在生产条件下,评定工业毒物对工人健康危害的程度,通常采用厂房或工作地点空气中毒物浓度的测定方法。但由于空气中毒物的浓度受生产条件和许多外界因素的影响很不稳定,同时,有些工人的工作地点有时因生产需要又不固定。所以,在这种情况下,仅仅依据少数空气样品的测定结果来评价工人接触毒物的情况,并不完全符合实际情况。如能周密妥善地设计出采样的方法,反复地进行采样,详细地进 Under production conditions, the degree to which industrial toxicants are assessed as hazardous to the health of workers is usually determined by measuring the concentration of airborne poisons in the plant or workplace. However, the concentrations of airborne poisons are unstable due to the conditions of production and many external factors. In the meantime, some workers sometimes have workplaces that are not fixed because of their production needs. Therefore, in this case, the assessment of workers’ exposure to poison solely on the basis of the measurement results of a few air samples is not entirely in conformity with the actual situation. If carefully and properly designed sampling methods, repeated sampling, detailed into