固定污染源颗粒物在线监测现状——以济南市为例

于2019年对济南市固定污染源颗粒物在线监测设备的品牌、方法原理和手工监测比对情况进行了分析。结果表明,4种激光前向散射法颗粒物在线设备比对结果符合性较好,带加热功能的采样头可以有效降低水滴的干扰;激光后向散射法颗粒物在线设备比对结果符合性较差,零点漂移达到3. 3%,2/3的手工比对数据绝对误差±5 mg/m3。指出,激光后向散射法设备不适用于超低排放企业,激光前向散射法设备因适用高湿度低量程环境,测量精度高,在济南市的适用性更好。

A Study on Status of Online Monitoring of Particulate Matter from Stationary Sources in Jinan City

The principles of online monitoring equipment for stationary source particulate matter were studied in 2019 in Jinan City, and online monitoring was compared with manual monitoring as well. The results showed that the results of four on line particle monitoring devices based on laser forward scattering method were in good agreement with manual monitoring results, and sampling head with heating function can effectively reduce the interference of water droplets; while the result of on line particle monitoring equipment based on laser back scattering method showed less consistent with manual monitoring results, the zero drift reached a value of 3.3%, and the absolute error of 2/3 manual comparison results were >±5 mg/m³. The equipment based on laser back scattering method is not suitable for ultra low emission enterprises. The equipment based on laser forward scattering method is suitable for high humidity and low range environments, and has high measurement accuracy, and has better applicability in Jinan City.