西安市秋冬季不同空气质量下可培养微生物气溶胶浓度和粒径分布
发布时间：2019-05-22 20:22
【摘要】：利用Anderson空气微生物采样器对西安市2014年9月~2015年1月间可培养微生物气溶胶进行采样、培养,分析不同空气质量下其浓度与粒径变化特征,并对其与颗粒污染物(PM_(2.5)、PM_(10))、气象参数(温度、相对湿度)和其它气态污染物(NO_2、SO_2、O_3)进行主成分+多元线性回归分析.结果显示,可培养细菌和真菌气溶胶浓度范围分别为97~1 909CFU·m~(-3),92~1 737 CFU·m~(-3).随空气污染程度加深,两种微生物气溶胶浓度均呈现增加趋势;细菌气溶胶粒径分布向粗颗粒偏移;而真菌气溶胶在低污染时呈正态分布,高污染时粒径峰值向细颗粒偏移.主成分分析结果显示,可培养微生物气溶胶主要与灰霾、太阳辐射和相对湿度有关.多元线性回归结果表明,细菌气溶胶与灰霾呈显著正相关(P0.05),与太阳辐射呈不显著负相关,与湿度呈不显著正相关;真菌气溶胶与灰霾、太阳辐射和相对湿度均呈不显著正相关.研究结果可以为评估微生物气溶胶所引起的环境与健康效应提供基础数据.
[Abstract]:The cultured microbial aerosols in Xi'an City from September 2014 to January 2015 were sampled by Anderson air microbial sampler, and the variation characteristics of concentration and particle size under different air quality were analyzed. The principal component linear regression analysis was carried out with particle pollutants (PM_), PM_ (10), meteorological parameters (temperature, relative humidity) and other gaseous pollutants (NO_2,SO_2,O_3). The results showed that the concentrations of culturable bacteria and fungi aerosol were 97 鈮，
本文编号：2483229
[Abstract]:The cultured microbial aerosols in Xi'an City from September 2014 to January 2015 were sampled by Anderson air microbial sampler, and the variation characteristics of concentration and particle size under different air quality were analyzed. The principal component linear regression analysis was carried out with particle pollutants (PM_), PM_ (10), meteorological parameters (temperature, relative humidity) and other gaseous pollutants (NO_2,SO_2,O_3). The results showed that the concentrations of culturable bacteria and fungi aerosol were 97 鈮，
本文编号：2483229
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