摘要：A low noise-type air sampler for semivolatile organic compounds was developed, and applied to measure the termiticide concentrations of indoor air. The following results were obtained : 1) This sampler permits to suck air at about 1.2 l/min with a noise level at 32 dB (A). The suction rate tended to decrease as the room temperature increased (1.0%/deg), however in the suction of indoor air for 24 h, the error in the value of air volume remained less than 5%. 2) The recovery rates of chlordanes, diazinon, chlorpyrifos, fenitrothion, tetrachlorvinphos and pyridaphenthion were 80-92% after air suction for 24 h at 25-30°C. 3) The variations in the value of chlordanes concentrations determined by the successive measurement of a living room air for 20 d were 17%. This indicates that the termiticide levels of indoor air could be well determined by this method. 4) The termiticide concentrations of the indoor air were less than 0.2 μg/m3 in some houses which were treated with termiticide on building 2-4 years ago.
关键词：low noise air sampler;indoor air;semivolatile organic compounds;chlordanes;chlorpyrifos;fenitrothion;tetrachlorvinphos;pyridaphenthion;diazinon
