Preschools’ Indoor Air Quality and Respiratory Health Symptoms among Preschoolers in Selangor

Choo, Chua Poh; Jalaludin, Juliana; Hamedon, Titi Rahmawati; Adam, Nor Mariah

doi:10.1016/j.proenv.2015.10.054

Cited by 20 publications

(12 citation statements)

References 4 publications

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“…Increased exposure to air pollutants from road traffic, industrial, and indoor sources may contribute to phlegm symptoms among children in exposed group (Daud et al, 2018). The finding in this study such that location of school near high-density of traffic has significantly contributed to high prevalence of respiratory health symptoms also supported by the findings from other local studies (Noor Hisyam & Juliana, 2014;Anis et al, 2014;Choo et al, 2015; children in the urban area as compared to the suburban or rural area.…”

Section: Accepted Manuscriptsupporting

confidence: 89%

Genotoxic Effects of Exposure to Urban Traffic Related Air Pollutants on Children in Klang Valley, Malaysia

Hisamuddin

Jalaludin

Yusof

et al. 2020

Aerosol Air Qual. Res.

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Traffic-related air pollutants (TRAPs) are currently increasing due to the increment of vehicle numbers in Malaysia. The emission of pollutants from these vehicles have genotoxic properties that can potentially induce genetic damage in human. In this study, micronuclei assay is used to determine the potential genotoxic exposure by assessing the presence of micronuclei frequency (MN) in buccal cells. The specific objective of this study is to determine the association between TRAPs and frequency of MN among school children in Klang Valley. A comparative crosssectional study was conducted among primary school children (9-11 years old) in high-density traffic area (n=94, Kuala Lumpur) and low-density traffic area (n=94, Hulu Langat). A questionnaire was distributed to the parents to obtain respiratory symptoms information. Buccal cells were analyzed to determine the frequency of micronuclei. Air quality assessment was carried out in a total of 6 schools (consisted of exposed and comparative groups) by using TSI DustTrak DRX Aerosol Monitor 8534 for measurement of PM2.5 and PM10, LaMotte's Model BD Air Sampling Pump for measurement of Nitrogen dioxide (NO2) and Sulphur dioxide (SO2), ppbRAE 3000 for total Volatile Organic Compound (TVOC) and TSI Q-TRAK 7565 for measurement of Carbon dioxide (CO2) and Carbon monoxide (CO). The concentrations of PM10, PM2.5, NO2, SO2, TVOC and CO at exposed schools were significantly higher (p<0.005). compared to those in comparative schools. All pollutants were significantly associated (p<0.001) with respiratory symptom phlegm and MN frequency. Additionally, the MN frequency in the exposed group was significantly higher (p<0.001) than in the comparative group. All in all, this study demonstrated that air pollutants, especially NO2 and CO, have significantly influenced the MN frequency among children in primary schools. This study suggested that exposure to TRAPs among Malaysian school children has increased the risk for respiratory complications with the formation of MN.

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Section: Accepted Manuscriptsupporting

confidence: 89%

Genotoxic Effects of Exposure to Urban Traffic Related Air Pollutants on Children in Klang Valley, Malaysia

Hisamuddin

Jalaludin

Yusof

et al. 2020

Aerosol Air Qual. Res.

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“…In the near future, the primary task is to improve the indoor air quality and protect people from suffering caused by poor quality air. In this article, we investigated the influence of different indoor PM 2.5 control strategies -airtightness improvement, indoor positive pressure control with a fresh air system and an air purifier, on indoor particle concentrations within a residential 4. Each of these control strategies alone cannot control the indoor PM 2.5 concentration below the healthy value.…”

Section: Discussionmentioning

confidence: 99%

“…Loftus et al 3 provided evidence that PM 2.5 contributes to elevated asthma morbidity in rural US communities. Choo et al 4 showed through statistical analysis that exposures to poor indoor air quality (IAQ) might increase the risk of developing respiratory symptoms among preschoolers in Malaysia. Guo et al 5 explored the association between PM 2.5 and the hospital emergency room visits in Beijing, China for cardiovascular diseases.…”

Section: Introductionmentioning

confidence: 99%

Retrofitting existing buildings to control indoor PM_2.5 concentration on smog days: Initial experience of residential buildings in China

Chu

Yang

et al. 2017

Building Services Engineering Research and Technology

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Severe smog days in many parts of developing countries, such as China and India, have drawn worldwide attention. This study aims at integrating various building retrofitting methods of existing buildings to control indoor particulate matter 2.5 concentrations. Methods are such as airtightness improvement, room pressure control, recycling air filtration and combinations of the above. The study verifies the effectiveness of each control method to reduce the indoor particulate matter 2.5 concentration below 25 mg/m 3 under certain outdoor conditions in building. Measurements and modelling are conducted for different outdoor particle concentration scenarios under different control strategies at an apartment in Shanghai, China. Overall, the retrofitting methods depend on outdoor smog circumstances and building structures. Therefore, it would be wise to choose appropriate control method depending on outdoor particulate matter 2.5 concentrations. This is the first time that various existing residential building retrofitting strategies are integrated jointly and the combination of different control methods are tested to ensure indoor air quality under different outdoor conditions. To validate the generality of these control strategies, a simulation model is developed and calibrated against experimental data under different scenarios. The variation of the indoor particulate matter 2.5 concentration in an extremely bad day is simulated and the influencing factors including infiltration air change rate, air volume and filter efficiency are all analyzed according to the model. The results and conclusions of this study can be used in many parts of the worlds, when building occupants have to choose proper equipment or retrofitting methods to control their indoor air quality. Practical application: The building retrofitting methods introduced in this article could be used in any residential building to control indoor particulate matter 2.5 concentrations continuously below 25 mg/m 3 under different outdoor conditions.

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“…This study proves that the increase in air pollution has adverse effects, especially on the development of respiratory function in childhood. Statistically, it was found that there was a significant relationship between exposure to high PM2.5 indoors with an increased risk of respiratory distress in children [4].…”

Section: Introductionmentioning

confidence: 97%

Particulate Matter 2.5 with Impaired Lung Function on Children: A Systematic Review

Basra¹

2020

Proceedings of the Third Andalas International Public Health Conference, AIPHC 2019, 10-11th October 2019, Padang, West Sumater

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Particulate Matter 2.5 (PM2.5) is generated from the combustion process, including exhaust fumes from motor vehicles, industrial activity, and forest fires. This review aims to find out PM2.5 as one of the risk factors of impaired lung function on children through a critical review of the article journals. A systematic review strategy was conducted by searching for articles related to PM2.5 with impaired lung function on children that already published in accredited journals from 2012-2017. The literature search was conducted in April 2017 through the online database, Pubmed, ProQuest, and Science Direct database. Seven article journals selected based on the inclusion criteria and the exclusion criteria that conducted with the critical review process. This systematic review showed the significant result that PM2.5 is one of the risk factors for impaired lung function on children. The higher the average concentration of PM2,5, the more decrease of lung function on children. Children, as one of the susceptible groups of PM2.5, need more protection and preventive actions, especially with forest fires that happened in Indonesia.

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Preschools’ Indoor Air Quality and Respiratory Health Symptoms among Preschoolers in Selangor

Cited by 20 publications

References 4 publications

Genotoxic Effects of Exposure to Urban Traffic Related Air Pollutants on Children in Klang Valley, Malaysia

Genotoxic Effects of Exposure to Urban Traffic Related Air Pollutants on Children in Klang Valley, Malaysia

Retrofitting existing buildings to control indoor PM_2.5 concentration on smog days: Initial experience of residential buildings in China

Particulate Matter 2.5 with Impaired Lung Function on Children: A Systematic Review

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Preschools’ Indoor Air Quality and Respiratory Health Symptoms among Preschoolers in Selangor

Cited by 20 publications

References 4 publications

Genotoxic Effects of Exposure to Urban Traffic Related Air Pollutants on Children in Klang Valley, Malaysia

Genotoxic Effects of Exposure to Urban Traffic Related Air Pollutants on Children in Klang Valley, Malaysia

Retrofitting existing buildings to control indoor PM2.5 concentration on smog days: Initial experience of residential buildings in China

Particulate Matter 2.5 with Impaired Lung Function on Children: A Systematic Review

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Product

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Retrofitting existing buildings to control indoor PM_2.5 concentration on smog days: Initial experience of residential buildings in China