Teschke K, Hertzman C, Morrison B
Department of Health Care and Epidemiology, University of British Columbia, Vancouver.
Am Ind Hyg Assoc J. 1994 Mar;55(3):245-50. doi: 10.1080/15428119491019096.
Personal respirable (N = 230) and total (N = 237) dust measurements were made in two coastal British Columbia sawmills using a sampling strategy that randomly selected workers from all jobs in the mills over two seasons. Information about job title, department, season, weather conditions, location of the job relative to wood-cutting machines, and control measures also was collected at the time of sampling. Only 16 respirable wood dust samples were above the detection limit of 0.08 mg/m3; all 16 had levels < or = 0.20 mg/m3. Total wood dust concentrations were also low (36% less than the detection limit), with a mean of 0.51 mg/m3, and ranging from < 0.08 to 52 mg/m3. Measurements of exposure taken close to chippers, planers, and multiple saws had the highest total wood dust levels. Sawmill department and booth enclosures also were associated with wood dust concentrations, while local exhaust ventilation and weather conditions were not. Wood dust levels in this study were generally lower than in other studies of this industry, but most sawmill investigations report mean wood dust concentrations lower than those measured in the furniture and cabinetmaking industries, where concerns about wood dust exposures initially were raised.
在不列颠哥伦比亚省沿海的两家锯木厂，采用一种抽样策略对个人可吸入粉尘（N = 230）和总粉尘（N = 237）进行了测量，该策略在两个季节中从锯木厂的所有工作岗位中随机挑选工人。在采样时还收集了有关职位名称、部门、季节、天气状况、工作岗位相对于木材切割机器的位置以及控制措施的信息。只有16个可吸入木尘样本高于0.08毫克/立方米的检测限；所有16个样本的水平均≤0.20毫克/立方米。总木尘浓度也很低（低于检测限的占36%），平均为0.51毫克/立方米，范围从＜0.08至52毫克/立方米。在靠近削片机、刨床和多台锯的位置进行的暴露测量中，总木尘水平最高。锯木厂部门和工作间围护结构也与木尘浓度有关，而局部排风通风和天气状况则无关。本研究中的木尘水平总体上低于该行业的其他研究，但大多数锯木厂调查所报告的平均木尘浓度低于家具和橱柜制造行业所测量的浓度，对木尘暴露的担忧最初就是在家具和橱柜制造行业中提出的。
