Flow injection analysis of total inorganic phosphate

Details Flow injection analysis of total inorganic phosphate Flow injection analysis of total inorganic phosphate

1991-08-15

1993-10-12

Johnston, Jill A.

Chemistry: analytical and immunological testing

Automated chemical analysis

With a continuously flowing sample or carrier stream

436103, 436155, 436164, G01N 3122, G01N 3500

Patent

active

052524868

ABSTRACT:
A method for flow injection analysis of total inorganic phosphate contained in an aqueous system such a cooling tower or boiler is described which uses a reducing agent and preservative composition therefore as the carrier for the sample to be analyzed, thereby creating a facile process which permits conversion of the various polyphosphates to orthophosphate and development of the molybdenum blue complex color reaction at 60.degree.-95.degree. C. and under 2-10 psi. This method has less stringent pressure and temperature requirements than those employed heretofore, thus permitting the use of more reliable and economic devices for measuring total inorganic phosphate in the field.

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Pederson et al, Analytica Chemica Acta, 238: 191 (1990).
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