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Indoor and outdoor concentrations of benzene, toluene, ethylbenzene and xylene in some Italian schools evaluation of areas with different air pollution
Atmospheric Pollution Research ( IF 3.9 ) Pub Date : 2020-08-11 , DOI: 10.1016/j.apr.2020.08.007
Patrizia Lucialli , Samuele Marinello , Elisa Pollini , Meri Scaringi , Stefano Zauli Sajani , Stefano Marchesi , Liliana Cori

The air quality of indoor environments is an aspect of great importance and of growing interest, particularly considering the length of time that people stay in confined spaces. The objective of this study was to study the indoor and outdoor concentrations of benzene, toluene, ethylbenzene and xylene (BTEX) in 8 Italian schools, many of which are located in some of the most highly polluted areas in Italy. This wanted to provide useful information for understanding the status of air quality in sensitive indoor and outdoor areas (schools) and to support the development of recommendations and indications useful to territorial administrations in the improvement of environmental quality strategies. The sampling campaigns were performed with passive samplers from 2014 to 2015, studying both the hot and cold seasons. A common sampling and analytical protocol was applied in all the study areas. Passive sampler data were also compared with BTEX measurements from fixed-site monitoring stations selected as references for each school. Our findings showed the prevalence of low BTEX concentrations with relatively high values limited to toluene, ethylbenzene and xylene in a few monitoring sites and periods. The mean concentration values of benzene, toluene, ethylbenzene and xylene varied from 0.10 μg/m3 to 10.75 μg/m3, from 0.10 μg/m3 to 28.18 μg/m3, from 0.10 μg/m3 to 11.1 μg/m3 and from 0.10 μg/m3 to 14.45 μg/m3, respectively. In indoor environments, the concentrations were equal to or higher than the values measured outdoors in most cases, frequently reporting I/O ratios greater than 1.



中文翻译:

意大利一些学校对室内和室外苯,甲苯,乙苯和二甲苯的浓度评估不同空气污染的地区

室内环境的空气质量是一个非常重要且日益引起人们关注的方面,尤其是考虑到人们在狭窄空间中停留的时间长度。这项研究的目的是研究8所意大利学校的室内和室外苯,甲苯,乙苯和二甲苯(BTEX)的浓度,其中许多学校位于意大利一些污染最严重的地区。这希望提供有用的信息,以了解敏感的室内和室外区域(学校)中的空气质量状况,并支持制定对领土管理机构有用的建议和指示,以改善环境质量战略。2014年至2015年期间,由被动采样器进行了采样活动,研究了炎热和寒冷的季节。在所有研究领域均采用了通用的采样和分析方案。还将被动采样器数据与固定地点监控站的BTEX测量结果进行比较,这些站点被选作每所学校的参考。我们的发现表明,在一些监测点和监测时期内,普遍存在着较低的BTEX浓度和相对较高的值,仅限于甲苯,乙苯和二甲苯。苯,甲苯,乙苯和二甲苯的平均浓度值从0.10μg/ m3到10.75μg/ m3,从0.10μg/ m3到28.18μg/ m3,从0.10μg/ m3到11.1μg/ m3和0.10μg/ m3到14.45μg/ m3。在室内环境中,大多数情况下浓度等于或高于室外测量的值,通常报告的I / O比大于1。还将被动采样器数据与固定地点监控站的BTEX测量结果进行比较,这些站点被选作每所学校的参考。我们的发现表明,在一些监测点和监测时期内,普遍存在着较低的BTEX浓度和相对较高的值,仅限于甲苯,乙苯和二甲苯。苯,甲苯,乙苯和二甲苯的平均浓度值从0.10μg/ m3到10.75μg/ m3,从0.10μg/ m3到28.18μg/ m3,从0.10μg/ m3到11.1μg/ m3和0.10μg/ m3到14.45μg/ m3。在室内环境中,大多数情况下浓度等于或高于室外测量的值,通常报告的I / O比大于1。还将被动采样器数据与固定地点监控站的BTEX测量结果进行比较,这些站点被选作每所学校的参考。我们的发现表明,在一些监测点和监测时期内,普遍存在着较低的BTEX浓度和相对较高的值,仅限于甲苯,乙苯和二甲苯。苯,甲苯,乙苯和二甲苯的平均浓度值从0.10μg/ m3到10.75μg/ m3,从0.10μg/ m3到28.18μg/ m3,从0.10μg/ m3到11.1μg/ m3和0.10μg/ m3到14.45μg/ m3。在室内环境中,大多数情况下浓度等于或高于室外测量的值,通常报告的I / O比大于1。我们的发现表明,在一些监测点和监测时期内,普遍存在着较低的BTEX浓度和相对较高的值,仅限于甲苯,乙苯和二甲苯。苯,甲苯,乙苯和二甲苯的平均浓度值从0.10μg/ m3到10.75μg/ m3,从0.10μg/ m3到28.18μg/ m3,从0.10μg/ m3到11.1μg/ m3和0.10μg/ m3到14.45μg/ m3。在室内环境中,大多数情况下浓度等于或高于室外测量的值,通常报告的I / O比大于1。我们的发现表明,在一些监测点和监测时期内,普遍存在着较低的BTEX浓度和相对较高的值,仅限于甲苯,乙苯和二甲苯。苯,甲苯,乙苯和二甲苯的平均浓度值从0.10μg/ m3到10.75μg/ m3,从0.10μg/ m3到28.18μg/ m3,从0.10μg/ m3到11.1μg/ m3和0.10μg/ m3到14.45μg/ m3。在室内环境中,大多数情况下浓度等于或高于室外测量的值,通常报告的I / O比大于1。1μg/ m3和0.10μg/ m3至14.45μg/ m3。在室内环境中,大多数情况下浓度等于或高于室外测量的值,通常报告的I / O比大于1。1微克/立方米和0.10微克/立方米至14.45微克/立方米。在室内环境中,大多数情况下浓度等于或高于室外测量的值,通常报告的I / O比大于1。

更新日期:2020-10-15
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