环境空气降尘测定新方法的变化与验证

Changes and Validation of New Methods for Measuring Ambient Air Dust Reduction

本文分析了《环境空气降尘的测定重量法》(HJ 1221-2021)相对于旧标准《环境空气降尘的测定重量法》(GB/T 15265-94)修订的必要性、适用范围的变化、设备和耗材的变化、采样点设置等变化等。对新标准(HJ 1221-2021)进行了检出限、测定下限、精密度及准确度、实际样品等方面的验证。

This article analyzes the necessity,changes in scope of application,changes in equipment and consumables,and changes in sampling point settings of the revised“Gravimetric method for the determination of ambient air dust”(HJ 1221-2021)compared to the old standard“Gravimetric method for the determination of ambient air dust”(GB/T 15265-94).The new standard(HJ 1221-2021)has been validated in terms of detection limit,lower detection limit,precision and accuracy,and actual samples.