Considerations of Volatile Organic Compounds Pollution in Dwellings and Its Measurement and Evaluation

HORI Masahiro, YANG Jianpin

doi:10.24538/jhesj.4.1_61

Volatile organic compounds (VOC) were surveyed in various kinds of dwelling houses in Japan. T (total) VOC, formaldehyde and suspended particulate matter were measured together with the air change rate in nine of the dwellings, and only VOCs were measured in the others. Examples of the concentrations of identified chemical compounds and chemical classes are also shown. The hydrocarbon concentration for 24 hours was monitored in one of them by PAS (photo-acoustic spectrometry). The main items considered were: The relationship between air-change-rate-correction concentrations of TVOC and formaldehyde, and the age of dwellings, concentrations of VOCs detected in the surveys, characteristics of composition of VOC and coexistence of very volatile organic compounds (VVOC) with a boiling point lower than 50℃, time taken to obtain stationary concentration in rooms with no openings; Sampling times and numbers; TVOC measurement as screening test, and FID (Flame ionization detector) and PAS as a TVOC monitor. The measurement of the TVOC concentration after confirming the stationary concentration with a real time monitor or a lapse of 5 hours or more in rooms with no openings was proposed for risk evaluation of VOC exposure. The TVOCs are measured with FID and PAS after separating VOCs from VVOCs in sample air.

Considerations of Volatile Organic Compounds Pollution in Dwellings and Its Measurement and Evaluation

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