|Articles|April 1, 2005

LCGC North America

  • LCGC North America-04-01-2005
  • Volume 23
  • Issue 4

Calendar

Calendar

25-28 April 2005

IVT: Computer Validation

Washington, DC.

Contact: www.ivthome.com

1-4 May 2005

96th AOCS Annual Meeting and Expo

Salt Lake City, UT.

Contact: AOCS, e-mail meetings@aocs.org

8-11 May 2005

18th International Symposium, Exhibit and Workshops on Preparative and Process Chromatography, Ion Exchange, Adsorption/Desorption Processes and Related Separations Techniques

Philadelphia, PA.

Contact: Janet Cunningham, Barr Enterprises, P.O. Box 279, Walkersville, MD 21793, tel. (301) 668-6001, fax (310) 668-4312, e-mail janetbarr@aol.comwww.prepsymposium.org

15-18 May 2005

ACS: Discovery and Selection of Successful Drug Candidates

Boston, MA.

Contact: ACS ProSpectives, e-mail news@tcw-media.com http://tcw-media.com/

22-25 May 2005

28th International Symposium on Capillary Chromatography and Electrophoresis

Orleans Hotel and Casino, Las Vegas, NV.

Contact: Liza Hanson, tel. (801) 856-4240, fax (801) 729-1013, e-mail liza_h_cce@yahoo.com

15-18 June 2005

Advances in Structure-Based Drug Discovery

Philadelphia, PA.

Contact: ACS ProSpectives, e-mail news@tcw-media.com http://tcw-media.com/

19-22 June 2005

18th International Symposium on Polymer Analysis and Characterization

University of Sheffield, Sheffield, U.K.

Contact: Barry Hunt, The Polymer Centre, Department of Sheffield S3 7HF, U.K., tel. +44 (0) 114 222 9537, e-mail B.Hunt@Sheffield.ac.ukwww.ispac.org

26-29 June 2005

29th International Symposium on HPLC Separations and Related Techniques

Stockholm, Sweden.

Contact: Stockholm Convention Bureau P.O. Box 6911, SE-102 39 Stockholm, Sweden, tel. 46 8 5465 15 00, fax 46 8 5465 15 99, e-mail: confirmation@stocon.sewww.hplc2005.com

September 2005

Mechanisms of Chemical Toxicity as Applied to Drug Safety Prediction

Washington, DC.

Contact: ACS ProSpectives, e-mail news@tcw-media.com http://tcw-media.com/

15-16 September 2005

14th Sampling, On-Site Analysis, Sample Preparation Conference and Courses

Pittsburgh, PA.

Contact: Barbara Sherman, PACS, Inc., 409 Meade Drive, Coraopolis, PA 15108, e-mail barbpacs@aol.com tel. (800) 367-2587.

18-21 September 2005

IICS-2005: 18th International Ion Chromatography Symposium

Montreal, Quebec, Canada.

Contact: Janet Cunningham, Barr Enterprises, P.O. Box 279, Walkersville, MD 21793, tel. (301) 668-6001, fax (301) 668-4312, e-mail janetbarr@aol.comwww.icsymposium.com

November 2005s

25th International Symposium on the Separation of Proteins, Peptides, and Polynucleotides

Contact:

Janet Cunningham, Barr Enterprises, P.O. Box 279, Walkersville, MD 21793, tel. (301) 668-6001, fax (301) 668-4312, e-mail

janetbarr@aol.com

www.isppp.org

14-17 November 2005

2005 Eastern Analytical Symposium

Somerset, NJ.

Contact: E-mail EASPub@runbox.comwww.eas.org

The deadline for submitting abstracts is 15 April 2005.

30 April-3 May 2006

97th AOCS Annual Meeting and Expo

St. Louis, MO.

Contact: 2211 W. Bradley Avenue, Champaign, IL 61821, tel. (217) 359-2344, fax: (217) 351-8091, www.aocs.org

17 June 2006

30th International Symposium and Exhibit on High Performance Liquid Phase Separations and Related Techniques

Marriott Hotel, San Francisco, CA.

Contact: Janet Cunningham, Barr Enterprises, P.O. Box 279, Walkersville, MD 21793, tel. (301) 668-6001, fax (301) 668-4312, e-mail janetbarr@aol.comwww.hplcsymposium.org

27 August-1 September 2006

17th International Mass Spectrometry Conference

Prague, Czech Republic.

Contact: Conference Secretartiat, Institute of Microbiology Videnska 1083 CZ-142 20 Prague, Czech Republic, e-mail info@imsc2006.orgwww.imsc2006.org

13-16 May 2007

98th AOCS Annual Meeting and Expo

Quebec City, Quebec, Canada.

Contact: 2211 W. Bradley Avenue, Champaign, IL 61821, tel. (217) 359-2344, fax: (217) 351-8091, www.aocs.org

18-21 May 2008

99th AOCS Annual Meeting and Expo

Seattle, WA.

Contact: 2211 W. Bradley Avenue, Champaign, IL 61821, tel. (217) 359-2344, fax: (217) 351-8091, www.aocs.org

Contact: www.ivthome.com


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High-performance liquid chromatography-tandem mass spectroscopy (HPLC–MS/MS) chromatography reveals pyrrolizidine alkaloids (PA)/pyrrolizidine alkaloid N-oxides (PANO) toxin risks in 63 tea samples.
Figure 2. Split injection used to measure triplicate test of MTBE, hexane, o-xylene, and 1-methylnaphthalene comparing different solvents (methanol, methylene chloride) and column insertion distances starting with 0.5 mm, 5.0 mm, 10.0 mm, 15 mm, and 20.0 mm. Methanol had the best performance at the 5.0 mm insertion distance and methylene chloride looked slightly better at the 0.5 mm. We would still recommend not going below the 5.0 mm manufacturer recommended insertion distance.
Revisiting insertion distance for methanol and methylene chloride in GC analysis and confirming that insertion depth strongly affects response and reproducibility.