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R C Woodcock

Publications and source records attributed to R C Woodcock.

7 recordsLinked to original sources
PubMed2000

CO2 measurements for IAQ analysis.

These examples illustrate the utility of carbon dioxide measurements as a diagnostic tool for indoor air quality. Carbon dioxide is sometimes said to be an unreliable indicator because of uneven mixing. However, even though mixing does occur slowly in very still air, in nearly all cases there is enough air movement that mixing is not a misleading factor for diagnostic purposes. Measurements do have to be recorded with enough context for proper interpretation. For example, to distinguish between the effects of natural and mechanical ventilation. Or to understand how the results are affected by the number of people in the building and what they are doing. Or how they relate to the nature and layout of the HVAC system and how it is adjusted or intended to be used. Carbon dioxide measurements say little about how healthy an indoor environment is. But they can tell a great deal about how comfortable it is and, with good observation, can give important clues as to where to look for factors that may be affecting health. The interaction of subjective and objective elements in the interpretation of CO2 measurements makes them a fascinating and powerful tool in the hands of a careful investigator.

Air Pollutants↗
PubMed1981

Mercury vapor exposure in the dental office does carpeting make a difference?

Data from mercury vapor surveys of 1.064 rooms in dental offices show no difference in ambient breathing zone concentrations of mercury vapor between offices with hard floors and offices with carpets. Laboratory experiments show that either type of floor can be successfully treated to practically eliminate its contribution to employee mercury exposures. The most effective approach to controlling mercury vapor exposures is to prevent contamination of the air and working environment through the disciplined practice of effective mercury hygiene. We believe the dental profession should stress an exposure limit of 0.02 mg/cu m or less as a standard of good practice.

Air Pollutants↗