VOCs标准吸附管制备及性能测试研究

摘要

A method to prepare the standard absorb tubes with VOCs components was developed based on ISO 6145. The standard VOCs mixture gasses were generated by a dynamic volumetric diffusion or permeation method and a mass flow control pump complement system. Experiments indicated that the prepared standard absorb tubes had good repeatability and linearity. Stability experiment proved that the relative standard deviations of detection results of components were less than 1.5%(n=12). The VOCs standard absorb tubes can be used as standard material.%采用多组分挥发性有机物(VOCs)扩散管(渗透管)标准气体和不锈钢吸附管通过多组分动态配气装置(ISO 6145)和气体定量吸收系统制备标准吸附管,通过试验证明,该标准吸附管有很好的一致性和线性.通过稳定性考察证明,用该方法制备的标准吸附管,在密封条件下一年内各组分量值测定结果的相对标准偏差不大于1.5％(n=12).制备的VOCs标准吸附管可以作为标准物质使用.