| 流动注射-多道检测-催化动力学同时测定铜和铁 |
| |
| 引用本文： | 周颖,黎源倩,杨经国,郑波.流动注射-多道检测-催化动力学同时测定铜和铁[J].光谱学与光谱分析,2003,23(2):374-376. |
| |
| 作者姓名： | 周颖 黎源倩 杨经国 郑波 |
| |
| 作者单位： | 1. 四川大学华西公共卫生学院卫生检验教研室,四川,成都,610041
2. 四川大学物理系,四川,成都,610064 |
| |
| 基金项目： | 国家自然科学基金(No.39770646)，国家教委博士点基金(No.9760) |
| |
| 摘 要： | 基于Cu(Ⅱ),Fe(Ⅲ)在pH3～9范围内能同时催化过氧化氢氧化罗丹明B的褪色反应,探讨了最佳反应条件,通过构建流动注射pH梯度,采用CCD-二极管阵列检测器检测吸光度差值,反向传播-人工神经网络(BP-ANN)处理数据,实现了Cu(Ⅱ),Fe(Ⅲ)流动注射-催化动力学光度法的同时测定。Cu(Ⅱ)和Fe(Ⅲ)的检出限分别为0.10和0.21μg·L~(-1),采样频率为10次·h~(-1),本法用于标准参考物质和食品样品中铜、铁的同时测定,结果满意。
|
| 关 键 词： | 催化动力学光度法 流动注射 CCD阵列检测器 反向传播-人工神经网络 铜 铁 |
| 文章编号： | 1000-0593(2003)02-0374-03 |
| 修稿时间： | 2001年12月6日 |
Simultaneous Determination of Copper and Iron by Flow-Injection Catalytic Kinetic Spectrophotometry with Multi-Channel Detector |
| |
| ZHOU Ying,LI Yuan-qian,YANG Jing-guo and ZHENG Bo
. West China School of Public Health,Sichuan University,Chengdu ,China.Simultaneous Determination of Copper and Iron by Flow-Injection Catalytic Kinetic Spectrophotometry with Multi-Channel Detector[J].Spectroscopy and Spectral Analysis,2003,23(2):374-376. |
| |
| Authors: | ZHOU Ying LI Yuan-qian YANG Jing-guo and ZHENG Bo
West China School of Public Health Sichuan University Chengdu China |
| |
| Institution: | West China School of Public Health, Sichuan University, Chengdu 610041, China. |
| |
| Abstract: | The simultaneous determination of copper and iron by catalytic kinetic spectrophotometric method with back propagating artifical neural net (BP-ANN) was studied based on the catalysis of Cu(II) and Fe(III) to the reaction of rhodamine B hydrogen peroxide in the range of pH 3-9. The determination was performed by the construction of pH gradient and a CCD-diode array detector with a microcomputer. The optimum conditions of reaction and flow injection were studied. The determination limits for copper and iron were 0.10 and 0.21 microgram.L-1, respectively. The sampling rate was 10 samples per hour. The proposed method has been used to determine Cu(II) and Fe(III) in certified reference materials and food samples with satisfactory results. The average values of spiked recovery were 93.3%-100.2% with RSD of 0.6%-7.5%. |
| |
| Keywords: | |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
