Field testing of new aerosol sampling method with a porous curved surface as inlet.
Field testing of new aerosol sampling method with a porous curved surface as inlet.
复制标题
以多孔曲面为入口的新型气溶胶采样方法现场试验
DOI：
10.1080/15428119791012351
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发表时间：
1997
期刊：
影响因子：
--
通讯作者：
Bornschein,RL
中科院分区：
文献类型：
--
作者：
Hauck,BC;Grinshpun,SA;Reponen,A;Reponen,T;Willeke,K;Bornschein,RL
A new aerosol sampling method, utilizing a porous curved surface as the sampling inlet, has recently been developed. Previous laboratory evaluations of this method have demonstrated its important features, such as low wind sensitivity and good filter collection uniformity. In this study a prototype incorporating the new method was evaluated in the field as a stationary and personal sampling device. The small sampler, utilizing a 25-mm filter is called the button aerosol sampler and was evaluated for collecting total airborne dust and fungal spores. The study was performed in nine poorly maintained inner-city houses during environmental cleanups at different cleanliness levels. The button sampler was used in parallel with the standard 37-mm closed-face filter cassette. Four collocated samplers of each type were tested at all sites as stationary samplers, and three samplers of each type were tested at two sites as personal samplers. Aerosol samples were collected on filters and analyzed using the gravimetric method for total dust and epifluorescence microscopy for fungal spores. The average particle concentration values measured with the button sampler and with the standard sampling cassette were found to correlate well within ranges of 101—103μg/m3for total dust and 103—105spores/m3for airborne fungi. The measurement results obtained with the new button sampler showed lower intersample variations of the measured concentration levels and higher uniformity of the particle deposits on the filters than those obtained with the standard cassette.
