Record Display for the EPA National Library Catalog

RECORD NUMBER: 376 OF 2822

OLS Field Name OLS Field Data
Main Title Collection Efficiency Evaluation of Mercury-Trapping Media for the SASS Train Impinger System.
Author Shendrikar, A. D. ; Damle, A. ; Gutknecht, W. F. ;
CORP Author Research Triangle Inst., Research Triangle Park, NC.;Industrial Environmental Research Lab., Research Triangle Park, NC.
Year Published 1984
Report Number EPA-68-02-3626; EPA/600/7-84/089;
Stock Number PB84-243112
Additional Subjects Samplers ; Air pollution ; Traps ; Performance evaluation ; Storage ; Field tests ; Mercury(Metal) ; Temperature ; Design criteria ; Gas generators ; Atomic spectroscopy ; SASS train impinger systems ; Air pollution sampling
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB84-243112 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/23/1988
Collation 49p
Abstract
The report gives results of an investigation of the collection efficiencies of the popularly used media in the SASS train impinger assembly. A simple mercury-vapor generator system, based on saturation of air with mercury vapor at a fixed temperature, was assembled. Performance evaluation of the system indicates that stable atmospheres of mercury can be generated with the equilibration temperatures controlled by Graham condensers. By repeated sampling and analysis of the generated atmospheres and by calibration of an on-line atomic absorption spectrometer (AAS), the absorbance readings can be converted directly into mercury concentrations; i.e., micrograms per cubic meter. Sample storage stability and field use tests appear to be the next steps in validating the acidified medium as being acceptable for use in the SASS train system.