Indoor–outdoor behavior and sources of size-resolved airborne particles in French classrooms

Tran, Dinh Trinh; Alleman, L.; Coddeville, P.; Galloo, J.-C.

doi:10.1016/j.buildenv.2014.06.023

Cited by 34 publications

(31 citation statements)

References 39 publications

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“…The mean CO 2 concentrations were much higher in indoor than outdoor air and the daily limitation of 1000 ppm based on IAQS. The mean concentration of CO 2 (1319 ppm) was higher in the spring hotels than some indoor microenvironments, like schools (502 ppm [4]; 1216 ppm [23]). The concentration of CO 2 was more strongly related to the respiration of the people inside the rooms rather than the intrusion of CO 2 from outdoor air.…”

Section: Resultsmentioning

confidence: 99%

Exposure to Particle Matters and Hazardous Volatile Organic Compounds in Selected Hot Spring Hotels in Guangdong, China

Song

Yan

et al. 2016

Atmosphere

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Abstract:In Guangdong province, many hot springs were exploited and developed into popular places for tourist. In addition, hotels have been set up near hot spring sites to attract people, including local citizens, to spend their spare time inside these so-called "spring hotels". In our study, indoor air quality was investigated in four hot spring hotels in Guangdong province, China. Measured indoor pollutants included CO 2 , CO, PM 10 , PM 2.5 and Volatile Organic Compounds (VOCs). As the result show, high concentrations of carbon dioxide might be attributed to poor ventilation; and the variations of indoor PM 10 , PM 2.5 concentrations were related to occupants' activities. Alpha-pinene and toluene were the most common VOC species in the hot spring hotels other than monocyclic aromatic hydrocarbons like Benzene, Toluene, Ethylbenzene and Xylenes (BTEX), which were at medium levels among the reported indoor pollutants. High cancer risk of benzene in the newly decorated rooms should be seriously taken into consideration in the future. Indoor to Outdoor air concentration ratios (I/O) for CO 2 and VOCs were higher than 1, indicating their strong indoor sources. Negative correlations were found between indoor CO 2 and all the other compounds, and VOCs were shown to be significantly correlated (p < 0.01) to each other, including aromatic hydrocarbons and mono-terpenes. For indoor and outdoor air compounds, correlation coefficients among all compounds did not show a significant correlation, which indicated that these pollutants had different sources. Principal components analysis by SPSS showed that indoor materials, inhabitants' activities and respiration, cleaning products and outdoor sources were the main sources of indoor detected pollutants in hot spring hotels.

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Section: Resultsmentioning

confidence: 99%

Exposure to Particle Matters and Hazardous Volatile Organic Compounds in Selected Hot Spring Hotels in Guangdong, China

Song

Yan

et al. 2016

Atmosphere

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“…Geller et al (2002) points out that activities such as vacuum cleaning, sweeping, dusting furniture and washing carpets account for 50-80% of the particles in a 2-10 µm range in indoor environments. While the contribution of outdoor particles at this size range varies between 10 and 40% and usually decreases as the diameter increases (TRAN et al, 2014).…”

Section: Introductionmentioning

confidence: 91%

Impact of human activities on the concentration of indoor air particles in an antarctic research station

et al. 2018

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Abstractne of the main characteristics of Antarctic buildings is the fact that they are designed mostly with a focus on energy efficiency. Although human activity is a major source of pollution, indoor air quality is not a matter of significant concern during building planning. This study examines the relationship between indoor activities in an Antarctic Research Station and the size distribution of particulate matter. Real-time particle size distribution data is used in conjunction with time-activity data. The activity number ratio is calculated using the mean number of particles found in each size range during each activity divided by the average number of particles found during a period characterized by the absence of human activities. Cooking, the use of cosmetics, waste incineration and exhaust from light vehicles were responsible for significant deterioration of indoor air related to the presence of fine and ultrafine particles. Cleaning, physical exercise and the movement of people were responsible for the emission of coarse particles. This article emphasizes the importance of post-occupancy evaluation of buildings, generating results relevant to the planning and layout of new buildings, especially regarding better indoor air quality.Keywords: Particulate matter. Indoor air quality. Human activities. Size distribution. Antarctic Research Station. Resumo Uma das principais características das construções antárticas é o fato que boa parte do esforço projetual é concentrado na eficiência energética. Embora a atividade humana seja a maior fonte de poluição, a qualidade do ar interior não é uma questão com significativa preocupação durante o planejamento da construção. Este estudo investigou a relação entre as atividades internas em uma Estação de Pesquisa Antártica e a distribuição dos tamanhos das partículas. Dados de distribuição do tamanho das partículas são plotados em tempo real em conjunção com os registros das atividades. A taxa de atividade é calculada usando

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“…Classroom IAQ comprises a wide range of parameters, and although international guidelines have not been defined for classroom IAQ, an international effort has begun to characterize these microenvironments (Annesi-Maesano et al, 2013;Chatzidiakou et al, 2012). Several studies have monitored indoor air concentrations of gaseous compounds (Stranger et al, 2007), particles (Branis et al, 2005;Fromme et al, 2007Fromme et al, , 2008Tran et al, 2012Tran et al, , 2014, semi-volatile organic compounds (Lim et al, 2014;Wu et al, 2010), and allergens (Salo et al, 2009). Other studies have investigated outdoor air contributions Blondeau et al, 2005;Madureira et al, 2012), the role of different ventilation strategies (Geelen et al, 2008;Guo et al, 2008;Rosbach et al, 2013;Santamouris et al, 2008) and the relationships with student health (Daisey et al, 2003;Mendell et al, 2013;Simoni et al, 2011) and performance (Bak o-Bir o et al, 2012;Haverinen-Shaughnessy et al, 2011;Shendell et al, 2004;Twardella et al, 2012;Wargocki and Wyon, 2007).…”

Section: Introductionmentioning

confidence: 99%

“…More recently, Chatzidiakou et al (2015) studied the relationship between CO 2 , ventilation rates (VRs), and selected pollutants in 18 classrooms from six schools in London. In France, some studies have been conducted in schools but only in limited numbers (Annesi-Maesano et al, 2012;Blondeau et al, 2005;Poupard et al, 2005;Tran et al, 2014) or only for a limited number of indoor air pollutants (Michelot et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Assessment of ventilation and indoor air pollutants in nursery and elementary schools in France

et al. 2015

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The aim of this study was to characterize the relationship between Indoor Air Quality (IAQ) and ventilation in French classrooms. Various parameters were measured over one school week, including volatile organic compounds, aldehydes, particulate matter (PM2.5 mass concentration and number concentration), carbon dioxide (CO2 ), air temperature, and relative humidity in 51 classrooms at 17 schools. The ventilation was characterized by several indicators, such as the air exchange rate, ventilation rate (VR), and air stuffiness index (ICONE), that are linked to indoor CO2 concentration. The influences of the season (heating or non-heating), type of school (nursery or elementary), and ventilation on the IAQ were studied. Based on the minimum value of 4.2 l/s per person required by the French legislation for mechanically ventilated classrooms, 91% of the classrooms had insufficient ventilation. The VR was significantly higher in mechanically ventilated classrooms compared with naturally ventilated rooms. The correlations between IAQ and ventilation vary according to the location of the primary source of each pollutant (outdoor vs. indoor), and for an indoor source, whether it is associated with occupant activity or continuous emission.

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Indoor–outdoor behavior and sources of size-resolved airborne particles in French classrooms

Cited by 34 publications

References 39 publications

Exposure to Particle Matters and Hazardous Volatile Organic Compounds in Selected Hot Spring Hotels in Guangdong, China

Exposure to Particle Matters and Hazardous Volatile Organic Compounds in Selected Hot Spring Hotels in Guangdong, China

Impact of human activities on the concentration of indoor air particles in an antarctic research station

Assessment of ventilation and indoor air pollutants in nursery and elementary schools in France

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