Exposure assessment of PM2.5 during winter in outdoor and indoor environments of research center: spatial-temporal distribution, carbonaceous compositions and contributions of infiltration

Gao, Peng; Lei, Tingting; Jia, Liming; Song, Yang; Xing, Yanfeng; Zhang, Zhaohan; Yu, Dehai; Feng, Yi; Xing, Baoshan

doi:10.1016/j.scitotenv.2016.08.138

Cited by 23 publications

(6 citation statements)

References 47 publications

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“…Apart from CO 2 concentrations and the risk of COVID-19 infection indoors, IAQ is also becoming a global concern as people spend more than 90% of their time in different indoor settings, such as offices, homes, care centers, schools, universities, shopping centers, etc. [ [36] , [37] , [38] , [39] ]. Other harmful pollutants may also be present in these environments, e.g ., ozone (O 3 ), nitrogen oxides (NO x ), volatile organic compounds (VOCs), or particulate matter (PM).…”

Section: Introductionmentioning

confidence: 99%

Assessment of indoor air quality and risk of COVID-19 infection in Spanish secondary school and university classrooms

Rodrı́guez

Urbieta²,

Velasco³

et al. 2022

Building and Environment

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Section: Introductionmentioning

confidence: 99%

Assessment of indoor air quality and risk of COVID-19 infection in Spanish secondary school and university classrooms

Rodrı́guez

Urbieta²,

Velasco³

et al. 2022

Building and Environment

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“…Some studies have shown that urban population spends ~80% of time indoors [12,13]; therefore, it is of particular importance to make clear the characteristics of indoor PM 2.5 pollution and to evaluate the effect on human health. Indoor PM 2.5 has recently begun to receive research attention, following the detection of some gaseous pollutants in indoor environments (e.g., formaldehyde, NO 2 , volatile organic compounds) [14][15][16][17][18][19][20][21], and studies on PM 2.5 have shown that indoor PM levels exceed the limit recommended by the WHO and the air quality standards of many nations [19,[22][23][24][25][26][27][28][29]. However, these studies were focused on residential houses, school rooms, and hospital rooms [29][30][31][32][33].…”

Section: Introductionmentioning

confidence: 99%

Measurements of Indoor and Outdoor Fine Particulate Matter during the Heating Period in Jinan, in North China: Chemical Composition, Health Risk, and Source Apportionment

Gao

Sun

et al. 2020

Atmosphere

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Fine particulate matter (PM2.5) was simultaneously collected from the indoor and outdoor environments in urban area of Jinan in North China from November to December 2018 to evaluate the characteristics and sources of indoor PM2.5 pollution. The concentrations of indoor and outdoor PM2.5 were 69.0 ± 50.5 µg m−3 and 128.7 ± 67.9 µg m−3, respectively, much higher than the WHO-established 24-h standards for PM2.5, indicating serious PM2.5 pollution of indoor and outdoor environments in urban Jinan. SO42−, NO3−, NH4+, and organic carbon (OC) were the predominant components, which accounted for more than 60% of the PM2.5 concentration. The total elemental risk values in urban Jinan for the three highly vulnerable groups of population (children (aged 2–6 years and 6–12 years) and older adults (≥70 years)) were nearly 1, indicating that exposure to all of the elements in PM2.5 had potential non-carcinogenic risks to human health. Further analyses of the indoor/outdoor concentration ratios, infiltration rates (FINF), and indoor-generated concentration (Cig) indicated that indoor PM2.5 and its major chemical components (SO42−, NO3−, NH4+, OC, and elemental carbon) were primarily determined by outdoor pollution. The lower indoor NO3−/SO42− ratio and FINF of NO3− relative to the outdoor values were due to the volatility of NO3−. Positive matrix factorization (PMF) was performed to estimate the sources of PM2.5 using the combined datasets of indoor and outdoor environments and revealed that secondary aerosols, dust, cement production, and coal combustion/metal smelting were the major sources during the sampling period.

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“…Due to fine particle deposition, PBDEs bind on particulate matters with aerodynamic diameter less than 2.5 µm, PM 2.5 , respectively (Mandalakis et al, 2009;Li et al, 2015a). Numerous studies have been conducted to investigate PM 2.5 levels due to the possibility of its relatively small particles being deposited more deeply into the lungs causing respiratory ailments and diseases, and other negative health problems Guo et al, 2015a;Li et al, 2015b;Shi et al, 2015;Gao et al, 2016). People with known history of cardiopulmonary problems face a higher risk of mortality due to the increasing PM 2.5 concentration in the atmosphere and so is the prevalence of respiratory problems in normal people (Dominici et al, 2006;de Oliveira et al, 2012;Xing et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Indoor and Outdoor Concentrations of Polybrominated Diphenyl Ethers on Respirable Particulate in Central and Southern Taiwan

Chao

Que

Gou

et al. 2016

Aerosol Air Qual. Res.

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High levels of fine particulate (PM 2.5 ) in indoor and outdoor air have globally threatened human health and environment. There are still few studies which concern on the emerging persistent organic pollutants like polybrominated diphenyl ethers (PBDEs) bound on PM 2.5 . The aim of this study was to investigate PBDEs in PM 2.5 in various outdoor (metropolis, industrial, and rural areas) and indoor (library, rail station, hospital, supermarket, department store, and office) environments. PM 2.5 -bound PBDEs was analyzed by high resolution gas chromatography/high resolution mass spectrometry after PM 2.5 was collected. Mean levels of PM 2.5 -bound Σ 14 PBDEs were 79.0 and 116 pg m -3 in outdoor and indoor air, respectively. Compared to other outdoor locations, the industrial sites, Taixi (169 pg m -3 ) in particular, has the highest PM 2.5 -bound PBDEs levels which might be attributed to nearby industrial activities and indoor to outdoor migration behaviors. For indoor air, PM 2.5 -bound PBDEs mean concentrations (libraries, rail stations, department stores, offices, hospitals, and supermarkets) were found to be 357, 35.3, 50.2, 73.2, 59.2, and 124 pg m -3 , respectively. The high indoor PM 2.5 -bound PBDEs levels found in libraries are heavily affected by the presence of indoor electronic equipment or other consumer products. Similarly, this is also true for supermarkets which merchandise electronic consumer products. Although the abundant congener of deca-BDE consisted of 74.7% and 48.03% of Σ 14 PBDEs in the indoor and outdoor air, respectively, nona-BDEs predominantly contributed 11.6% in the indoors while tri-and tert-BDES contributed 11.3% and 16% in the outdoors. Higher brominated PBDEs are more likely due to their emission from electronic surfaces while lower brominated PBDEs are products of photochemical degradation. Other factors affecting both the indoor and outdoor air PM 2.5 -bound PBDE homologue levels such as migration behaviors might also be considered.

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Exposure assessment of PM2.5 during winter in outdoor and indoor environments of research center: spatial-temporal distribution, carbonaceous compositions and contributions of infiltration

Cited by 23 publications

References 47 publications

Assessment of indoor air quality and risk of COVID-19 infection in Spanish secondary school and university classrooms

Assessment of indoor air quality and risk of COVID-19 infection in Spanish secondary school and university classrooms

Measurements of Indoor and Outdoor Fine Particulate Matter during the Heating Period in Jinan, in North China: Chemical Composition, Health Risk, and Source Apportionment

Indoor and Outdoor Concentrations of Polybrominated Diphenyl Ethers on Respirable Particulate in Central and Southern Taiwan

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