伊宁市大气污染物浓度变化规律分析与大气质量评价

以1999年至2004年伊宁市大气污染物监测数据分析伊宁市大气污染物浓度的变化规律,评价大气质量.结果表明采暖期SO2、NO2日平均浓度显著(P0.05)高于非采暖期各自日平均浓度,1月、2月、5月、9月、10月、12月的TSP日平均浓度高于或显著(P0.05)高于其它各月日平均浓度,采暖期降尘月平均浓度低于非采暖期月平均浓度;采暖期SO2日平均浓度分别与NO2日平均浓度和TSP日平均浓度之间正相关,非采暖期TSP日平均浓度与NO2日平均浓度正弱相关.根据大气质量指数,采暖期大气质量处于轻度污染,非采暖期日均大气质量处于清洁.

Analysis of the Changing Tendencies of Atmosphere Pollutants and Assessment of The Atmosphere Quality of Yining City

By citing the data of daily atmosphere monitoring from 1999 to 2004, this paper analyses the changing tendencies of atmosphere pollutants and assesses the atmosphere quality of Yining city. The result shows the average daily densities of SO2 and NO2 in heat-supply periods are respectively (P0.05)higher than those in non-heat-supply periods, the average daily densities of TSP in January, February, May, September, October and December are higher or significantly (P0.05) higher than those in other months, the average monthly densities of dust in heat-supply periods are lower than those in non-heat-supply periods; the densities of SO2 are respectively positive correlated with those of both NO2 and TSP in heat-supply periods, while the densities of TSP and NO2 are weak positive correlated in non-heat-supply periods; according to the air pollution indexes, the atmosphere is slightly polluted in heat-supply periods ,and it is clean in non-heat-supply periods.