Výsledky vyhledávání - "William D. Dorko"

Traceability of the output concentration of mercury vapor generators

Autor: William D. Dorko, Stephen E. Long, Gerald D. Mitchell, Jennifer Carney, James E Norris, Jeffrey V. Ryan

Publikováno v: Atmospheric Pollution Research. 11:639-645

In response to the environmental impact of mercury and the neuro-toxic risk associated with trophic transfer of methyl mercury to humans, the reduction of mercury emissions from coal-fired electric utilities, a significant anthropogenic source, is no

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4ae7e574dd67b88389f65d55abe908a6
https://doi.org/10.1016/j.apr.2019.12.012

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The NIST Traceable Reference Material Program for Gas Standards

Autor: William D. Dorko, Michael E. Kelley, Franklin R. Guenther

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9e5b17148c632f5bcefafe5a1b83b1c1
https://doi.org/10.6028/nist.sp.260-126rev2013

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Generation and evaluation of test gas mixtures for the Gas-Phase Sulfur Intercomparison Experiment

Autor: Sherry O. Farwell, Timothy J. Haakenson, William D. Dorko, W. Lee Bamesberger, Douglas L. MacTaggart

Publikováno v: Journal of Geophysical Research: Atmospheres. 102:16237-16245

The automated sulfur gas dilution system (ASGDS) was used during the Gas-Phase Sulfur Intercomparison Experiment (GASIE) to generate and analyze test gas mixtures containing pptv levels of SO2 in the presence of various suites of potential measuremen

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ab6b02ca7b1c18c737f6d1969de87985
https://doi.org/10.1029/96jd03676

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Long-term stability of sulfur dioxide permeation tube standard reference materials

Autor: G. D. Mitchell, P. A. Johnson, William D. Dorko

Publikováno v: Fresenius' Journal of Analytical Chemistry. 344:229-233

A series of NIST (National Institute of Standards and Technology) sulfur dioxide permeation tubes from several Standard Reference Materials (SRMs 1625 and 1627) were studied for their long-term permeation characteristics at temperatures of 20, 25 and

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4ad44f4e4b84d08aa38e870434258a07
https://doi.org/10.1007/bf00324980

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Reference NO2calibration system for ground-based intercomparisons during NASA's GTE/CITE 2 mission

Autor: Russell R. Dickerson, L. J. Nunnermacker, Edd Winstead, William D. Dorko, Robert L. Sams, Nathan Yates, Alan Fried, Barry Cadoff

Publikováno v: Journal of Geophysical Research: Atmospheres. 95:10139-10146

An NO2 calibration system, based on a permeation device and a two-stage dynamic dilution system, was designed, constructed, and characterized at the National Bureau of Standards. In this system, calibrant flow entering the second stage was controlled

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::42a604a6bcfd81b3339a0c2cd9b5c766
https://doi.org/10.1029/jd095id07p10139

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Standards for atmospheric measurements

Autor: William D. Dorko, Rance A. Velapoldi

Publikováno v: Fresenius' Journal of Analytical Chemistry. 338:479-485

The following topics based on research performed in the Gas and particulate Science Division of the National Institute of Standards and Technology (Gaithersburg, USA) are reviewed: 1. the process of the development, preparation, and certification of

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e34a1d4da2fcbf367aa3ca3df6543ce9
https://doi.org/10.1007/bf00322522

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Standards development of global warming gas species: methane, nitrous oxide, trichlorofluoromethane, and dichlorodifluoromethane

Autor: George C. Rhoderick, William D. Dorko

Publikováno v: Environmental sciencetechnology. 38(9)

Environmental scientists from federal agencies, such as the National Oceanic and Atmospheric Administration (NOAA), and academia have long suspected that increasing anthropogenic inputs of various trace gases into the atmosphere can cause changes in

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e0ef6e607a7c51d2f5da4774fa3484f0
https://pubmed.ncbi.nlm.nih.gov/15180066

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Results of the Gas-Phase Sulfur Intercomparison Experiment (GASIE): Overview of experimental setup, results and general conclusions

Autor: Donald C. Thornton, David R. Crosley, Paul D. Goldan, Jainguo Wu, Richard L. Benner, Douglas L. MacTaggart, Eric S. Saltzman, Michael S. Gallagher, Norbert Beltz, Ronald J. Ferek, Hilmar A. Stecher, Eric Scheuer, Barry Lefer, Winston T. Luke, Robert W. Talbot, George W. Luther, Udo Krischke, Sherry O. Farwell, William D. Dorko

Publikováno v: Stecher, Hilmar A; Luther, George W; MacTaggart, Douglas L; Farwell, Sherry O; Crosley, David R; Dorko, William D; et al.(1997). Results of the Gas-Phase Sulfur Intercomparison Experiment (GASIE): Overview of experimental setup, results and general conclusions. Journal of Geophysical Research, 102(D13), 16219. doi: 10.1029/97JD01362. UC Irvine: Department of Earth System Science, UCI. Retrieved from: http://www.escholarship.org/uc/item/3zb95613

Seven techniques for the field measurement of trace atmospheric SO2 were compared simultaneously over 1 month in 1994 using samples produced in situ by dynamic dilution. Samples included SO2 in dry air, in humid air, and in air with potentially inter

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ff9cf77a384436a3cc2a1ce956466aff
http://www.escholarship.org/uc/item/3zb95613

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