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The GCI Scientific Program has been measuring indoor-generated
pollutants in museum environments—specifically gaseous organic
carbonyl pollutants (formaldehyde, acetaldehyde, formic acid, and
acetic acid)—since the late 1980s. Institute staff have occasionally
had the opportunity to revisit an institution and observe changes
implemented as a result of the GCI's pollution monitoring. One such
institution is the Santa Barbara Museum of Art in Santa Barbara,
California.
In 1988 the Santa Barbara Museum participated in the GCI's first
survey of carbonyl pollutants in U.S. museums. The museum staff
noticed that the internal lock mechanisms of wooden storage cabinets
were corroding and brought this to the attention of the Institute's
Cecily Grzywacz and Dusan Stulik. Air samples taken from the cabinets
confirmed that the corrosion was due to the high levels of formic
acid and acetic acid released from the wood products. When the collections
were surveyed, carbonyl pollutant efflorescence was detected on
a few objects, a finding that further indicated a pollutant problem
in the storage cabinets.
In response to the survey findings, the museum modified the storage
cabinet doors. The center portions of the doors were cut out and
replaced with screens to increase air circulation. Subsequent testing
by Cecily Grzywacz confirmed that these modifications had been successful.
Formic acid was no longer detectable, and the acetic acid concentrations
were reduced by 75 percent. This example demonstrates the impact
of the carbonyl pollution surveys and the initiative of the Santa
Barbara Museum, the usefulness of air sampling, and the importance
of testing to confirm the effectiveness of palliative measures.
In 1993 the Institute's second major carbonyl pollutant survey
was conducted at six museums in Glasgow, Edinburgh, and London,
and at the Rijksmuseum in Amsterdam. Several display case designs
were evaluated at the Rijksmuseum. This monitoring effort indicated
pollutant problems within some cases. Institute scientific staff
returned to the Rijksmuseum in 1994 for a very successful collaboration
in which they monitored the levels of carbonyl pollutants in a series
of newly designed display cases. Monitoring results confirmed that
the new designs by the Rijksmuseum staff improved air quality with
respect to indoor-generated carbonyl pollutants.
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