工作场所空气中一氧化碳浓度现场测量结果的不确定度评定

Uncertainty Evaluation on the Field Measurement Result of Carbon Monoxide Concentration in the Air of Workplaces

目的探讨工作场所空气中一氧化碳浓度现场测量结果的不确定度评定方法以及不确定度结果的应用。方法采用国家标准GBZ/T160.28-2004和JJF1059-1999的方法,建立工作场所空气中一氧化碳浓度现场测量的数学模型,并对某饮料有限公司锅炉房一氧化碳浓度现场测量结果的各个不确定度分量以及不确定度方差合成进行计算。结果扩展不确定度为U=0.17mg/m3,Ueff=6,P=95%;一氧化碳浓度测定结果为(1.4±0.17)mg/m3。结论锅炉房一氧化碳浓度测定结果符合GBZ/T2.1-2007的规定;该方法可参考用于工作场所空气中一氧化碳浓度等某些检测参数现场测量结果的不确定度评定。

[Objective] To study the uncertainty evaluation method for the field measurement result of carbon monoxide concentration in the air of workplaces and the application of the uncertainty results.[Methods]The methods of national standard GBZ/T 160.28-2004 and JJF 1059-1999 were adopted to build a mathematical model of field measurement of carbon monoxide concentration in the air of workplaces. The uncertainty components and variances of the field measurement result of carbon monoxide concentration in the air of the boiler room of a beverage company were calculated.[Results]The expended uncertainty was U=0.17 mg/m3, Ueff=6, P=95%, and the carbon monoxide concentration was （1.4±0.17） mg/m3.[Conclusion]The result of carbon monoxide concentration of the boiler room accorded with GBZ/T 2.1-2007. And the method could be applied as reference on the uncertainty evaluation of field measurement result of some detection parameters, such as carbon monoxide concentration in the air of workplaces.