| Main Title |
Comparison of Three Wet-Alkaline Methods of Digestion of Biogenic Silica in Water. |
| Author |
Krausse, G. L. ;
Schelske, C. L. ;
Davis, C. O. ;
|
| CORP Author |
Michigan Univ., Ann Arbor. Great Lakes Research Div.;Environmental Research Lab.-Duluth, MN. |
| Year Published |
1983 |
| Report Number |
EPA-R-806294; EPA-600/J-83-117; |
| Stock Number |
PB84-128115 |
| Additional Subjects |
Silicon dioxide ;
Water analysis ;
Sediments ;
Chemical analysis ;
Great Lakes ;
Digestion(Decomposition) ;
Extraction ;
Water pollution ;
Reprints ;
Water pollution detection ;
Natural emissions ;
Wet methods
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB84-128115 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
12p |
| Abstract |
Methods for determination of low levels of biogenic silica (0.2-0.4 mg SiO2) in aqueous samples after digestion with three wet-alkaline extraction procedures compared favourably in both precision of replicates and recovery of silica utilized by diatoms in budgeted cultures. Time-course experiments are recommended for establishing digestion times and determining the presence of mineral silicate interference. Wet-alkaline digestion methods are recommended for routine analysis of biogenic silica in suspended matter in preference to infra-red analysis, alkaline fusion and hydrofluoric acid/nitric acid methods. |
