Optimizing temperature program and flow rates for apillary GC analysis of EPA‐608 pesticides
作者:
Matthew S. Klee,
Imogene Chang,
期刊:
Journal of High Resolution Chromatography
(WILEY Available online 1991)
卷期:
Volume 14,
issue 1
页码: 18-24
ISSN:0935-6304
年代: 1991
DOI:10.1002/jhrc.1240140106
出版商: Wiley Subscription Services, Inc., A Wiley Company
关键词: Gas chromatography;Dual‐column analysis;Pesticide analysis;Organochlorine pesticides;Temperature optimization;Flow optimization;Resolution mapping
数据来源: WILEY
摘要:
AbstractAn approach is described for optimizing chromatographic conditions for dual‐column analysis of U.S. EPA Method 608 pesticides. Sample throughput for environmental analysis of pesticides can be increased by performing the screening and confirmation analyses at the same time. This requires simultaneous injection, separation, and detection in a GC with dual inlets, columns, and detectors. Resolution maps for flow rate and temperature relationships of poorly resolved peak pairs for 5%‐phenyl methyl silicone and 7%‐cyanopropyl 7%‐phenyl methyl silicone capillary columns are presented. Resolution of target pesticides on the 5%‐phenyl methyl silicone column was much more sensitive to changes in flow and temperature‐ramp rates than was the 7%‐cyanopropyl 7%‐phenyl methyl silicone column. Optimal conditions resulted in a run time of appro
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