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用平行样法采样是目前测定粉尘浓度的主要方法。探讨平行样品偏差率在粉尘浓度测定中的价值,对于完善粉尘测定方法、提高工作效率具有重要的现实意义。目前国内有学者提出平行样品偏差率应限制在20%以下,否则样品无效,需重新采样。这种提
Sampling with the parallel method is the main method for the determination of dust concentration. To explore the value of parallel sample deviation in the determination of dust concentration is of great practical significance for improving the determination of dust and improving work efficiency. At present, some scholars have proposed that the parallel sample deviation rate should be limited to below 20%, otherwise the sample is invalid and needs to be resampled. This mention