微乳液增溶导数分光光度法直接测定水中可溶性磷酸盐
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
Received date: 2002-04-13
Online published: 2010-10-01
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
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.
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