TSRC, Tob. Sci. Res. Conf., 2022, 75, abstr. 00 (Symposium) Changes in the tobacco industry: 75 years of TSRC WILLIAMSON F. Global Laboratory Services, Wilson, NC, USA Abstract not available....
TSRC, Tob. Sci. Res. Conf., 2019, 73, abstr. 058 USP elemental impurities: limit test for metals in nicotine by ICP-MS LOTFI H.; ARROYO M. Global Laboratory Services, Wilson, NC, USA Nicotine included in e-cigarette formulations usually originates as a 90%+ solution, which is purified further prior to use. While the FDA oversees the tobacco industry, there is currently little regulation regarding the quality of raw materials or...
TSRC, Tob. Sci. Res. Conf., 2018, 72, abstr. 109 An improved method for the determination of sodium propionate in tobacco products WILLIAMSON F.; BAILEY J. Global Laboratory Services, Wilson, NC, USA Sodium propionate is a preservative with fungicidal properties that is often added to tobacco, primarily smokeless tobacco products, to prolong shelf life. Several regulatory agencies, including Health Canada and ANVISA, require the testing of sodium...
CORESTA Meeting, Agronomy/Phytopathology, 2015, Izmir, Turkey, AP 32 CPA residue levels in consecutive C48 cases of Oriental tobacco WESTBERG H.; SPENCER A. Global Laboratory Services, Wilson, NC, U.S.A. Crop protection agents (CPA) can be applied to tobacco at various stages of the production cycle and if CPA residues are present in the product, they can be topic of concern. After tobacco is processed it is normally packed into cases or bales for...
TSRC, Tob. Sci. Res. Conf., 2015, 69, abstr. 48 Method development and validation of selected metals in e-liquid samples BROWN J. Global Laboratory Services, Inc., Wilson, NC USA Over the past several years, the use of electronic cigarettes and devices has increased. Analysis of Harmful and Potentially Harmful Constituents is at a forefront in both the conventional and electronic cigarette industries. The analysis of various...
TSRC, Tob. Sci. Res. Conf., 2013, 67, abstr. 08 Comparison of auto analyzer methods: discrete vs continuous flow. THURSTON D. Global Laboratory Services, Inc., Wilson, NC, USA Chloride, Sugar, Alkaloids, and Nitrate results were compared using a discrete analyzer and a continuous flow auto analyzer. The new generation discrete analyzers are more automated than the continuous flow auto analyzers. In our initial assessment,...
TSRC, Tob. Sci. Res. Conf., 2009, 63, abstr. 10 TSNA method comparison using UHPLC-MS/MS MATHIS J.A.; PO YING YEUNG Global Laboratory Services, Wilson, NC, USA. Method development and optimization was performed for the quantification of tobacco specific nitrosoamines (TSNAs) in tobacco leaf. The objective was to shorten run time and compare the new method to the previous method. The evaluation of method...
Bull. Spec. CORESTA Congress, Manila, 1980, p. 69, A23, ISSN.0525-6240 Effects of varying rates of potassium chloride and sources of potassium on the quality of flue-cured Virginia tobacco leaves (Nicotiana tabacum L. C. MRS-8) PASCUA S.R.JR. University of the Philippines, Laguna, Philippines This study was conducted to determine the effects of varying rates of potassium chloride and sources of potassium on the chemical and physical qualities of flue-cured Virginia tobacco leaves. Specific leaf weight was not affected by increasing...
Tob. Sci., 1972, 16-28, p. 95-97, ISSN.0082-4523 Studies on the chemical evaluation of tobacco quality. III. Evaluation of tobacco quality from gas chromatographic analysis of particulate phase of the cigarette smoke SUGAWARA S,L KOBASHI U.; SAKURAI H. Central Research Institute, Japan Monopoly Corp., Shinagawa-ku, Tokyo, Japan In the gas chromatogram of the particulate phase from flue-cured tobacco smoke, several pairs of peaks were selected and the logarithms of the ratios in the area of the individual pairs were calculated to see their correlation to the corresponding...
Tob. Sci., 1972, 16-55, p. 172-174, ISSN.0082-4523 Why has tobacco smoke bluish color? OKADA T. Central Research Institute, Japan Monopoly Corp., Shinagawa-ku, Tokyo, Japan The light scattering of tobacco smoke was studied theoretically by the computations of exact Mie functions. The computation was carried out by means of the HITAC 8400 computer system for refractive index, m = 1.54, for geometric mean values of the...