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Biomedical subjects

C W Bayer

Publications and source records attributed to C W Bayer.

5 recordsLinked to original sources

Outdoor air pollution. Asthma and other concerns.

Despite governmental efforts to improve the quality of outdoor air, a significant number of children growing up in the US are exposed to airborne pollutants. It is now recognized that infants generally at risk for atrophy when exposed to specific environmental airborne pollutants are more likely to develop asthma. Once asthma is established, airborne pollutants are important triggers in causing exacerbations. Airborne ozone and suspended articles are the two most important criteria pollutants with respect to exposure prevalence and suspected adverse health effects in US children. Pediatricians should be involved both in community advocacy programs to improve air quality and as knowledgeable practitioners in discussing practical air pollution avoidance strategies with patients and their families.

Adolescent↗

Building related illness involving formaldehyde and other volatile organic compounds.

A large percentage of the occupants in a 96,000 ft2 office building were suffering multiple adverse health symptoms continuing and/or reoccurring for over 4 years. The symptoms were believed to be the result of building related illness. Detailed indoor air quality and product emission studies realed the presence of formaldehyde and volatile organic compounds contamination primarily resulting from furniture constructed of pressed wood products (formaldehyde source) and a chemical deodorizer (volatile organic compound source).

Deodorants↗

Sampling and analysis techniques for trace volatile organic emissions from consumer products.

Comparisons are made of two techniques for the trace analysis of volatile organic compound (VOC) emissions from consumer products: direct on-line sampling and analysis and on-line solid sorbent collection followed by off-line analysis. Two types of direct analyses are examined. The first consists of direct injection of emissions from a sample loaded environmental chamber into a gas chromatograph equipped with a flame ionization detector (FID) for compound identification. Direct injection of headspace collected emissions into a gas chromatograph equipped with a mass selective detector is the second direct method scrutinized. The more traditional technique of solid sorbent collection of the volatile organic emissions followed by thermal desorption (TD)/gas chromatographic (GC)/mass spectrometric (MS) analysis is compared to both direct on-line methods.

Deodorants↗

Thermal desorption/gas chromatographic/mass spectrometric analysis of volatile organic compounds in the offices of smokers and nonsmokers.

The indoor air quality of the offices of smokers and nonsmokers was surveyed for volatile organic compound identities and concentrations. These results were examined to determine whether environmental tobacco smoke contamination could be distinguished from airborne pollutants outgassing from other sources. It was not possible to positively attribute volatile organic contaminants to environmental tobacco smoke. It was possible to distinguish between smokers' and nonsmokers' offices by determining airborne nicotine levels.

Air↗

Capillary chromatographic analysis of volatile organic compounds in the indoor environment.

The wide variety of volatile organic compounds found in the indoor environment can present a difficult chromatographic problem for the analyst. Capillary-column gas chromatography is required to achieve adequate separation. Thermal desorption/capillary gas chromatography/mass spectrometry is usually the preferred method for broad spectrum analysis of the volatile organics detected indoors. Cryogenic trapping is required for capillary gas chromatographic analysis of the more volatile components.

Air Pollutants↗