【摘要】 通过统计烟台市11个监测点位的大气污染成分数据,分析了PM_2.5在各阶段的浓度变化规律,并利用pearson相关性分析系统分析了各个监测站点之间污染变化规律的相关性。研究表明PM_2.5在一天内的时均浓度呈"M"型双峰的变化规律;烟台市年均浓度超过了国家规定的年均浓度限值35.0g/m³,达到了47.0μg/m;另外采暖期PM_2.5的质量浓度是非采暖期的1.27倍;非采暖期PM_2.5占PM₁₀的比重为59%,在采暖期上升到63%,将采暖期与非采暖期做了系统的比对。更多还原

【Abstract】 In this study,the air pollution components data of eleven monitoring sites were collected in Yantai,and the concentration changes of PM_2.5 in each stage were analyzed. The author also analyzed the correlation of the pollution change law among the eleven monitoring sites using pearson correlation analysis system. The result shows that the hourly average concentration of PM_2.5 present a "M"- typed doublet trend. The annual average concentration exceed the national standard35μg / m³ and reached 47. 0μg / m. Moreover,the mass concentration in heating period is 1. 27 times of that in non- heating periods. In non- heating periods,PM_2.5 accounts for 59% of PM₁₀,while in heating period it rises to 63%.更多还原