Sampling for organic chemicals in workplace atmospheres with porous polymer beads

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Abstract
Porous polymer bead collection columns are frequently used in air pollution measurements. They are also useful for industrial applications when used with miniature personal pumps. Analytical procedures using this type of collection column are described which use thermal desorption for sample recovery followed by GC [gas chromatography] or GC/MS [mass spectrometry] analysis. A means is shown to modify a gas chromatography for this type of analysis. A technique which permits splitting of the collected sample is also described. Precision and accuracy data for recovery of 19 chemicals are presented. Advantages of porous polymer bead procedures included high sensitivity (the total collected sample is analyzed), ease of sample handling and ability to analyze polar materials not recoverable from charcoal.

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