Record Display for the EPA National Library Catalog


Main Title Phosphate Measurements in Natural Waters, A Critique.
Author Chamberlai, William ; Shapir, Joseph ;
CORP Author Minnesota Univ., Minneapolis. Limnological Research Center.
Year Published 1970
Report Number Contrib-103; DI-14-01-0001-1515; OWRR-B-009-MINN; 09557,; B-009-MINN(4)
Stock Number PB-200 824
Additional Subjects ( Water pollution ; Phosphates) ; ( Phosphates ; Chemical analysis) ; Lakes ; Ecology ; Limnology ; Arsenates ; Hydrolysis ; Chemical indicators ; Spectrophotometry ;
Library Call Number Additional Info Location Last
NTIS  PB-200 824 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 22p
The so-called molybdenum blue method for assaying the inorganic phosphate concentration of solutions is well established in scientific circles. This study was concerned with what, specifically, is being measured by the molybdenum blue method and whether or not the method is providing valid estimates of the dissolved inorganic phosphate concentration of natural waters. It is concluded that neither a hidden blank error or the hydrolysis of organic phosphate esters will seriously bias the results obtained by the molybdenum blue method. Except in instances where arsenate is a problem the molybdenum reactive material present in natural waters may be regarded as inorganic phosphate, although not necessarily as free phosphate ion.