Zobrazeno 1 - 10
of 31
pro vyhledávání: '"Kenneth H. Shafer"'
Autor:
Kenneth H. Shafer, Charles L. Stiff, Michael J. Oldham, Patrick D. Lilly, George J Patskan, Michael K. Thompson, Mohamadi Sarkar, John C. Maloney
Publikováno v:
Journal of Occupational and Environmental Hygiene. 13:275-283
While several reports have been published using research methods of estimating exposure risk to e-cigarette vapors in nonusers, only two have directly measured indoor air concentrations from vaping using validated industrial hygiene sampling methodol
Autor:
Kenneth H. Shafer, Susan E. Plunkett, Michael T. Fisher, Michael J. Oldham, Michael J. Morton
Publikováno v:
Beiträge zur Tabakforschung International, Vol 26, Iss 1, Pp 19-25 (2014)
La performance de l’appareil portable de topographie du fumage CReSSmicro™ v.2.0.0 a été évaluée en milieu contrôlé dans un laboratoire, en utilisant une machine à fumer étalonnée pour générer des topographies du fumage reproductibles
Autor:
Milton E. Parrish, Charles N. Harward, Randall E. Baren, Mark S. Zahniser, David D. Nelson, Quan Shi, J. Barry McManus, Kenneth H. Shafer
Publikováno v:
Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy. 60:3437-3447
A compact, fast response, infrared spectrometer using four pulsed quantum cascade (QC) lasers has been applied to the analysis of gases in mainstream (MS) and sidestream (SS) cigarette smoke. QC lasers have many advantages over the traditional lead-s
Autor:
Randall E. Baren, Charles N. Harward, Kenneth H. Shafer, Quan Shi, J. Barry McManus, Mark S. Zahniser, Milton E. Parrish, David D. Nelson
Publikováno v:
Analytical Chemistry. 75:5180-5190
A compact, fast-response, infrared spectrometer using pulsed quantum cascade (QC) lasers has been applied to the analysis of gases in mainstream and sidestream cigarette smoke. QC lasers have many advantages over the traditional lead salt tunable dio
Publikováno v:
Journal of Analytical and Applied Pyrolysis. 66:155-163
A single puff polycyclic aromatic hydrocarbon (PAH) analysis technique was developed in our laboratory and applied to study PAH formation in each puff during the cigarette smoking process. An impaction trap was used to collect the total particulate m
Publikováno v:
Journal of Analytical and Applied Pyrolysis. 65:137-145
Formaldehyde deliveries in the gas phase of the mainstream cigarette smoke of a single puff were studied using Fourier transform infrared (FTIR) spectroscopy. The lighting puff (first puff) has significantly more formaldehyde than subsequent puffs. T
Autor:
David D. Nelson, Joanne H. Shorter, Milton E. Parrish, Susan E. Plunkett, Mark S. Zahniser, Kenneth H. Shafer
Publikováno v:
Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy. 58:2505-2517
Infrared absorption lines of hydrazine are broad and typically not baseline resolved, with line strengths approximately 100 times weaker than the more widely studied compound ammonia. Hardware and software improvements have been made to a two-color i
Autor:
Joanne H. Shorter, David D. Nelson, Joda Wormhoudt, Milton E. Parrish, Susan E. Plunkett, Mark S. Zahniser, Kenneth H. Shafer
Publikováno v:
Journal of Molecular Spectroscopy. 211:241-247
Infrared line positions, linestrengths, and pressure-broadening coefficients are required to determine absolute trace gas concentrations from high-resolution absorption spectra. We have measured these values for the infrared absorption lines in the
Autor:
Mark S. Zahniser, Joanne H. Shorter, Kenneth H. Shafer, David R. Nelson, Milton E. Parrish, Susan E. Plunkett
Publikováno v:
Vibrational Spectroscopy. 27:53-63
An infrared spectroscopic technique has been developed to measure ammonia, ethylene, and formaldehyde in single puffs of whole cigarette smoke with millisecond resolution. Since formaldehyde levels in smoke decrease with increasing ammonia levels, th
Publikováno v:
Vibrational Spectroscopy. 27:29-42
This paper reports new techniques for smoke analysis for single puffs and during a puff (intrapuff) with minimal adverse effects due to sampling. These new sampling techniques, combined with Fourier transform infrared (FTIR) spectroscopy, offer excel