Dufresne A, Dion C, Frielaender A, Audet E, Perrault G
Department of Environmental and Occupational Health, School of Public Health, Université de Montréal, Pavillon Marguerite d'Youville, 2375, Chemin de la Côte Ste-Catherine, Montreal, QC H3T 1A8, Canada.
Bull Environ Contam Toxicol. 2009 Apr;82(4):440-3. doi: 10.1007/s00128-009-9661-4. Epub 2009 Jan 30.
Exposure assessment was performed during the abatement of amosite containing material (ACM) and chrysotile containing material (CCM). Mean fibre concentrations (MFC) in breathing zone (BZ) were 20.6+/-7.9 f/cc and 6.3+/-2.2 f/cc during abatements of ACM and CCM, respectively. At the fixed station, MFC were 5.4+/-3.5 f/cc for ACM and 2.9 f/cc+/-1.6 for CCM. For observer's BZ, MFC were 3.1+/-1.3 f/cc (ACM) and 1.8 f/cc (CCM) during the abatement. Though elevated, area and observer-type samples clearly underestimate exposure. Exposure remained unacceptable in the worksite with the class of respiratory protection used.
在清除含铁石棉材料（ACM）和温石棉材料（CCM）的过程中进行了暴露评估。在清除ACM和CCM期间，呼吸区（BZ）的平均纤维浓度（MFC）分别为20.6±7.9纤维/立方厘米和6.3±2.2纤维/立方厘米。在固定监测点，ACM的MFC为5.4±3.5纤维/立方厘米，CCM的MFC为2.9±1.6纤维/立方厘米。在清除过程中，观察者呼吸区的MFC，ACM为3.1±1.3纤维/立方厘米，CCM为1.8纤维/立方厘米。尽管数值有所升高，但区域和观察者类型的样本明显低估了暴露情况。使用的呼吸防护等级下，工作场所的暴露情况仍不可接受。
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