Record Display for the EPA National Library Catalog

RECORD NUMBER: 244 OF 1090

OLS Field Name OLS Field Data
Main Title Development of a Method to Determine Ortho-, Pyro-, and Tripoly-Phosphate in Sediment.
Author Blancha, R. W. ; Rieg, Domingo ;
CORP Author Missouri Water Resources Research Center, Columbia.
Year Published 1973
Report Number DI-14-31-0001-3605; OWRR-B-051-MO; 06035,; B-051-MO(1)
Stock Number PB-216 603
Additional Subjects ( Sediments ; Chemical analysis) ; ( Inorganic phosphates ; Sediments) ; Solvent extraction ; Chromatographic analysis ; Errors ; Accuracy ; Water pollution ; Pyrophosphates ; Tripolyphosphates
Holdings
Library Call Number Additional Info Location Last
Modified
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Status
NTIS  PB-216 603 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/23/1988
Collation 57p
Abstract
Phosphate detergents are primarily sodium tripolyphosphates. High analysis phosphates used in liquid fertilizers and some solid fertilizers are composed of orthophosphate, pyrophosphate and tripolyphosphate. Unfortunately, there are no methods available to extract and separate these phosphates when they are contained in sediments. The objective of the report is to present a method for the extraction, separation, and analysis of them. In the method, sediment is extracted with 2% EDTA + 0.1M NH4F followed by a second extract of 2% EDTA + 1N NaOH. Then orthophosphate (OP), PP, and TPP are separated by anion exchange chromotography, and the fractions collected and P determined after extraction into isobutanol. The limit of detection of the method was 0.5 microgram P/g sediment.