University of North Florida
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Stuart Chalk, Ph.D.
Department of Chemistry
University of North Florida
Phone: 1-904-620-1938
Fax: 1-904-620-3535
Website: @unf

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Classification: Environmental -> water -> runoff

Citations 1

"A New Flow Injection System For Spectrophotometric Determination Of Phosphate Ions"
Rev. Roum. Chim. 1999 Volume 44, Issue 8 Pages 771-777
Cheregi, M.C.;Danet, A.F.

Abstract: A flow injection system for determining the phosphate ions in natural, drinking, and residual waters was assembled. It contained an injection device with several mono-channel valves which can be either opened or shut simultaneously. Determination of PO43- ion with this FIA system is done by using the method based on the formation of phosphomolybdenum blue and spectrophotometric detection at 660 nm of the reaction product. The influence of different operational parameters was investigated. The calibration curve was linear over the 1-30 µg PO43- mL-1 domain, the relative standard deviation was 1.8% (n = 10) and the number of samples that could be analyzed was 30 h-1. A study on possibly interfering ions was also carried out. (SFS)
Phosphate Spectrophotometry Interferences Optimization