In the mid-1980s, The Getty Conservation Institute (GCI) undertook an extensive environmental research program which included the detection and mitigation of indoor-generated carbonyl pollutants found in museum environments. Carbonyl pollutants were measured in museum galleries, storage areas, display cases, and storage cabinents in locations throughout the United States. The concentrations ranged from less than 0.2 parts per billion (ppb) to nearly 1600 ppb. The highest concentrations were found in areas with little air circulation, such as display cases. Other research focused on evaluation of simple, economical passive, sampling devices (PSDs). The best PSD was the GMD Formaldehyde Dosimeter (GMD Systems, Inc., Hendersonville, PA, USA). This dosimeter uses 2, 4-dinitrophenylhydrazine to trap airborne carbonyl pollutants which are later extracted and analyzed by liquid chromatography. The sensitivity is less than one ppb for 24 hours exposure. The agreement with conventional active sampling methods was 13per thousand. -- CAL