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OLS Field Name OLS Field Data
Main Title Reliability Study of the U.S. EPA's Method 101A: Determination of Particulate and Gaseous Mercury Emissions.
Author Wilshire, F. W. ; Knoll, J. E. ; Ward, T. E. ; Midgett., M. R. ;
CORP Author Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Research and Exposure Assessment Lab.
Publisher c1991
Year Published 1991
Report Number EPA/600/D-91/219;
Stock Number PB91-233361
Additional Subjects Mercury(Metal) ; Vapors ; Particulates ; Incinerators ; Reliability ; Interfering elements ; Ammonia ; Hydrogen chloride ; EPA Method 101A
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB91-233361 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 11/26/1991
Collation 14p
Abstract EPA Method 101A applies to the determination of particulate and gaseous mercury emissions from sewage sludge incinerators and other sources. Concern has been expressed that ammonia or hydrogen chloride (HC1) when present in the emissions, interferes in the analytical processes and produces a high positive bias in the mercury results. Because HCl and ammonia are present in the effluents from municipal waste incinerators where chlorinated plastics are combusted, the present laboratory study was conducted to investigate these concerns. A standard EPA Method 101A sampling train was employed in the study. The source of Hg vapor consisted of two certified Hg permeation tubes. The mercury vapor was directed into a stream of filtered laboratory air and sampled at rates varying between 15 and 30 L/min. Approximately 1 m3 of gas was collected in each sample run. A side stream of ammonia vapor was added to the gas sampled in half of the runs to determine the effects of that substance. Mercury recoveries with and without added ammonia were 97.3 + or - 3.4 and 96.8 + or - 1.3%, respectively. Application of the Aspin-Welch test for the difference between two sample means showed that the difference was not statistically significant. The effect of added HCl was also studied. Mercury and HCl were added to samples of the acid permanganate reagent and subjected to the Method 101A analytical procedure. Mercury recoveries were 100.0 + or - 5.2, 101.3 + or - 8.5, and 98.0 + or - 5.4% for 0, 1, and 7 g of added HCl, respectively, indicating no effect of HCl on the analysis.
Category Codes 68A; 99A
NTIS Prices PC A03/MF A01
Primary Description 600/09
Document Type NT
Cataloging Source NTIS/MT
Control Number 129822307
Origin NTIS
Type CAT