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首页> 外文期刊>Air quality, atmosphere & health >Size distribution and seasonal variation of size-segregated particulate matter in the ambient air of Raipur city, India
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Size distribution and seasonal variation of size-segregated particulate matter in the ambient air of Raipur city, India

机译：印度赖布尔市周围空气中尺寸分离颗粒物的尺寸分布和季节变化

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摘要

In this study, size-segregated particulate matter samples were collected in Raipur, India from July 2009 to June 2010 by using eight-stage cascade impactor sampler. The annual average concentrations and associated standard deviation of PM10, PM2.5–10, PM2.5, and PM1 were 270.5 ± 105.5, 119.6 ± 44.6, 150.9 ± 78.6, and 72.5 ± 39.0 μg/m3, respectively. The PM10 and PM2.5 levels at Raipur, India were well above the annual National Ambient Air Quality Standards of India of 60 and 40 μg/m3 for PM10 and PM2.5, respectively. Particulate matter concentrations in winter were higher than those in summer and monsoon. Increased energy use and dry atmospheric conditions contributed to increasing particulate matter concentrations in winter, while increased rainfall precipitation contributed to decreasing particulate matter levels in the monsoon. Spearman correlation analysis between PM10 and PM2.5 revealed high correlation coefficients (r = 0.85), implying that PM10 and PM2.5 may have the same source of regions or that they are influenced by the same local conditions. The highest monthly values of air quality index occur in winter and spring, while they are reduced in summer and monsoon. The analysis showed that 25.0% of the days was unhealthy for sensitive people, 47.4% was unhealthy or very unhealthy, while 4.1% was considered as hazardous. A comparison of the exceedance factors indicated that PM10 and PM2.5 was the most significant polluting agent, causing maximum deterioration in the ambient air quality of Raipur, India.
机译：在这项研究中，从2009年7月至2010年6月，在印度赖布尔使用八级级联撞击采样器收集了按大小分类的颗粒物样品。 PM10，PM2.5-10，PM2.5和PM1的年平均浓度及相关标准偏差分别为270.5±105.5、119.6±44.6、150.9±78.6和72.5±39.0μg/ m3。印度赖布尔的PM10和PM2.5水平分别远高于印度的国家环境空气质量年度标准（PM10和PM2.5）分别为60和40μg/ m3。冬季的颗粒物浓度高于夏季和季风。能源使用增加和干燥的大气条件导致冬季颗粒物浓度增加，而降雨降水增加导致季风中颗粒物含量降低。 Sp10和PM2.5之间的Spearman相关分析表明相关系数较高（r = 0.85），这意味着PM10和PM2.5可能具有相同的区域来源或受到相同的局部条件的影响。空气质量指数的每月最高值出现在冬季和春季，而在夏季和季风时则降低。分析显示，敏感人群中25.0％的日子不健康，47.4％的日子不健康或非常不健康，而4.1％的日子被认为是有害的。对这些超标因子的比较表明，PM10和PM2.5是最重要的污染因子，导致印度赖布尔的环境空气质量最大程度地恶化。

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