浅谈固定污染源废气低浓度颗粒物的测定重量法

A Brief Discussion on the Determination of Low Concentration Particulate Matter in Waste Gas from Fixed Pollution Sources by Gravimetric Method

《固定污染源排气中颗粒物测定与气态污染物采样方法》(GB/T16157-1996)的出台为国家和地区废气的排放测定确立了标准,其中的内容主要包括颗粒物的取样方法、对样品进行测定的方法以及针对测定结果进行计算,为控制污染排放做出了很大的贡献。但此法的测量精度较低,只能测定浓度较高的颗粒物,对低浓度的颗粒物的测定还有待提高。《污染源废气低浓度颗粒物测定重量法》(HJ836-2017)(以下简称《重量法》)则针对此问题提出了改进措施,有效地补足了对低浓度颗粒物测量不准确的短板,提高了测量标准,让污染控制向前迈出了坚实的一步。

Determination of particulate matter and sampling method of gaseous pollutants in the exhaust of fixed pollution sources(GB/T16157-1996)has established the standard for the determination of exhaust gases and wastes in countries and regions.The main contents include the sampling method of particulate matter,the method of sample determination and the calculation of the results,which have made a great contribution to the control of pollution emission.However,the accuracy of this method is low,and only the particulate matter with higher concentration can be measured.The determination of low-concentration particulate matter still needs to be improved.<HJ836-2017(gravimetric method)(hereinafter referred to as gravimetric method)puts forward some improvement measures for this problem.It effectively complements the deficiency of inaccurate measurement of low-concentration particulate matter,raises the measurement standard,and makes a solid step forward in pollution control.