Relationship of indoor and outdoor air pollutants in a naturally ventilated historical building envelope

2011 ◽  
Vol 46 (7) ◽  
pp. 1460-1468 ◽  
Author(s):  
S. López-Aparicio ◽  
J. Smolík ◽  
L. Mašková ◽  
M. Součková ◽  
T. Grøntoft ◽  
...  
Keyword(s):  
Air Pollutants ◽  
Building Envelope ◽  
Outdoor Air ◽  
Historical Building ◽  
Relationship Of ◽  
Indoor And Outdoor

scholarly journals Respiratory Symptoms and Peak Flow Associated with Indoor and Outdoor Air Pollutants in the Southwest

1985 ◽  
Vol 35 (11) ◽  
pp. 1154-1158 ◽  
Author(s):  
Michael D. Lebowitz ◽  
Catharine J. Holberg ◽  
Barbara Boyer ◽  
Carl Hayes
Keyword(s):  
Air Pollutants ◽  
Respiratory Symptoms ◽  
Peak Flow ◽  
Outdoor Air ◽  
Indoor And Outdoor

scholarly journals Ambient and household air pollution: complex triggers of disease

2014 ◽  
Vol 307 (4) ◽  
pp. H467-H476 ◽  
Author(s):  
Stephen A. Farmer ◽  
Timothy D. Nelin ◽  
Michael J. Falvo ◽  
Loren E. Wold
Keyword(s):  
Air Pollution ◽  
Health Effects ◽  
Air Pollutants ◽  
Epidemiological Studies ◽  
World Health ◽  
Outdoor Air ◽  
Rapid Urbanization ◽  
Adverse Health Effects ◽  
Adverse Health ◽  
Indoor And Outdoor

Concentrations of outdoor air pollution are on the rise, particularly due to rapid urbanization worldwide. Alternatively, poor ventilation, cigarette smoke, and other toxic chemicals contribute to rising concentrations of indoor air pollution. The World Health Organization recently reported that deaths attributable to indoor and outdoor air pollutant exposure are more than double what was originally documented. Epidemiological, clinical, and animal data have demonstrated a clear connection between rising concentrations of air pollution (both indoor and outdoor) and a host of adverse health effects. During the past five years, animal, clinical, and epidemiological studies have explored the adverse health effects associated with exposure to both indoor and outdoor air pollutants throughout the various stages of life. This review provides a summary of the detrimental effects of air pollution through examination of current animal, clinical, and epidemiological studies and exposure during three different periods: maternal (in utero), early life, and adulthood. Additionally, we recommend future lines of research while suggesting conceivable strategies to curb exposure to indoor and outdoor air pollutants.

scholarly journals A Biplot-Based PCA Approach to Study the Relations between Indoor and Outdoor Air Pollutants Using Case Study Buildings

Buildings ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 218
Author(s):  
He Zhang ◽  
Ravi Srinivasan
Keyword(s):  
Relative Humidity ◽  
Air Pollutants ◽  
Quality Data ◽  
Outdoor Air ◽  
School Site ◽  
Outdoor Air Quality ◽  
Residential Unit ◽  
Air Quality Data ◽  
Indoor And Outdoor

The 24 h and 14-day relationship between indoor and outdoor PM2.5, PM10, NO2, relative humidity, and temperature were assessed for an elementary school (site 1), a laboratory (site 2), and a residential unit (site 3) in Gainesville city, Florida. The primary aim of this study was to introduce a biplot-based PCA approach to visualize and validate the correlation among indoor and outdoor air quality data. The Spearman coefficients showed a stronger correlation among these target environmental measurements on site 1 and site 2, while it showed a weaker correlation on site 3. The biplot-based PCA regression performed higher dependency for site 1 and site 2 (p < 0.001) when compared to the correlation values and showed a lower dependency for site 3. The results displayed a mismatch between the biplot-based PCA and correlation analysis for site 3. The method utilized in this paper can be implemented in studies and analyzes high volumes of multiple building environmental measurements along with optimized visualization.

scholarly journals Child exposure to indoor and outdoor air pollutants in schools in Barcelona, Spain

2014 ◽  
Vol 69 ◽  
pp. 200-212 ◽  
Author(s):  
I. Rivas ◽  
M. Viana ◽  
T. Moreno ◽  
M. Pandolfi ◽  
F. Amato ◽  
...  
Keyword(s):  
Air Pollutants ◽  
Outdoor Air ◽  
Child Exposure ◽  
Indoor And Outdoor

Indoor-outdoor relationship of SO2 concentrations in a rural and an urban community of Alberta

2001 ◽  
Vol 28 (S1) ◽  
pp. 163-169 ◽  
Author(s):  
Warren B Kindzierski ◽  
Scott Sembaluk
Keyword(s):  
Outdoor Environment ◽  
Outdoor Air ◽  
Industrial Emissions ◽  
Short Term ◽  
Passive Monitoring ◽  
Short Term Exposure ◽  
Time Of Year ◽  
Relationship Of ◽  
Indoor And Outdoor

Passive monitoring techniques were used to measure 7-day average concentrations of SO2 in indoor–outdoor air in two Alberta communities, Boyle (population 860) and Sherwood Park (population 42 000). Sampling occurred during a 5-week period in late fall, a time of year when SO2 is less reactive in the outdoor environment. Outdoor levels of SO2 at 12 homes in Boyle (median 4.3 µg/m3, range 3.7–5.6 µg/m3) were two times lower than those at 13 homes in Sherwood Park (median 9.9 µg/m3, range 8.2–13 µg/m3). Slightly higher indoor SO2 levels were measured in Sherwood Park homes (median 1.4 µg/m3, range 0.9–5.2 µg/m3) than in Boyle homes (median 0.5 µg/m3, range 0.2–2.3 µg/m3). These results are consistent with the characteristics of the two communities involved in this study. Sherwood Park has many more SO2-related emission sources than in Boyle (i.e., increased vehicle traffic and industrial emissions). Indoor and outdoor SO2 levels measured in both communities were [Formula: see text]13 µg/m3. These levels are considered low compared with benchmark levels intended for protection of people: 365 µg/m3 averaged over 24 h (short-term exposure) or 80 µg/m3 averaged over 1 year (long-term exposure). The median indoor–outdoor SO2 concentration ratio was 0.13 for both communities.Key words: air quality, indoor, outdoor, passive monitoring, sulphur dioxide.

scholarly journals Indoor and Outdoor Air Fungus Bioaerosols in Khorramabad Day Care Child Centers Western of Iran, 2018

2020 ◽  
Author(s):  
Asghar Sepahvand ◽  
Katayan Salim ◽  
Edris Hoseinzadeh ◽  
Khadijeh Jafari ◽  
Rezvan Mohammadrezaei Khorramabadi
Keyword(s):  
Day Care ◽  
P Value ◽  
Indoor Environments ◽  
Outdoor Air ◽  
Care Child ◽  
Number Of Children ◽  
Relationship Of ◽  
The Relationship ◽  
Indoor And Outdoor

Introduction: the aim of this study was to determine the quantity and quality of indoor and outdoor air fungus bioaerosols in Khorramabad day care child centers. Materials and Methods: A total of 180 air samples were collected from 10 centers in 2018. The samples included 7 indoor and 2 outdoor sampling points. The total number of children was 580. Sampling of fungal bioaerosols was performed by the ZEFON pump (ZEFON factory, USA) with a flow rate of 28.3 L/min. The Sabouraud Dextrose Agar containing chloramphenicol was used as the culture medium. Relative humidity and temperature were measured by a Hygro-Thermometer (TES-1360A- Taiwan-made Humidity and temperature meter). Results: The results showed that 96.1 % of the samples were positive and had grown colonies. The highest amount of fungal agents in the indoor air and outdoor air were 175.58 CFU/m3 and 274.56 CFU/m3 in May, while the lowest rates were 3.4 CFU/m3 and 7.8 CFU/m3 in July, respectively. Aspergillus niger and Mucor were the most highly abundant fungus genera, while Fusarium was the lowest one. In all samples, the I/O (indoor/outdoor) ratio was more than 1; so, fungal bioaerosols in indoor environments were dominant than the outdoor fungal bioaerosols. The relationship of fungal bioaerosols with RH and T)°C( was significant (P-value = 0.001). Conclusion: Generally, the amount of contamination is considerable in the studied day care child centers. Therefore, ventilation modification is recommended by a purifier filter. Moreover, the ventilation conditions and favorable air standards should be monitored continuously by supervisory authorities.

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