Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Development of the Gold Amalgamation Sampling and Analytical Procedure for Investigation of Mercury in Stack Gases.
Author Kal, G. William ; Baldec, Charles ;
CORP Author TraDet, Inc., Columbus, Ohio.
Year Published 1972
Report Number EPA-68-02-0341; 1171;
Stock Number PB-210 817
Additional Subjects ( Mercury ; Gas sampling) ; ( Air pollution ; Mercury) ; Coal ; Flue gases ; Combustion products ; Sulfur dioxide ; Spectrochemical analysis ; Mercury amalgams ; Particles ; Quantitative analysis ; Gas analysis ; Gold alloys ; Trace elements ; Errors ; Atomic spectroscopy ; Air pollution detection
Library Call Number Additional Info Location Last
NTIS  PB-210 817 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 91p
The objective was to study methods of sampling for mercury in gas streams containing high SO2 concentrations. The ultimate objective was to develop a sampling procedure adaptable to copper-zinc smelters as well as fossil-fuel fired plants. Gold forms a strong amalgam with mercury resulting in its use here to quantitatively adsorb mercury from a gas stream. Mercury amalgamation accompanied by a flameless atomic absorption mercury procedure was utilized. The collection procedure consists of modifying a standard EPA isokinetic sampling train, utilizing two modified impingers containing 10 grams of gold chips to collect the mercury vapor as an amalgam. Particulates containing mercury are collected on a fiber glass filter upstream of the gold amalgam. The analytical procedure consists of transferring the modified impinger containing the mercury amalgam to an induction furnace. The mercury concentration is calculated from a peak obtained on the strip chart recording of the atomic absorption pattern. Accurate results are obtainable from stack gases within two days of on-site sampling.