Indoor Air Contaminants and Their Impact on Respiratory Pathologies

Fernández, L.M. Rodríguez; Álvarez, Ramón Fernández; González‐Barcala, Francisco Javier; Portal, José Antonio Rodríguez

doi:10.1016/j.arbr.2012.11.004

Cited by 35 publications

(31 citation statements)

References 60 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Similar observa-tions were reported previously in urban nurseries (Branco et al, 2015a;Yang et al, 2009;Yoon et al, 2011). Inadequate ventilation may be generated by insufficient air volume, high levels of recirculation, incorrect placement of the ventilation points, and deficient distribution that exits certain areas without ventilation (Fernández et al, 2013). Ambient levels of CO 2 ranged between from 688 to 1100 mg/m 3 at P1 and from 581 to 842 mg/m 3 at P2 (Figure 4b).…”

Section: Comfort Parameterssupporting

confidence: 85%

“…Several investigators have focused on indoor air quality (IAQ) since individuals spend large portion of time indoors. Factors that predomi-nantly affect IAQ include the existence of various indoor emission sources such as various indoor equipment, human activities, emissions released from buildings through its construction materials, infiltration of outdoor air, and ventilation deficien-cies (Fernández et al, 2013;WHO, 2010). Special attention needs to be given to compounds that may produce and/or potentiate the development of adverse health problems (WHO, 2010).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Indoor air quality in preschools (3- to 5-year-old children) in the Northeast of Portugal during spring–summer season: pollutants and comfort parameters

Oliveira

Slezáková

Delerue–Matos

et al. 2017

Journal of Toxicology and Environmental Health, Part A

View full text Add to dashboard Cite

Indoor air quality at schools (elementary, primary) has been the subject of many studies; however, there are still relative few data regarding preschool (3- to 5-year-old children) environments. This investigation determined the concentrations of particulate matter (PM), total volatile organic compounds (TVOC), formaldehyde, carbon monoxide (CO), and ozone (O) as well as the levels of carbon dioxide (CO), temperature, and relative humidity (RH) in the indoor and outdoor air of two preschools situated in different geographical regions of Portugal. The indoor concentrations of TVOC, CO, O, and CO were predominantly higher at the end of school day compared to early morning periods. The TVOC and CO concentrations were higher indoors than outdoors suggesting predominantly an indoor origin. Outdoor air infiltrations were the major contributing source of CO and O to indoor air in both preschools. The concentrations of all pollutants were within the limits defined by national regulations and international organizations, except for TVOC that exceeded 8-12-fold higher than the recommendation of 0.2 mg/m proposed by European Commission. The levels of CO were below the protective guideline of 2250 mg/m (Portuguese legislation); however, the observed ranges exceeded the Portuguese margin of tolerance (2925 mg/m) at the end of school days, indicating the impact of occupancy rates particularly at one of the preschools. Regarding comfort parameters, temperature exerted a significant influence on O concentrations, while RH values were significantly correlated with TVOC levels in indoor air of preschools, particularly during the late afternoon periods.

show abstract

Section: Comfort Parameterssupporting

confidence: 85%

Section: Introductionmentioning

confidence: 99%

Indoor air quality in preschools (3- to 5-year-old children) in the Northeast of Portugal during spring–summer season: pollutants and comfort parameters

Oliveira

Slezáková

Delerue–Matos

et al. 2017

Journal of Toxicology and Environmental Health, Part A

View full text Add to dashboard Cite

show abstract

“…The factors affecting IAQ include lack of ventilation, outdoor air quality, and existence of indoor contaminant sources [14]. However, indoor air contaminants that are generated from sources within the indoor environment (e.g., cleaning and construction materials, furniture, furnishings, chemical products, and other general activities) may lead to higher exposure than outdoor concentrations.…”

Section: Resultsmentioning

confidence: 99%

Indoor Chemical Air Contaminants in Main Prayer Hall during Jumaat Prayer in Mosques with Different Mechanical Ventilation

Rasli¹,

Ramli²,

Ismail³

et al. 2019

IJIE

View full text Add to dashboard Cite

Muslims generally pray five times a day. Every Friday, adult male Muslims congregate to perform Jumaat prayer, causing increased number of worshippers in mosques and vehicle movements. Consequently, indoor chemical air contaminants are produced inside and outside mosques. This study evaluated the compliance of indoor chemical air contaminants (CO, O3, TVOC, CH2O, and PM10) during Jumaat and Asar prayers in two mosques having different mechanical ventilations (i.e., air conditioning and non-air conditioned system) with the guideline limit recommended by Malaysia's Industrial Code of Practice. Chemical air contaminants were monitored from 1200H to 1700H in the air-conditioned mosque and from 1200H to 1730H in the non-air conditioned system mosque, which were the times for Jumaat and Asar prayers. The monitoring was conducted from November 2016 to March 2017, during the Northeast monsoon. Results showed that the mean concentrations of the four chemical air contaminants in both mosques did not exceed the acceptable guideline limit. The mean CO, TVOC, CH2O, and PM10 concentrations in the air-conditioned mosque were 0.29 ppm, 354.09 ppb, 31.28 ppb, and 13.45 μg/m 3 ; those in the non-air conditioned system mosque were 2.36 ppm, 344.32 ppb, 19.78 ppb, and 49.91 μg/m 3 , respectively. However, the air-conditioned mosque's maximum PM10 concentration of 164.48 μg/m 3 exceeded the acceptable guideline limit of 150 μg/m 3. Moreover, both mosques' mean O3 concentrations of 140 and 80 ppb exceeded the limit of 50 ppb, respectively. These results suggested that the concentrations of three chemical air contaminants (TVOC, O3, and CH2O) in the air-conditioned mosque were higher than those in the non-air conditioned system mosque possibly because of the inadequate ventilation system inside the airconditioned building. Therefore, air-conditioned mosques should have a good ventilation system to provide suitable temperature and humidity for the Jemaah, as well as sufficient amounts of air to remove indoor chemical air contaminants.

show abstract

“…However, lee and Chang 2000reported that indoor pollutant levels could be greater than the outdoor pollutant levels. The factors that affect IAQ include lack of ventilation, poor outdoor air quality, existence of indoor contaminant sources, lack of maintenance, mechanical ventilation and air conditioning (MVAC) installation, water intrusion and resident activity (Fernández et al, 2013;Prihatmanti and Bahauddin, 2014). However, pollutants generated from sources within the indoor environment may lead to higher exposure to indoor air contaminant concentrations in comparison with the outdoors due to the lower air flow in the former.…”

Section: Introductionmentioning

confidence: 99%

Compliance of Indoor Air Contaminants within the Main Prayer Halls of Mosques in Malacca with Malaysia's Indoor Air Quality Standard

Rasli¹,

Ismail²,

Ramli³

et al. 2019

JCDC

View full text Add to dashboard Cite

Results show that the mean concentrations of the nine indoor air contaminants in M1, M2 and M3 did not exceed ICOP's limits, except for the ozone concentration in M3 that exceeded the limit at 0.150 ppm. We conclude that the concentration levels of indoor air contaminants in the studied mosques are in compliance with Malaysia's ICOP and the non-compliance issue with regard to the ozone concentration in one of the mosques is due to the mosque's location in a busy coastal and marine area.

show abstract

Indoor Air Contaminants and Their Impact on Respiratory Pathologies

Cited by 35 publications

References 60 publications

Indoor air quality in preschools (3- to 5-year-old children) in the Northeast of Portugal during spring–summer season: pollutants and comfort parameters

Indoor air quality in preschools (3- to 5-year-old children) in the Northeast of Portugal during spring–summer season: pollutants and comfort parameters

Indoor Chemical Air Contaminants in Main Prayer Hall during Jumaat Prayer in Mosques with Different Mechanical Ventilation

Compliance of Indoor Air Contaminants within the Main Prayer Halls of Mosques in Malacca with Malaysia's Indoor Air Quality Standard

Contact Info

Product

Resources

About