[1. Lucke, R.B., H.A. Moore, and R.B. Westerberg: Determination of TSNA's from tobacco filler by liquid chromatography mass spectrometry/mass spectrometry; Presentation No. 53 at 54th Tobacco Science Research Conference, September 24–27, 2000, Nashville, TN.]Search in Google Scholar
[2. Risner, C.H. and F.W. Wendelboe: Quantification of tobacco specific nitrosamines in tobacco; Tob. Sci. 38 (1994) 1–6.]Search in Google Scholar
[3. Spiegelhalder, B., S.J. Kubacki, and S. Fisher: A method for the determination of tobacco-specific nitrosamines (TSNA), nitrate and nitrite in tobacco leaves and processed tobacco; Beitr. Tabakforsch. Int. 14 (1989) 135–144.]Search in Google Scholar
[4. Prokopczyk, B., D. Hoffmann, J.E. Cox, M.V. Djordje-vic, and K.D. Brunnemann: Supercritical fluid extraction in the determination of tobacco-specific N-nitrosamines in smokeless tobacco; Chem. Res. Toxi-col 5 (1992) 336–340.]Search in Google Scholar
[5. Prokopczyk, B., M. Wu, J.E. Cox, S. Amin, D. Desai, A.M. Idris, and D. Hoffmann: Improved methodology for the quantitative assessment of tobacco-specific N-nitrosamines in tobacco by supercritical fluid extraction; J. Agric. Food Chem. 43 (1995) 916–922.]Search in Google Scholar
[6. Sharma, A.K., B. Prokopczyk, and D. Hoffmann: Supercritical fluid extraction of moist snuff; J. Agric. Food Chem. 39 (1991) 508-511.]Search in Google Scholar
[7. Bennett, C.B., C.H. Midgett, K.S. Johnston, J.K. Owen, J.C. Welden, S.M. Shanmugan, J.E. Franke, and S. Balasubramanian: An automated analytical method for determination of tobacco specific nitrosamines in tobacco; Smoke Science and Product Technology Presentation No. 33 at 2002 CORESTA Congress, September 22-27, 2002, New Orleans, LA.]Search in Google Scholar
[8. Risner, C.H., J.B. Reece, and W.T. Morgan: The determination of tobacco specific nitrosamines in tobacco: A collaborative investigation of current methodology; in: Recent Advances in the Reduction of Tobacco-Specific Nitrosamines in Leaf and Smoke, Proceedings of a Symposium Presented at the 55th Meeting of the Tobacco Chemists’ Research Confer-ence, Rec. Adv. Tob. Sci. 27 (2001) 47–73.]Search in Google Scholar
[9. ISO 5725-2: 1994(E): Accuracy (trueness and precision) of measurement methods and results – Part 2: Basic method for the determination of repeatability and reproducibility of a standard measurement method, International Organization for Standardization, Geneva Switzerland, 1994.]Search in Google Scholar
[10. Einot, I. and K.R Gabriel: A Study of the powers of several methods of multiple comparisons; J. Am. Statistical Assoc. 70 (1975) 351.]Search in Google Scholar
