Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/24004
Title: Investigating the confidence level of sampling schemes for assessing indoor radon concentration
Authors: Wong, LT 
Mui, KW 
Issue Date: 2005
Publisher: Wiley-Blackwell
Source: Indoor air, 2005, v. 15, no. supp.11, p. 124-124 How to cite?
Journal: Indoor air 
Abstract: The continuous sampling is one of the common approaches for assess-ing indoor radon level. Measurements at various sampling periods, suchas 0.5, 1, 2, 4 or 8 hours, are proposed for the assessment purpose. Itis generally believed that the longer the measurement time, the higherthe confidence level can be obtained. This study proposes an alterna-tive sampling scheme, in which the average radon concentration isobtained from two short sampling periods, that offers a reduction inmeasurement time without any penalty of the confidence level. Anindoor radon concentration database mapped from a typical year-round-monitored open-plan office building in Hong Kong is used to assessdifferent measurement schemes. The probable errors of the samplingschemes deviated from a long-term average value are correlated withthe required measurement time. The result shows that at certain confi-dence levels, the potential reduction in the measurement time of thealternative sampling scheme would be up to 50% as compared withthat of an 8-hour continuous one.
Description: 10th International Conference on Indoor Air Quality and Climate (Indoor Air 2005), Beijing, Peoples R China, 4-9 September 2005
URI: http://hdl.handle.net/10397/24004
ISSN: 0905-6947
EISSN: 1600-0668
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