Zheng2,ZHANG Li-Juan1,ZHANG Fu-Qiang1,CHEN Fang1,XU Mao-Tian1,2 1(Department of Chemistry,Shangqiu Normal University,Shangqiu 476000) 2(Department of Chemistry,Zhengzhou University,Zhengzhou 450052) |
| Abstract: | The interactions between melamine(MEL) and copper ion(Cu2+) with 8-anilin-1-naphthalene sulfonic acid(ANS) were investigated by fluorescence spectroscopy. The results indicated that both MEL and Cu2+ could quench the fluorescence of ANS by the static quenching style. The binding constants and site number were obtained. The fluorescence of ANS was dramatically quenched by MEL when Cu2+ solution was added. A good linear relation between relative fluorescence intensity and logarithm concentration of MEL was fo... |
| Keywords: | Melamine Fluorescence spectroscopy 8-Anilin-1-naphthalene sulfonic acid Copper ion |
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