A paper-based device for measurement of reactive phosphate in water

BM Jayawardane; ID McKelvie; SD Kolev

Journal article

A paper-based device for measurement of reactive phosphate in water

BM Jayawardane, ID McKelvie, SD Kolev

Talanta | ELSEVIER | Published : 2012

DOI: 10.1016/j.talanta.2012.08.021

Abstract

The preparation and evaluation of a simple paper-based device for the determination of reactive phosphate in natural and soil waters based on the formation of phosphomolybdenum blue is reported. Hydrophilic reagent zones were defined by printing filter paper with a hydrophobic paper-sizing agent using an inkjet printer. The molybdate/potassium antimony(III)-tartrate reagent and ascorbic acid reductant merged together from adjacent hydrophilic zones after spotting the liquid sample onto the paper. The colour intensity of the phosphoantimonylmolybdenum blue complex produced was measured using a flat bed scanner. Under optimal conditions, the paper-based device is characterised by a working ran..

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University of Melbourne Researchers

Ian McKelvie Author

Spas Kolev Author

Related Projects (1)

PAPER FLUIDICS - A NOVEL APPROACH TO LOW COST PRINTABLE MICROSENSORS

Printing is perhaps the cheapest means of mass production available, yet it is used almost exclusively to mass produce only one thing, i.e. ..

Grants

Awarded by Australian Research Council

Funding Acknowledgements

The authors are grateful to the Australian Research Council for financial support (Discovery Project DP1094179). B. Manori Jayawardane acknowledges The University of Melbourne for the award of a postgraduate scholarship. The assistance of Drs. David Nash and Michael Heaven, and James Britt (Department of Primary Industries, Ellinbank, Victoria) for the provision of samples and comparative analytical data, and Hercules Chemicals, Australia for providing Precis 900 Sizing agent, is gratefully acknowledged.