Wednesday Afternoon
2:10
Symposium: M e c h a n i s m s in SFE (Arranged by M. E. McNally)
2:30
R o o m M5, North Hall M. E. McNally, Presiding
2:50
1:30 1:35
2:15 2:55 3:50
4:30
Introductory Remarks. M. E. McNally (740) Factors Controlling SFE Rates and Recoveries from Heterogeneous Sam ples. S. B. Hawthorne, J. L. Langenfeld, M. D. Burford, D. J. Miller, V. Schmitt, Y. Yang, J. Pawliszyn, A. A. Clifford, K. D. Bartle (741) Comprehensive Model for SFE. K. D. Bartle, A. A. Clifford, D. Walker (742) SFE of Foods: Approaches and Mechanisms. J. W. King, J. H. Johnson, K. S. Nam, J. M. Snyder, S. L Taylor (743) Analyte Solubility Influences on Mechanisms in SFE. M. E. McNally, C. M. Deardorff, D. G. Hoffman, C. L Rankin (744) Theoretical and Experimental In vestigation of Mechanisms in SFE. J. Pawliszyn, J. L Langenfeld, Z. Miao, D. J. Miller, S. B. Hawthorne
GC: Food a n d Fragrance Analysis R o o m M1A, North Hall T. McKaveney, Presiding 1:30
1:50 2:10
2:30
2:50
3:25 3:45 4:05
4:25
4:45
(805) Analysis of Trace Components Present in Grain Neutral Spirits and Commercial Vodkas. J. W. Walsh, B. Illingsworth (806) Combined GC/MS, GC/FID, and Sniffer Port Analysis of Food Volatiles. C. C. Grimm (807) Trace Analysis in Food Products of Off-Flavors and Contaminants Using Headspace GC-AED. X. J. Cai, J. J. Sullivan, B. Quimby (808) Headspace Analysis of Growing Plant Aromas. D. H. McMahon, W. Goldner, J. Heydel, R. Duprey (809) Applications of Automated SPME/ GS/CIMS and SPME/GC/MS/MS in Foods and Pharmaceuticals. J. R. Berg, C. K. Huston (810) Performance Characterization of Bonded Polyethylene Glycols (Carbowax) as GC Stationary Phases. D. Cavender (811 ) Simplified Automatic Method for Determination of N- Methylcarbamates in Milk. K. M. Williams, A. K. Vickers (812) Extremely High-Percentage Cyanopropyl Stationary Phases for Capillary GC of cis-trans Fatty Acid Methyl Esters. M. Dinnauer (813) Development of Single Operating Conditions for Nitrogen/Protein Determi nation by Combustion Regardless of Sample Matrix. T. Szakas, W. Oakes, M. Baccanti (814) Characterization of Pathogenic Mi croorganisms Using Pyrolysis HighResolution GC. H. Whittenburg. P. B. Harrington
SPE Methodology Room M6A, North Hall D. E. Hassick, Presiding 1:30
1:50
(854) Automated SPE for HPLC Analysis and Method Development. M. E. Terry, K. Varble, I. Davies, A. G. Mayer, G. Burce (855) Reactivity of Chemically Modified Sorbents for SPE. J. W. Shen, M. F. Burke, R. Rao
3:25 3:45 4:05 4:25 4:45
(856) New Headspace Method for Analy sis of Complex Environmental Samples. Z. Zhang, J. Pawliszyn (857) Automated SPE and Its Application in the Environmental Laboratory. D. S. Williams, M. Cava (858) Evaluation of Rigid Glass-Fiber SPE Concentrator Disks for Environmen tal Analysis. D. D. Blevins (859) Analysis of Environmental Samples Using SPME. R. E. Shirey, V. Mani, W. R. Betz (860) Determination of Short-Chain Fatty Acids in Aqueous Samples by Using SPME. L. Pan, J. Pawliszyn (861) SPE Concentration of Anabolic Ste roids from Biological Matrices. D. D. Blevins, D. M. Kelly (862) Automated SPE/HPLC of Clinical Drugs Using an On-Line Extraction Sys tem. K. C. van Home, G. Haak (863) Automated SPME: The First Year. J. R. Berg
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Thursday Morning Symposium: Advances In Purge-and-Trap GC Methods for the Analysis of VOCs Down to 0.1 ppb (Arranged by J. Q. Walker) Room M5, North Hall J. Q. Walker, Presiding Introductory Remarks. J. Q. Walker (872) Purge-and-Trap GC Comparison of European and American (Static vs. Dy namic Purge-and-Trap) Environmental Methods. T. C. Voice, B. Kolb 9:10 (873) Advances in Trapping Procedures for Indoor Pollutants. C. W. Bayer 9:45 (874) Purge and Trap vs. SPE of VOCs in Environmental Analysis. J. Pawliszyn, B. MacGillivray, P. Fowlie, Z. Zhang 10:35 (875) Purge and Trap Applied to Food, Flavor, and Beverage Applications. W. Coleman III 11:10 (876) Maintaining and Developing Ad vances in Purge-and-Trap GC and GC/MS Systems. G. M. Palentino, G. Marone, P. Busser, R. Dykeman, M. Leifels, T. Vinal
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8:30 8:35
GC: Injection Techniques and Optimizing Performance R o o m M1 A, North Hall M. Conoly, Presiding 8:30
(937) An Improved General Test Mixture for Capillary GC Columns Based on the Grob Test. M. Hastings, M. L. D'Amico 8:50 (938) The Use of Precolumns to Increase the Sample Injection Volume in Capillary Column GC. Z. Yan, J. G. Nikelly 9:10 (939) The Effect of Capillary Column Po sition in Split/Splitless Injectors. D. Rood 9:30 (940) A Leak-Free Press-Tight Connec tor for Fused-Silica Capillaries. B. Rightnour, P. H. Silvis, S. Sponsler 9:50 (941) Developing a Routine GC Mainte nance Schedule to Minimize Downtime and Increase Laboratory Throughput. T. Bloom, C. Vargo 10:25 (942) The Automated Injection of Large Sample Volumes in Capillary GC Using PTV Injection Techniques. A. S. Williams, V. Naughton, P. Ridgeon, A. Cambridge 10:45 (943) Overcoming Sample Matrix Influ ences on Analytical Accuracy: A Minia ture Gas Sample Injector That Achieves Injection Volume Equality. P. H. Johnson, R. S. Minners
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CIRCLE 28 ON READER SERVICE CARD
Analytical Chemistry, Vol. 66, No. 3, February 1, 1994 169 A
