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An analytical method for volatile organic compounds (VOC) that employs a multisorbent sampler containing, in series, Tenax-TA, Ambersorb XE-340, and activated charcoal is described. The method was evaluated and then used to measure concentrations of VOC at a school and an office building. The sampler quantitatively collects compounds spanning a broad range of boiling points, including highly volatile solvents. The overall precision of the method is better than 10% and often better than 5%. The composition and concentrations of VOC in the two, approximately five-month old, non-residential buildings were similar and also similar to the composition and concentrations in typical residential indoor air. Concentrations of VOC were measured at two ventilation rates in both non-residential buildings, and the data were applied to a single-equation mass-balance model. Apparent specific source strengths for VOC approximately doubled with a six-fold increase in ventilation rate. 17 refs., 4 figs., 4 tabs.

Application of a Multisorbent Sampling Technique for Investigations of Volatile Organic Compounds in Buildings