Main Title |
Determination of Acid Volatile Sulfide and Selected Simultaneously Extractable Metals in Sediment. |
Author |
Allen, H. E. ;
Fu, G. ;
Boothman, W. ;
DiToro, D. M. ;
Mahony, J. D. ;
|
CORP Author |
Environmental Research Lab., Narragansett, RI. ;Delaware Univ., Newark. ;Manhattan Coll., Bronx, NY. |
Publisher |
Dec 91 |
Year Published |
1991 |
Report Number |
EPA/821/12-91/100; |
Stock Number |
PB94-183852 |
Additional Subjects |
Sediments ;
Metals ;
Acidification ;
Water pollution sampling ;
Chemical reaction kinetics ;
Solubility ;
Anaerobic conditions ;
Chemical analysis ;
Analytic techniques ;
Water pollution effects ;
Physicochemical properties ;
Extraction ;
Hydrogen sulfide ;
Toxicity ;
Biological availability ;
Sediment-water interfaces ;
Acid volatile sulfide ;
SEM(Simultaneously extracted metal)
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB94-183852 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
22p |
Abstract |
The method describes procedures for the determination of acid volatile sulfide (AVS) and for selected metals that are solubilized during the acidification step (simultaneously extracted metal, SEM). As a precipitant of toxic heavy metals, sulfide is important in controlling the bioavailability of metals in anoxic sediments. Research has established that the relative amounts of SEM and AVS are important in the prediction of potential metal bioavailability, if the molar ratio of SEM for bivalent metals to AVS exceeds one, the toxic heavy metals in that sample are potentially bioavailable. This method uses the same conditions for release of both sulfide and metal from the sediment and thus provides a useful means of assessing the amount of metal associated with sulfide. |