Interference of sulphide in inorganic phosphate determination in natural waters

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doi: 10.1016/0304-4203(80)90038-9
Authors:de Jonge, V. N.; Villerius, L. A.
Volume Title:Marine Chemistry
Source:Marine Chemistry, 9(3), p.191-197. Publisher: Elsevier, Amsterdam, Netherlands. ISSN: 0304-4203
Publication Date:1980
Note:In English. Neth. Inst. Sea Res., Biol. Res. Ems-Dollard Estuary Proj.; Publ. No. 26. 23 refs.; illus. incl. table
Summary:Sulphide interferes with the assay of inorganic phosphate. This interference is caused by antimony, one of the reagents. Depending on the concentrations of Sb and sulphide, various effects on the absorption spectrum are found. Different SbS compounds are formed at changing S2- and Sb levels. Moreover, the spectrum of phosphomolybdenum - antimony blue is replaced by that of pure phosphomolybdenum blue. Use of a higher Sb concentration in the method of Murphy & Riley is proposed to prevent disturbance. (Authors' abstract) [T.R.]
Subjects:Analysis; Antimony; Chemical analysis; Estuaries; Geochemistry; Inorganic materials; Lakes; Metals; Natural materials; Phosphate ion; Phosphorus; Reagents; Sample preparation; Sea water; Surface water; Techniques; Water; Sulfide ion
Abstract Numbers:83M/4105
Record ID:1981006721
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom
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