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Passive sampling to control air quality in schools: Uptake rate determination and application.
Indoor Air ( IF 4.3 ) Pub Date : 2020-05-12 , DOI: 10.1111/ina.12684 Laura Vallecillos 1 , Anna Borrull 2 , Rosa Maria Marcé 3 , Francesc Borrull 3
Indoor Air ( IF 4.3 ) Pub Date : 2020-05-12 , DOI: 10.1111/ina.12684 Laura Vallecillos 1 , Anna Borrull 2 , Rosa Maria Marcé 3 , Francesc Borrull 3
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In this paper, we provide a detailed description of the application of passive sampling with Carbopack X tubes followed by thermal desorption‐gas chromatography‐mass spectrometry (TD‐GC‐MS) to determine the concentrations of volatile organic compounds (VOCs) in different school environments. The main objective of the study was to monitor VOCs in seven indoor and three outdoor environments at a school in Tarragona, Spain. However, in order to obtain more accurate information, it was necessary to determine the experimental diffusive uptake rates of the target VOCs in indoor settings through parallel passive and active sampling in one classroom. The results showed experimental diffusive uptake rates in the range of 0.38 mL min‐1 and 0.95 mL min‐1 with RSD % below 5% for up to 44 VOCs. The monitoring results showed that ethanol (23.84‐83.16 µg m‐3) and isopropyl alcohol (5.42‐25.92 µg m‐3) were the most common compounds found in indoor environments, with cleaning products as the main emission source. The VOCs i‐pentane and n‐pentane were found at the highest concentrations in the three sampling sites set in the school's playground, and their concentrations were strictly related to combustion processes from automobile traffic.
中文翻译：
被动采样以控制学校的空气质量：吸收率的确定和应用。
在本文中，我们将详细介绍在Carbopack X试管中进行被动采样，然后进行热脱附-气相色谱-质谱（TD-GC-MS）测定不同学校中挥发性有机化合物（VOC）浓度的应用环境。该研究的主要目的是在西班牙塔拉戈纳的一所学校监测七个室内和三个室外环境中的挥发性有机化合物。但是，为了获得更准确的信息，有必要通过在一个教室中进行并行的被动和主动采样来确定室内环境中目标VOC的实验扩散吸收率。结果显示实验扩散吸收率在0.38 mL min -1和0.95 mL min -1范围内RSD％低于5％，最多可提供44个VOC。监测结果表明，乙醇（23.84-83.16微克米-3）和异丙醇（5.42-25.92微克米-3）是在室内环境中发现的最常见的化合物，具有清洁产品为主要发射源。在学校操场上设置的三个采样点中，VOC的异戊烷和正戊烷的浓度最高，其浓度与汽车通行的燃烧过程密切相关。
更新日期：2020-05-12
中文翻译：
被动采样以控制学校的空气质量：吸收率的确定和应用。
在本文中，我们将详细介绍在Carbopack X试管中进行被动采样，然后进行热脱附-气相色谱-质谱（TD-GC-MS）测定不同学校中挥发性有机化合物（VOC）浓度的应用环境。该研究的主要目的是在西班牙塔拉戈纳的一所学校监测七个室内和三个室外环境中的挥发性有机化合物。但是，为了获得更准确的信息，有必要通过在一个教室中进行并行的被动和主动采样来确定室内环境中目标VOC的实验扩散吸收率。结果显示实验扩散吸收率在0.38 mL min -1和0.95 mL min -1范围内RSD％低于5％，最多可提供44个VOC。监测结果表明，乙醇（23.84-83.16微克米-3）和异丙醇（5.42-25.92微克米-3）是在室内环境中发现的最常见的化合物，具有清洁产品为主要发射源。在学校操场上设置的三个采样点中，VOC的异戊烷和正戊烷的浓度最高，其浓度与汽车通行的燃烧过程密切相关。
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