| 王晓娟,魏传晚,丁娟,杨泽权,朱西祥,张颖.间接荧光光度法测定痕量铈[J].南华大学学报(自然科学版),2012,26(1):79~81.[WANG Xiao-juan,WEI Chuan-wan,DING Juan,YANG Ze-quan,ZHU Xi-xiang,ZHANG Ying.Determination of Trace Cerium by Indirect Fluorescent Spectrophotometry[J].Journal of University of South China(Science and Technology),2012,26(1):79~81.] |
| 间接荧光光度法测定痕量铈 |
| Determination of Trace Cerium by Indirect Fluorescent Spectrophotometry |
| 投稿时间：2011-11-07 |
| DOI： |
| 中文关键词: 荧光光度法 增敏 铈 抗坏血酸 甲醛 |
| 英文关键词:fluorescence spectrophotometry sensitization cerium ascorbic acid formaldehyde |
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| 中文摘要: |
| 基于在无荧光性的铈（Ⅳ）体系中加入抗坏血酸后生成有特征荧光的铈（Ⅲ）离子，体系中再加入一定浓度的甲醛溶液后，新体系的荧光性得到更大强度的增敏.据此建立了一种间接测定痕量铈（Ⅳ）离子的新方法.利用该方法铈（Ⅳ）离子浓度在1×10-6mol/L～1×10-4mol/L范围内呈良好的线性关系，检出限为7.2×10-8mol/L.此方法具有操作简便、灵敏度高、选择性好等优点. |
| 英文摘要: |
| This paper describes a new method for determination of trace amounts of cerium.The principle of the method as follows:Ce (Ⅳ) system which was absent of fluorescence became a characteristic fluorescence of Ce (Ⅲ) ion by adding ascorbic acid into Ce (Ⅳ) system,and re- adding a certain concentration formaldehyde solution,the new system had greater fluorescence intensity of the sensitizer.Thereby a new method of an indirect determination of trace cerium (Ⅳ) ion was established.With this method Cerium (Ⅳ) ion concentration in the 1×10-6 mol/L ～ 1×10-4 mol/L range showed good linearity,and detection limit was 7.2×10-8 mol/L.This method is simple,sensitive and selective. |
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