分析与监测

微乳液增溶导数分光光度法直接测定水中可溶性磷酸盐

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  • 1. 石油大学胜华炼油厂化验室, 山东东营 257061;
    2. 石油大学化学化工学院仪器分析中心, 山东东营 257061
盖仕辉(1966- ),1987年毕业于山东大学,实验师,现从事仪器分析和仪器维修等.

收稿日期: 2002-04-13

  网络出版日期: 2010-10-01

Direct determination of soluble phosphate in water by micro emulsion and first order derivative spectrophotometry

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  • 1. Shenghua Refinery, Petroleum University, Dongying 257061, China;
    2. College of Chemistry and Chemical Engineering, Petroleum University, Dongying 257061, China

Received date: 2002-04-13

  Online published: 2010-10-01

摘要

研究了在OP微乳液的作用下,用一阶导数磷钼蓝分光光度法直接测定水中可溶性磷酸盐的最佳条件。OP微乳液大大改变了磷钼蓝的最大吸收波长,并提高了测定的稳定性和灵敏度。本法可有效地消除硅、砷和悬浮物等的干扰,其服从比耳定律的线性范围为0~1.92mg/L,检出限为0.007mg/L,加标回收率在98%~101%之间,测定准确、快速。

本文引用格式

盖仕辉, 王林 . 微乳液增溶导数分光光度法直接测定水中可溶性磷酸盐[J]. 工业水处理, 2003 , 23(1) : 65 -66 . DOI: 10.11894/1005-829x.2003.23(1).65

Abstract

A new method for the determination of soluble phosphate in water by micro emulsion and the first order derivative spectrophotometry is proposed. The λ max of phosphomolybdenum blue is changed because of OP micro emulsion,and the solubility and sensitivity are increased.The interference such as the suspension,micro amount of Si and As etc. can be effectively eliminated.A linear calibration curve is obtained in 0~1.92 mg/L with a detective limit of 0.007 mg/L and the recovery rate of 98%~101%. The method is very simple and accurate in comparison with the conventional spectrophotometry.

参考文献

[1] 水和废水检测分析方法指南编委.水和废水检测分析方法指南[M].北京:中国环境科学出版社,1990.137
[2] 水质分析大全编写组. 水质分析大全[M].重庆:科学技术文献出版社重庆分社,1989.169
[3] 陈正行.植物和食物中磷测定方法的改进[J].化学世界,1996,37(1):41
[4] 王保宁.导数分光光度法[J].分析化学,1983,11(2):149

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