环境空气质量不同监测方法的对比

在对环境空气质量的监测中，有些城市存在着人工采样实验室测定和连续自动监测系统监测并行的情况。为考察这两种方法监测结果的异同，于夏季连续20d和冬季连续15d进行了对比监测。监测项目为SO2，NO2和PM10。在对比监测中采取了质量控制措施。对人工采样实验室测定进行了综合采样器流量校正，现场空白样和全程序平行样测定；在自动监测系统中，对SO2，NO2监测仪器作零点，标点校正，PM10监测仪作K0校正。对所测得的209个日均值进行了统计分析，结果表明：SO2，PM10两方面测定结果方差相同，NO2两种方法在冬夏两季方差间均有显著性差异；夏季SO2，PM10，冬季NO2两种方法监测结果一致；冬季SO2，PM10，夏季NO2两种方法监测结果有显著性差异；样品浓度水平及天气状况对两种方法测定结果的差异亦产生较大的影响。

Comparison Between Two Kindsof Monitoring Methods about Ambient Air Quality

Two kindsof methods,oneishand- operatedsamplingand detectinginlaboratoryand,theotheris automatic monitoring. Comparative monitoring wasundertaken duringserious20 daysinsummerand15daysin winter totestthe deviationthetwo methods. Monitoringitems wasSO 2 , NO 2 and PM 10 . Quality controlwastakenintwo methodsrespectively. Thestatisticanalysisabout209 meanvalueperdayindicatedthattheSD wassameintwo meth odsforSO 2 and PM 10 , andtherehadobviousdeviationforNO 2 .Insummer,the monitoringresultsofSO 2 and PM 10 weresame,in winterthe NO 2 weresame.In winterthe monitoringresultsofSO 2 and PM 10 had obviousdeviation,in summerNO 2 had. Monitoringresultwasinfluencedbysampleconcentration and weathercondition.