Abstract
Sorbent tubes, which are packed with active carbon and Tenax-TA, used to sample the non-polar volatile organic compounds (VOCs) in ambient air, are widely accepted for its simple method, high repeatability and stability. In this paper we reported a method to prepare the standard sorbent tubes loaded with VOCs components, which is based on ISO 6145. The standard VOCs mixture gasses are generated by a dynamic volumetric diffusion or permeation method and a mass flow control pump sample system. Experiments indicate that the standard sorbent tubes have a good repeatability, linearity and stability, which are expected being used as certified reference materials in China.
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