What are the most common MVOCs found in problem facilities?
Alternaria alternata and Aspergillus versicolor produced more MVOCs early (day 20), whereas the other four species produced more MVOCs at day 10. Penicillium chrysogenum produced the highest total concentration (34 g/m3); the greatest number of individual MVOCs (six compounds) was produced by Aspergillus niger. Emissions were also compared from three fresh (indoor) isolates of each species. A. alternata isolates emitted 1, 2, or 5 MVOCs; total emissions of the lowest emitting isolate was only 27% as much as the highest emitting isolate. Three compounds were detected from all C. cladosporioides isolates; low:high was 4%. All A. niger isolates emitted 4 MVOCs; low:high was 76%. One A. versicolor strain emitted 6 MVOCs, and the other two emitted 3; low:high was 51%. Two P. chrysogenum strains emitted 6 MVOCs, and the other released 5; low:high 43%. P. brevicompactum strains produced either 5 (2) or 6 (1) MVOCs; the low:high was 37%. There is significant quantitative variation among isolat
