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Separation and detection of condensed phosphates in waste waters by ion chromatography coupled with flow injection

Version 2 2024-06-04, 05:55
Version 1 2017-05-01, 15:15
journal contribution
posted on 2024-06-04, 05:55 authored by David HalliwellDavid Halliwell, ID McKelvie, BT Hart, RH Dunhill
A method for the separation and detection of condensed phosphates in domestic waste waters using unsuppressed ion chromatography coupled with post-column flow injection detection of phosphorus is reported. The advantages of this technique over previously reported methods are its short analysis time (approximately 12 min per sample) and high sensitivity. The method was linear over the concentration range 10-1000 μg l -1 P for orthophosphate and 20-2000 μg l -1 P for pyrophosphate and triphosphate using a 500 μl sample loop. Detection limits for PO 4 3- , P 2 O 7 4- and P 3 O 10 5- were 10, 20 and 20 μg l -1 P, respectively. Recoveries of pyrophosphate and triphosphate for spiked filtered (0.22 μm) raw sewage samples were between 95 and 102% over the concentration range 50-1000 μg l -1 .

History

Journal

The Analyst

Volume

121

Pagination

1089-1093

ISSN

0003-2654

Language

eng

Publication classification

CN.1 Other journal article

Issue

8

Publisher

Royal Society of Chemistry

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