Record Display for the EPA National Library Catalog
RECORD NUMBER: 9 OF 26
|OLS Field Name||OLS Field Data|
|Main Title||Control of cadmium carbonate precipitation interferences during the dialysis of cadmium in high bicarbonate alkalinity aquatic-life bioassay waters /|
|Author||Poldoski, John E.|
|CORP Author||Environmental Research Lab.-Duluth, MN.|
|Publisher||U.S. Environmental Protection Agency, Environmental Research Laboratory,|
|Subjects||Cadmium. ; Dialysis.|
|Additional Subjects||Cadmium carbonates ; Dialysis ; Cadmium ; Water pollution ; Natural resources ; Precipitation(Chemistry) ; Concentration(Composition) ; Humic acid ; Reaction kinetics ; Water analysis ; Comparison ; Aquatic biology ; Water pollution detection ; Ion selective electrodes|
|Collation||32 pages : illustrations ; 28 cm|
The precipitation of cadmium carbonate during the dialysis of cadmium in a high bicarbonate alkalinity natural water, was linked to a significant source of error when determining dialyzate cadmium concentrations. The relative standard deviation was reduced by approximately four-fold when this precipitation was controlled by adding a particular preparation of humic acid to the dialysis bag filling solution. Linear regression correlation coefficients for sample-by-sample comparisons between resultant dialysis values and corresponding free cadmium values, obtained by cadmium ion selective electrode, were 0.90 or greater for concentrations in the range of 2 micrograms/L to 132 micrograms/L Cd(+2).
Caption title. "December 1985." "EPA/600/3-86/001." Includes bibliographical references. Microfiche.