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目的介绍气相色谱法测定工作场所空气中甲苯的结果扩展不确定度的简化评定方法。推广实验室测量结果不确定度的应用。方法确定和计算测定过程各不确定度分量,最后整体合成。结果气相色谱法测工作场所空气中甲苯的扩展不确定度为1.9μg/ml。结论该法评定过程合理,思路简捷,适用于实验室气相法测定扩展不确定度的日常应用。
Objective To introduce a simplified method for the determination of the extended uncertainty of the results of toluene in the air of workplace by gas chromatography. Application of Uncertainty in Promotion of Laboratory Measurement Results. Methods to determine and calculate the uncertainty of the measurement process components, the final overall synthesis. Results The extended uncertainty of toluene in the air at the workplace was determined by gas chromatography to be 1.9 μg / ml. Conclusion The method has a reasonable assessment process and a simple way of thinking. It is suitable for the daily application of extended uncertainty measurement in laboratory gas phase method.