An autonomous microfluidic sensor for phosphate: On-site analysis of treated wastewater

被引：37

作者：

Cleary, John ^{[1
]}

Slater, Conor ^{[1
]}

McGraw, Christina ^{[1
]}

Diamond, Dermot ^{[1
]}

机构：

[1] Dublin City Univ, AIC Adapt Sensors Grp, Dublin 9, Ireland

来源：

IEEE SENSORS JOURNAL | 2008年 / 8卷 / 5-6期

基金：

爱尔兰科学基金会;

关键词：

environment; microfluidic; phosphate; wireless sensor network;

D O I：

10.1109/JSEN.2008.918259

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A microfluidic sensor for long-term monitoring of phosphate levels has been developed that incorporates sampling, reagent and waste storage, detection, and wireless communication into a compact and portable device. The sensor is based on the yellow method for phosphate determination, a simple colorimetric technique involving the formation of vanadomolybdophosphoric acid when a phosphate-containing sample is mixed with an acidic reagent containing ammonium molybdate and ammonium metavanadate. This paper describes the application of the phosphate sensor to the on-site analysis of effluent from a wastewater treatment plant. The data was validated by comparison with the plant's existing online monitor, and a good correlation between the two sets of data was achieved, showing that the phosphate sensor is capable of operating satisfactorily at low mg L-1 levels over extended periods of time.

引用

页码：508 / 515

页数：8

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