Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Craig J. Williford"'
Autor:
Jessa A. Ellenburg, Craig J. Williford, Shannon L. Rodriguez, Peter C. Andersen, Andrew A. Turnipseed, Christine A. Ennis, Kali A. Basman, Jessica M. Hatz, Jason C. Prince, Drew H. Meyers, David J. Kopala, Michael J. Samon, Kodi J. Jaspers, Boden J. Lanham, Brian J. Carpenter, John W. Birks
Publikováno v:
Atmospheric Environment: X, Vol 4, Iss , Pp - (2019)
Over the past decade, new and emerging technologies in air pollution instrumentation have made it possible to involve students and citizen scientists in air pollution monitoring. Similarly, advances in data communication and transmission have made it
Externí odkaz:
https://doaj.org/article/e9290f88267a4410a89422b72b9ed13a
Autor:
Peter C. Andersen, Andrew A. Turnipseed, Stanley Strunk, John W. Birks, Christine A. Ennis, Craig J. Williford, Brian J. Carpenter
Publikováno v:
Atmospheric Measurement Techniques. 13:1001-1018
A highly portable calibration source of nitric oxide (NO) based on the photolysis of nitrous oxide ( N2O ) supplied by 8 or 16 g disposable cartridges is demonstrated to serve as an accurate and reliable transfer standard for the calibration of NO mo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d9e64abfdbcd8bfb26537964c75e9448
https://doi.org/10.5194/amt-13-1001-2020
https://doi.org/10.5194/amt-13-1001-2020
Autor:
Richard Carrion, John W. Birks, Christian M. Carrico, Caroline Allen, Fabian Macias, Peter C. Andersen, Manvendra K. Dubey, Allison C. Aiken, Samantha L. Gomez, Thom Rahn, Dwayne Salisbury, Andrew A. Turnipseed, Craig J. Williford, Dan Gates
Publikováno v:
Journal of the Air & Waste Management Association. 68:1175-1189
Understanding nitrogen oxides (NOx = NO + NO2) measurement techniques is important as air-quality standards become more stringent, important sources change, and instrumentation develops. NOx observ...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::684a7b21f3e727ea3c622dc0777a6fde
https://doi.org/10.1080/10962247.2018.1487347
https://doi.org/10.1080/10962247.2018.1487347
Autor:
Andrew A. Turnipseed, Christine A. Ennis, John W. Birks, Craig J. Williford, Peter C. Andersen
Publikováno v:
Atmospheric Measurement Techniques, Vol 10, Pp 2253-2269 (2017)
A new solid-phase scrubber for use in conventional ozone (O3) photometers was investigated as a means of reducing interferences from other UV-absorbing species and water vapor. It was found that when heated to 100–130 °C, a tubular graphite scrubb
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7627afe138993bd0d9e5856f04835694
http://www.atmos-meas-tech.net/10/2253/2017/amt-10-2253-2017.pdf
http://www.atmos-meas-tech.net/10/2253/2017/amt-10-2253-2017.pdf
Autor:
John W. Birks, Andrew A. Turnipseed, Peter C. Andersen, Craig J. Williford, Stanley Strunk, Brian Carpenter, Christine A. Ennis
A highly portable calibration source of nitric oxide (NO) based on photolysis of nitrous oxide (N2O) supplied by 8- or 16-g disposable cartridges is demonstrated to serve as an accurate and reliable transfer standard for the calibration of NO monitor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4b18c6b048341de4a16230d04f0ed238
https://doi.org/10.5194/amt-2019-399
https://doi.org/10.5194/amt-2019-399
Autor:
Caroline, Allen, Christian M, Carrico, Samantha L, Gomez, Peter C, Andersen, Andrew A, Turnipseed, Craig J, Williford, John W, Birks, Dwayne, Salisbury, Richard, Carrion, Dan, Gates, Fabian, Macias, Thom, Rahn, Allison C, Aiken, Manvendra K, Dubey
Publikováno v:
Journal of the AirWaste Management Association (1995). 68(11)
Understanding nitrogen oxides (NO
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::b8ed252bc6535690098997f683883044
https://pubmed.ncbi.nlm.nih.gov/29889623
https://pubmed.ncbi.nlm.nih.gov/29889623
Autor:
Stanley Strunk, Andrew A. Turnipseed, Christine A. Ennis, Craig J. Williford, John W. Birks, Peter C. Andersen
Publikováno v:
Atmospheric Measurement Techniques, Vol 11, Pp 4797-4807 (2018)
A highly portable ozone (O3) calibration source that can serve as a U.S. EPA level 4 transfer standard for the calibration of ozone analyzers is described and evaluated with respect to analytical figures of merit and effects of ambient pressure and h
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3ae8926ca52c9997f838f91c1392bc1d
https://doi.org/10.5194/amt-2018-110
https://doi.org/10.5194/amt-2018-110
Autor:
Erick Mattson, Christine A. Ennis, Craig J. Williford, John W. Birks, Peter C. Andersen, Stanley Strunk, Andrew A. Turnipseed
We describe and characterize a modular folded tubular photometer for making direct measurements of the concentrations of nitrogen dioxide (NO2) and specify how this method could be extended to measure other pollutants such as sulfur dioxide (SO2), oz
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::96d72fc13b7358c968e4b8cbcab45929
https://doi.org/10.5194/amt-2018-24
https://doi.org/10.5194/amt-2018-24
Autor:
Kali A. Basman, Brian J. Carpenter, John W. Birks, Christine A. Ennis, Boden J. Lanham, Andrew A. Turnipseed, Peter C. Andersen, Jason C. Prince, Michael J. Samon, David J. Kopala, Jessa A. Ellenburg, Kodi J. Jaspers, Craig J. Williford, Shannon L. Rodriguez, Drew H. Meyers, Jessica M. Hatz
Publikováno v:
Atmospheric Environment: X, Vol 4, Iss, Pp-(2019)
Over the past decade, new and emerging technologies in air pollution instrumentation have made it possible to involve students and citizen scientists in air pollution monitoring. Similarly, advances in data communication and transmission have made it
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5730e967a4c30f30bd0c04d383462c2f
https://doi.org/10.1016/j.aeaoa.2019.100048
https://doi.org/10.1016/j.aeaoa.2019.100048
A new portable instrument has been developed that offers rapid detection of ozone at the ppb level for personal exposure monitoring. The Personal Ozone Monitor is based on the EPA Federal Reference Method of UV absorbance and has the advantage of bei
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::02492ccf1b567f308d3479db4f85a2e2
https://europepmc.org/articles/PMC3065063/
https://europepmc.org/articles/PMC3065063/