Evaluation of metallic foils for preconcentration of sulfur-containing gases with subsequent flash desorption/flame photometric detection

Ag, Ni, Pd, Pt, Rh, and W foils were examined for their collective efficiencies toward seven sulfur-containing gases, i.e., H/sub 2/S, CH/sub 3/SH, CH/sub 3/SCH/sub 3/, CH/sub 3/SSCH/sub 3/, CS/sub 2/, COS, and SO/sub 2/. Low- and sub-part-per-billion (v/v) concentrations of these individual sulfur gases in air were drawn through a fluorocarbon resin cell containing a mounted 30-mm x 7-mm x 0.025-mm metal foil. The preconcentrated species were then thermally desorbed by a controlled pulse of current through the foil. The desorbed sample plug was swept in precleaned zero air from the fluorocarbon resin cell to a flame photometric detector. Sampling flow rate, ambient temperature, sample humidity, and common oxidants were examined for their effects on the collection efficiencies of these sulfur compounds on platinum and palladium foils. Analytical characteristics of this metal foil collection/flash desorption/flame photometric detector (MFC/FD/FPD) technique include a sulfur gas detectability of less than 50 pptr (parts per trillion) (v/v), a response repeatability of at least 95%, and field portable collection cells and instrumentation. The results are discussed both in terms of potential analytical applications of MFC/FD/FPD and in terms of their relationship to characterized models of gas adsorption on solid surfaces. 33 references, 6 figures,more » 3 tables.« less

[1]  A. Bandy,et al.  Determination of part-per-trillion by volume levels of atmospheric carbon disulfide by gas chromatography/mass spectrometry , 1985 .

[2]  P. Steudler,et al.  Determination of reduced sulfur gases in air by solid adsorbent preconcentration and gas chromatography , 1984 .

[3]  D. Hercules,et al.  Analytical Chemistry of Surfaces: Part II. Electron Spectroscopy. , 1984 .

[4]  Jacek Namies´nik.  Generation of standard gaseous mixtures , 1984 .

[5]  U. Köhler,et al.  Surface reactions of sulfur with oxygen on Pt(111) , 1982 .

[6]  W. Jaeschke,et al.  The Detection of Low Atmospheric SO2 Concentrations with a Chemiluminescence Technique , 1981 .

[7]  S. O. Farwell,et al.  Determination of total biogenic sulfur gases by filter/flash vaporization/flame photometry , 1980 .

[8]  S. O. Farwell,et al.  Determination of sulfur-containing gases by a deactivated cryogenic enrichment and capillary gas chromatographic system , 1979 .

[9]  D. R. Hitchcock,et al.  Solid adsorbent preconcentration and gas chromatographic analysis of sulfur gases , 1978 .

[10]  T. Fischer,et al.  The adsorption of sulfur on the platinum (100) surface , 1977 .

[11]  A. Bandy,et al.  Atmospheric concentrations of carbonyl sulfide in the southwestern and eastern United States , 1977 .

[12]  S. Penkett,et al.  Measurements of carbonyl sulphide and carbon: Disulphide in the atmosphere , 1977 .

[13]  S. P. Bhatia,et al.  Development of calibration systems for measuring total reduced sulfur and sulfur dioxide in ambient concentrations in the parts per billion range. , 1976, Analytical chemistry.

[14]  H. D. Axelrod,et al.  Filter sampling method for atmospheric sulfur dioxide at background concentrations. , 1975, Analytical chemistry.

[15]  Pierce Rw.  The detection and estimation of airborne sulphur-containing compounds by means of a novel, dry, ultra-rapid, and extremely sensitive method. , 1974 .

[16]  J. Lodge,et al.  Sensitive method for measurement of atmospheric hydrogen sulfide. , 1972, Analytical chemistry.

[17]  James P. Lodge,et al.  Filter method for the measurement of atmospheric hydrogen sulfide , 1971 .

[18]  D. Adams,et al.  Analysis of Sulfur-Containing Gases in the Ambient Air Using Selective Pre-Filters and a Micro-coulometric Detector , 1968 .