Article ID Journal Published Year Pages File Type
1243438 Talanta 2015 5 Pages PDF
Abstract

•Simultaneous flow injection determination of phosphate and silicate ions is proposed.•Molybdophosphoric and molybdosilicic acids are formed in the system.•After injection of oxalic acid molybdophosphoric acid is decomposed.•Area of a registered peak corresponds to phosphate concentration.•Absorbance measured at the peak minimum corresponds to silicate concentration.

A method for the simultaneous determination of phosphate and silicate based on spectrophotometric measurement at 385 nm of a single peak using a flow injection system with two component calibration is described. In the system, a stream of sample containing both analytes is merged with a stream of ammonium molybdate to form (at 1

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Related Topics
Physical Sciences and Engineering Chemistry Analytical Chemistry
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