| 2.5次微分极谱法测定生物样品中痕量铬 |
| |
| 引用本文： | 张晓丽 王丽增. 2.5次微分极谱法测定生物样品中痕量铬[J]. 营养学报, 1993, 15(3): 323-326 |
| |
| 作者姓名： | 张晓丽 王丽增 |
| |
| 作者单位： | 山东大学化学系，山东大学化学系，山东大学化学系，山东大学化学系 济南 250100，济南 250100，济南 250100，济南 250100 |
| |
| 摘 要： | 在氯化铵-乙二胺-EDTA底液中(pH=9.00),铬(Ⅵ)与铜铁试剂产生一灵敏的络合吸附峰,Ep=-1.45V。利用此峰可测定低至9.6×10~(-10)mol/L的铬,方法用于茶叶、粮食、自来水、指甲等中铬的测定,方法回收率在94～105％之间。
|
| 关 键 词： | 铬 极谱法测定 |
DETERMINATION OF TRACE CHROMIUM IN BIOLOGICAL SAMPLES BY 2.5TH ORDER DIFFERENTIAL POLAROGRAPHIC ANALYSIS |
| |
| Zhang Xiaoli,Wang Lizeng,Lin Guangrong,Chen Kongli,. DETERMINATION OF TRACE CHROMIUM IN BIOLOGICAL SAMPLES BY 2.5TH ORDER DIFFERENTIAL POLAROGRAPHIC ANALYSIS[J]. Acta Nutrimenta Sinica, 1993, 15(3): 323-326 |
| |
| Authors: | Zhang Xiaoli Wang Lizeng Lin Guangrong Chen Kongli |
| |
| Abstract: | In NH4Cl-NH2CH2NH2-EDTA (pH = 9.0) supporting electrolyte containing cupferron, chromium( Ⅵ) complex with cupferron has a rather sensitive adsorptive wave. The reduction peak potential is -1.45V. The determination limit is 9,6×10-10mol/L. This method has been successfully used to samples of tea, grain and water. |
| |
| Keywords: | chromium polarographic analysis |
| 本文献已被 CNKI 维普 等数据库收录！ |
