Baseline Studies of the Global Pollution VIII: The Complex Pattern of C1#x2013;C4Organohalogens in Continental and Marine Background Air

摘要

Adsorption sampling on Tenax GC combined with thermal desorption and cold trap injection allows the analysis of 2-500 liters of air as a single sample. The separation by high resolution gas chromatography and electron capture detection reveals a complex pattern of baseline pollution of C1#x2013;C4organohalogens in clean continental and marine air. Air samples from the Azores and from the Madeira Archipelago#x2014; above and below the trade-wind inversion#x2014;give similar patterns of pollution.