Výsledky vyhledávání - "John E. Sigsby"

Detailed hydrocarbon and aldehyde mobile source emissions from roadway studies

Autor: Fred D. Stump, David L. Dropkin, John E. Sigsby, John Duncan, William Ray, Silvestre B. Tejada, Roy B. Zweidinger

Publikováno v: Environmental sciencetechnology. 22(8)

A field study was conducted along US Highway 70 near Raleigh, NC, to evaluate methods for estimating emission factors and, in particular, for determining volatile organic carbon (VOC) species emitted from traffic. Integrated samples were collected 1m

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5a235ec73f6cd9815555aae7c9a7d6df
https://pubmed.ncbi.nlm.nih.gov/22195719

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Resolution of apparent underestimation in flame ionization detector hydrocarbon analysis

Autor: John E. Sigsby, David L. Dropkin, Richard Snow

Publikováno v: Environmental Science & Technology. 24:818-821

In a previous experimental program flame ionization detector (FID) total hydrocarbon analysis was found to yield results 23% lower than the sum of the detailed gas chromatographic analysis. An experimental program was undertaken to verify and explain

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::721340710aa4f0d4d04557880910f29f
https://doi.org/10.1021/es00076a004

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Advanced Emission Speciation Methodologies for the Auto/Oil Air Quality Improvement Research Program - I. Hydrocarbons and Ethers

Autor: Frank Lipari, Jeffrey F. Loo, Walter O. Siegl, Joel F. O. Richert, Arnold Prostak, Trescott E. Jensen, John E. Sigsby

Publikováno v: SAE Technical Paper Series.

An analytical method for the determination of hydrocarbon and ether emissions from gasoline-, methanol-, and flexible-fueled vehicles is described. This method was used in Phase I of the Auto/Oil Air Quality Improvement Research Program to provide em

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::19070ca01d9c45541452c7cdd1034c31
https://doi.org/10.4271/920320

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The application of total hydrocarbon flame ionization detectors to the analysis of hydrocarbon mixtures from motor vehicles, with and without catalytic emission control

Autor: Francis M. Black, Larry E. High, John E. Sigsby

Publikováno v: Water, Air, and Soil Pollution. 5:53-62

The successful application of total hydrocarbon analyzers to the analysis of hydrocarbon mixtures requires linear response with respect to a single calibration compound. Flame ionization detectors configured for total hydrocarbon analysis (premixed f

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::73b39d4dbdc6f2db402aba25997cab0e
https://doi.org/10.1007/bf00431579

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Volatile organic compound emissions from 46 in-use passenger cars

Autor: John Lang, John E. Sigsby, John Duncan, Silvestre B. Tejada, William Ray

Publikováno v: Environmental Science & Technology. 21:466-475

Emissions from automobiles have long been considered a prime source of pollutants involved in smog formation and ozone production. The reactive potential of the species emitted has been studied extensively, and many reactivity schemes have been propo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ea91e0d806bda6605f0e3d1a774097c5
https://doi.org/10.1021/es00159a007

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Fluorescence detection and identification of nitro derivatives of polynuclear aromatic hydrocarbons by on-column catalytic reduction to aromatic amines

Autor: Roy B. Zweidinger, Silvestre B. Tejada, John E. Sigsby

Publikováno v: Analytical Chemistry. 58:1827-1834

Nitro derivatives of polynuclear aromatic hydrocarbons (nitro-PAH) at trace-level concentrations were efficiently reduced to primary aromatic amines on a catalyst column packed with 5-..mu..m alumina that was coated with platinum and rhodium (Pt/Rh).

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a1924c802aa3c52038407ac08a43f918
https://doi.org/10.1021/ac00121a050

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