| 单扫描极谱法测定罐装水果中微量锡 |
| |
| 引用本文： | 周享春,周智敏. 单扫描极谱法测定罐装水果中微量锡[J]. 化学研究, 2005, 16(1): 65-68 |
| |
| 作者姓名： | 周享春 周智敏 |
| |
| 作者单位： | 长江大学,化学与环境工程学院,湖北,荆州,434020;长江大学,化学与环境工程学院,湖北,荆州,434020 |
| |
| 基金项目： | 湖北省自然科学基金资助项目(2004ABA104). |
| |
| 摘 要： | 建立了一种简易、快速检测罐装水果中锡的单扫描极谱法.在 0. 05mol·L-1H2C2O4和 0. 003 %次甲基绿体系中,Sn(Ⅳ)在汞电极上于-0. 52V(vs.SCE)处有一灵敏的极谱波.该极谱波的波高与Sn(Ⅳ )的浓度在3. 0×10-8 ~ 5. 0×10-6 g·mL-1范围内呈线性关系,检测下限为 8. 2×10-9 g·mL-1,应用该法测定了罐装水果中的微量锡,并同光度法所获结果进行了对照,结果基本一致.
|
| 关 键 词： | 食品 锡 极谱测定 |
| 文章编号： | 1008-1011(2005)01-0065-04 |
| 修稿时间： | 2004-10-21 |
Determination of Trace Tin in Canned Fruits by Single Sweep Polarography |
| |
| ZHOU Xiang-chun,ZHOU Zhi-min. Determination of Trace Tin in Canned Fruits by Single Sweep Polarography[J]. Chemical Research, 2005, 16(1): 65-68 |
| |
| Authors: | ZHOU Xiang-chun ZHOU Zhi-min |
| |
| Abstract: | Determination of trace tin in canned fruits by single sweep polarography is presented in this paper.In 0.05 mol·L~(-1) H_2C_2O_(4) and 0.003% methylene green system,Sn(Ⅳ) produced a sensitive polarographic wave on the mercury electrode at the potential of -0.52 V(vs.SCE).The intensity of the peak shows linear relationship with Sn(Ⅳ) concentration in the range of 3.0×10~(-8)～5.0×10~(-6 ) g·mL~(-1).The detection limit is 8.2×10~(-9) g·mL~(-1).The proposed method is found to be in good agreement with the results obtained by the spectroscopy method. |
| |
| Keywords: | food tin polarographic determination |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
