Record Display for the EPA National Library Catalog


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)
Library Call Number Additional Info Location Last
NTIS  PB94-183852 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 22p
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.