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A simple and sensitive apparatus for continuous monitoring of orthophosphate in the presence of acid-labile compounds

โœ Scribed by A.A. Baykov; S.M. Avaeva

Publisher
Elsevier Science
Year
1981
Tongue
English
Weight
265 KB
Volume
116
Category
Article
ISSN
0003-2697

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โœฆ Synopsis

An inexpensive

analyzer for continuous recording of orthophosphate concentration has been designed utilizing instruments used in routine liquid chromatography.

The determination is based on the change in the spectrum of methyl green upon binding to molybdophosphoric acid (H. Van Belle, 1970, Anal. Biochem. 33, 132-142).

Changes in PI concentrations down to I and 5 pM in a sample can be displayed full-scale on the recorder at sample consumption rates of 7 and 1.4 ml/min, respectively. Short time of sample contact with acid (down to 6 s) enables measurements to be made in the presence of highly labile compounds such as acetyl phosphate.

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