| 萃取催化光度法测定痕量铜 |
| |
| 引用本文： | 朱庆仁,孙登明,蓝海珠.萃取催化光度法测定痕量铜[J].分析试验室,1999,18(4):49-52. |
| |
| 作者姓名： | 朱庆仁 孙登明 蓝海珠 |
| |
| 作者单位： | 淮北煤炭师范学院化学系,淮北,235000 |
| |
| 摘 要： | 研究了在ｐＨ５．５的弱酸性介质中，利用邻菲罗啉活化铜（Ⅱ）催化过氧化氢氧化邻氨基酚显色的指示反应，用萃取平衡控制反应时间，水相中邻氨基酚的浓度和反应程度，建立了萃取催化光度法测定痕量铜的新方法。方法的线性范围为０．０００５０￣０．１０ｍｇ／Ｌ，检测限为５．０×１０＾－７ｇ／Ｌ。用于水和粮食中痕量铜的测定，结果满意。
|
| 关 键 词： | 铜 萃取 催化光度法 邻氨基酚 |
| 文章编号： | 1000-0720(1999)
04-049-04 |
Determination of Trace Copper by Extraction Catalytic Spectrophotometry |
| |
| ZHU Qing-ren,SUN Deng-ming,LAN Hai-zhu.Determination of Trace Copper by Extraction Catalytic Spectrophotometry[J].Chinese Journal of Analysis Laboratory,1999,18(4):49-52. |
| |
| Authors: | ZHU Qing-ren SUN Deng-ming LAN Hai-zhu |
| |
| Abstract: | new extraction catalytic spectrophotometric method for the
determination of trace copper was studied.The method is based on the copper() catalyzed
oxidation of oaminophenol by hydrogen peroxide in the presence of 1,10phenanthroline as an
activator in weak by acidic medium at pH5.5.The reaction time,concentration of oaminophenol in
equeous phase and degree of reaction are controlled by extraction equilibrium.The linear range
of the method is 0.0005010mg/L,the detection limit is 5.010-7g/L.The method has been applied
to the determination of trace copper in water and food samples with satisfactory results. |
| |
| Keywords: | Copper extraction catalytic spectrophotometry oaminophenol |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
