There are several demands and requirements imposed on chemists performing volatile organic analysis (VOC) in today’s environmental laboratory. The first and most important is that the analysis must be performed in compliance with EPA methodologies. Next, there is the continued demand to improve productivity. The key to productivity is to analyze as many samples as possible which meet the required quality assurance criteria in the 12 hours after a successful BFB tune check. The need to re-run samples due to moisture interference and carry-over certainly limits productivity. However, the most limiting factor of all is the length of the purge and trap cycle time. This paper will present the optimum purge and trap system conditions used to overcome these productivity limitations. Analytical results including calibration, accuracy and precision data will be presented for both water and soil matrices.
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