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Abstract

The molybdenum blue reaction, used predominantly for the determination of orthophosphate in environmental waters, has been perpetually modified and re-optimised over the years, but this important reaction in analytical chemistry is usually treated as something of a 'black box' in the analytical literature. A large number of papers describe a wide variety of reaction conditions and apparently different products (as determined by UV–visible spectroscopy) but a discussion of the chemistry underlying this behaviour is often addressed superficially or not at all. This review aims to rationalise the findings of the many 'optimised' molybdenum blue methods in the literature, mainly for environmental waters, in terms of the underlying polyoxometallate chemistry and offers suggestions for the further enhancement of this time-honoured analytical reaction.

DOI

10.1016/j.aca.2015.07.030

Publication Date

2015-08-26

Publication Title

Analytica Chimica Acta

Volume

890

First Page

60

Last Page

82

ISSN

0003-2670

Embargo Period

2017-08-26

Organisational Unit

School of Geography, Earth and Environmental Sciences

Keywords

Molybdenum blue reaction, Orthophosphate, Dissolved reactive phosphorus, Phosphomolybdate

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