by Industrial Environmental Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency, Available to the public through the National Technical Information Service in Cincinnati, Ohio, Springfield, Va .
Written in English
|Statement||by D.C. Girvin and J.P. Fox|
|Series||Interagency energy/environment R&D program report -- EPA-600/7-80-130, Research reporting series -- EPA-600/7-80-130|
|Contributions||Fox, J. P, Industrial Environmental Research Laboratory (Cincinnati, Ohio). Program Operations Office, Industrial Environmental Research Laboratory (Cincinnati, Ohio), Lawrence Berkeley Laboratory. Energy and Environment Division|
|The Physical Object|
|Pagination||xiv, 96 p. :|
|Number of Pages||96|
On-line Zeeman atomic absorption spectroscopy for mercury analysis in oil shale gases. Cincinnati, Ohio: Industrial Environmental Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency ; Springfield, Va.: Available to the public through the National Technical Information Service, (OCoLC) author(s): girvln, d.c. on-line zeeman atomic absorption spectroscopy for mercury analysis in oil shale : D.C. Girvin, J.P. Fox. On-line Zeeman atomic absorption spectroscopy for mercury analysis in oil shale gases / By D. C. Girvin, J. P. Fox, Lawrence Berkeley Laboratory. Energy and Environment Division., Ohio) Industrial Environmental Research Laboratory (Cincinnati and Ohio). Atomic absorption spectrometry is the measurement of the absorption of optical radiation by atoms in the gaseous state. Usually only absorptions involving the ground state, known as resonance lines.
Conversely, if a weak field is applied to Theory of Zeeman atomic absorption spectrometry the atomizer, the split a-components of the absorbing vapour will absorb the unshifted analyte-source line to an equal extent. (f) The optical system displays no preference to either polarization of by: Dependence of the differential signal 5 on the magnetic field strength (direct Zeeman effect and longitudinal magnetic field): (a,a') is a signal Sn for a mercury sample with normal isotopic composition; (b,b') is a signal Sc for a mercury sample enriched with ^Hg; and (c) is a signal S, = S^-S^. (Calculation. The accuracy of the method is 20%  Real-time GEM measurements in air were carried out using a portable Lumex (+) analyzer. This device is based on Zeeman Atomic Absorption Spectrometry using High Frequency Modulation of Light Polarization (ZAAS-HFM; ). 2. Instrumentation Atomic absorption spectrophotometric equipment capable of continuum background correction is used in the analysis. A mercury electodeless discharge lamp (EDL) is used as a resonance source. With the EDL, background correction is difficult to achieve; therefore, a trap of concentrated sulfuric acid is used. (Refer to section Gc.).
Zinc is determined by atomic absorption spectrometry by direct aspiration of the sample into an air-acetylene flame. The procedure may be automated by the addition of a sampler and either a strip-chart recorder or a printer or both. 3. Interferences Magnesium at concentrations greater than mg/L interferes unless other cations File Size: KB. Gaseous Hg emissions were measured during the processing of a large modified in-situ oil shale retort (4× m3) in Colorado. A continuous, on-line, g Cited by: 4. This test method can be used for total mercury determination in natural and processed liquid and oil products (gasoline, naphtha, etc.). This test method may be applied to samples containing between ng/mL to ng/mL of mercury. The results may be converted to mass basis. Mercury emissions from a modified in-situ oil shale retort. on-line, gas monitor based upon the principal of Zeeman atomic absorption spectroscopy was the primary analytical method.