Rapid determination of aminotris(methylenephosphonic acid) in water by ultraviolet photooxidation. Issue 4 (4th July 2017)

• Record Type: Journal Article
• Authors: Zhang, Xiaoyun; Guo, Wenya; Zheng, Ying; Cheng, Zhongfa; Qi, Xiaojing; Gao, Canzhu
• Is Part Of: Instrumentation science & technology. Volume 45:Issue 4(2017)
• Page Start: 459
• Page End: 468
• Publication Date: 2017-07-04
• Subjects: Aminotris(methylenephosphonic acid) -- digestion -- sodium persulfate -- spectrophotography -- ultraviolet photooxidation; Scientific apparatus and instruments -- Periodicals; 681.2
• DOI: 10.1080/10739149.2016.1255227
• Languages: English
• ISSNs: 1073-9149

Abstract

ABSTRACT: Aminotris(methylenephosphonic acid) is a commonly used reagent in circulating water to minimize deposit and corrosion inhibition that should be monitored. Aminotris(methylenephosphonic acid) was determined in circulating water using a photooxidation reaction to produce orthophosphate that was subsequently determined. The optimal conditions for analytical measurements were 1.0 g/L sodium persulfate oxidizing agent and a digestion time of 8 min. It was not necessary to control the pH. The optimum digestion efficiency of aminotris(methylenephosphonic acid) was 95% with good accuracy and precision and recoveries between 98% and 105%. The reported protocol is simple, rapid, and allows the on-line monitoring of aminotris(methylenephosphonic acid) in circulating water.