scholarly journals Results of the California Healthy Homes Indoor Air Quality Study of 2011-2013: impact of natural gas appliances on air pollutant concentrations

Indoor Air ◽  
2015 ◽  
Vol 26 (2) ◽  
pp. 231-245 ◽  
Author(s):  
N. A. Mullen ◽  
J. Li ◽  
M. L. Russell ◽  
M. Spears ◽  
B. D. Less ◽  
...  
Keyword(s):  
Air Quality ◽  
Natural Gas ◽  
Indoor Air Quality ◽  
Indoor Air ◽  
Air Pollutant ◽  
Healthy Homes ◽  
Pollutant Concentrations ◽  
Quality Study ◽  
Air Pollutant Concentrations

scholarly journals First steps in the development of a possible measurement method to estimate the radon concentration as an indicator of the indoor air quality

2014 ◽  
Vol 29 (suppl.) ◽  
pp. 52-58
Author(s):  
Franz Roessler ◽  
Jai Azzam ◽  
Volker Grimm ◽  
Hans Hingmann ◽  
Tina Orovwighose ◽  
...  
Keyword(s):  
Exchange Rate ◽  
Air Quality ◽  
Indoor Air Quality ◽  
Indoor Air ◽  
Primary Energy ◽  
Air Pollutant ◽  
Daily Routine ◽  
Air Exchange Rate ◽  
Pollutant Concentrations ◽  
Air Exchange

The energy conservation regulation provides upper limits for the annual primary energy requirements for new buildings and old building renovation. The actions required could accompany a reduction of the air exchange rate and cause a degradation of the indoor air quality. In addition to climate and building specific aspects, the air exchange rate is essentially affected by the residents. Present methods for the estimation of the indoor air quality can only be effected under test conditions, whereby the influence of the residents cannot be considered and so an estimation under daily routine cannot be ensured. In the context of this contribution first steps of a method are presented, that allows an estimation of the progression of the air exchange rate under favourable conditions by using radon as an indicator. Therefore mathematical connections are established that could be affirmed practically in an experimental set-up. So this method could provide a tool that allows the estimation of the progression of the air exchange rate and in a later step the estimation of a correlating progression of air pollutant concentrations without limitations of using the dwelling.

Variation of Indoor Air Quality among Urban Public Venues in Kaohsiung City, Taiwan

2013 ◽  
Vol 838-841 ◽  
pp. 1928-1933
Author(s):  
Mei Fang Lu ◽  
Jim Jui Min Lin
Keyword(s):  
Air Quality ◽  
Indoor Air Quality ◽  
Indoor Air ◽  
Urban Areas ◽  
Air Pollutant ◽  
High Concentration ◽  
Direct Reading ◽  
Pollutant Concentrations ◽  
High Concentrations

Modern people spent nearly 90% of their time indoor, and therefore, indoor air quality can directly affect our health. Recently, air quality has been much more emphasized than ever. Since 1970s, many studies have shown that the indoor air quality (IAQ) at urban areas can be worse than the outdoor air quality. To investigate the current condition of urban indoor air quality as well as differences between various types of public venues, this study used either a direct-reading instrument or the method proposed by the Taiwan Environmental Administration (TWEPA) for monitoring indoor air quality. The acquired data were used for variation analysis of indoor air quality of different public venues. Fifteen public venues were selected in this study for monitoring their indoor air quality, and among these 15 public venues, four of them are Category I venues, while the remaining eleven are Category II venues. The measurement was conducted twice at each of the public venue, and the monitored pollutants are CO2, CO, HCHO, TVOC, O3, PM10, PM2.5, bacteria, fungi, humidity, and temperature. The results suggested that there were nine public venues in the first sampling and seven public venues in the second sampling with indoor air pollutant concentrations exceeding the standards. Furthermore, the concentrations of CO2, CO, and O3, from the two measurements exceeded the indoor air quality standards. Therefore, CO2, CO, and O3can be considered as the main contributors to the poor indoor air quality of public venues. The high concentrations of CO2and O3indoor are related to population density and the use of O3generating machines, printers, or photocopiers. As for CO, the high concentration is because of the spread of exhaust gases from vehicles or factories may penetrate from outside to the indoor.

scholarly journals La surveillance de la qualité de l'air dans les Hauts-de-France

2021 ◽  
pp. 045
Author(s):  
Jimmy Leyes ◽  
Laure Roussel
Keyword(s):  
Air Quality ◽  
Air Pollutant ◽  
Quality Monitoring ◽  
Air Quality Monitoring ◽  
Non Profit ◽  
The Public ◽  
Pollutant Concentrations ◽  
Ambient Concentrations ◽  
Air Pollutant Concentrations ◽  
Qualité De L’Air

La surveillance réglementaire de la qualité de l'air en France est confiée aux associations régionales agréées de surveillance de la qualité de l'air (Aasqa) telles qu'Atmo Hauts-de-France. Elles s'appuient sur une palette d'outils et leur expertise pour mesurer les polluants dans l'air de leur territoire, alerter les populations en cas d'épisode de pollution, répondre aux exigences réglementaires de surveillance définies au niveau européen, tout en prenant en compte les spécificités régionales. Cet article présente les différents outils utilisés par les Aasqa, et plus particulièrement Atmo Hauts-de-France, pour surveiller et estimer la qualité de l'air. L'association régionale opère ainsi un ensemble de stations de mesures fixes et mobiles pour suivre en continu les concentrations de polluants réglementés ou non sur son territoire, et dispose d'outils de modélisation pour évaluer et prévoir la qualité de l'air en tous points de la région. Cet article présente également certains des paramètres météorologiques qui influencent la qualité de l'air de la région Hauts-de-France, particulièrement concernée par les épisodes de pollution aux particules. Regulatory air quality monitoring in France is performed by government-approved non-profit organisations called AASQAs, one of which is Atmo Hauts-de-France. These organisations rely on decades of accumulated air quality expertise and use several techniques to measure air pollutant concentrations, inform the public when pollutant levels are unhealthy, and comply with E.U. air quality monitoring regulations. This paper gives an overview of the tools used by AASQAs, and more particularly by Atmo Hauts-de-France, to monitor and forecast air quality. The year-round continuous monitoring of air pollutant levels at fixed sites is supplemented by short-term measurements made with fully-equipped vehicles or trailers and by modelling tools that forecast air quality and estimate pollutant levels where there are no measurements. AASQAs study pollutants which ambient concentrations are regulated by European air quality standards as well as other pollutants which are not regulated in this way. This work also discusses some of the meteorological factors, that affect air quality in the region Hauts-de-France, which is heavily impacted by particulate matter pollution.

AN INDOOR AIR QUALITY STUDY OF AN ALLIGATOR (ALLIGATOR MISSISSIPPIENSIS) HOLDING FACILITY

2006 ◽  
Vol 37 (2) ◽  
pp. 108-115
Author(s):  
S. C. Wilson ◽  
H. W. Holder ◽  
J. M. Martin ◽  
T. L. Brasel ◽  
L. A. Andriychuk ◽  
...  
Keyword(s):  
Air Quality ◽  
Indoor Air Quality ◽  
Indoor Air ◽  
Alligator Mississippiensis ◽  
Quality Study

Case Study: Multipollutant Indoor Air Quality Study of 300 Homes in Kingston/Harriman, Tennessee

2008 ◽  
pp. 129-129-19 ◽  
Author(s):  
AR Hawthorne ◽  
CS Dudney ◽  
RL Tyndall ◽  
T Vo-Dinh ◽  
MA Cohen ◽  
...  
Keyword(s):  
Air Quality ◽  
Indoor Air Quality ◽  
Indoor Air ◽  
Quality Study

scholarly journals Indoor air quality and health in schools

2014 ◽  
Vol 40 (3) ◽  
pp. 259-268 ◽  
Author(s):  
Ana Maria da Conceição Ferreira ◽  
Massano Cardoso
Keyword(s):  
Air Quality ◽  
Indoor Air Quality ◽  
Indoor Air ◽  
Respiratory Diseases ◽  
Reference Value ◽  
Signs And Symptoms ◽  
Co2 Concentration ◽  
Air Pollutant ◽  
Carbon Dioxide Co2 ◽  
The City

Objective: To determine whether indoor air quality in schools is associated with the prevalence of allergic and respiratory diseases in children. Methods: We evaluated 1,019 students at 51 elementary schools in the city of Coimbra, Portugal. We applied a questionnaire that included questions regarding the demographic, social, and behavioral characteristics of students, as well as the presence of smoking in the family. We also evaluated the indoor air quality in the schools. Results: In the indoor air of the schools evaluated, we identified mean concentrations of carbon dioxide (CO2) above the maximum reference value, especially during the fall and winter. The CO2 concentration was sometimes as high as 1,942 ppm, implying a considerable health risk for the children. The most prevalent symptoms and respiratory diseases identified in the children were sneezing, rales, wheezing, rhinitis, and asthma. Other signs and symptoms, such as poor concentration, cough, headache, and irritation of mucous membranes, were identified. Lack of concentration was associated with CO2 concentrations above the maximum recommended level in indoor air (p = 0.002). There were no other significant associations. Conclusions: Most of the schools evaluated presented with reasonable air quality and thermal comfort. However, the concentrations of various pollutants, especially CO2, suggest the need for corrective interventions, such as reducing air pollutant sources and improving ventilation. There was a statistically significant association between lack of concentration in the children and exposure to high levels of CO2. The overall low level of pollution in the city of Coimbra might explain the lack of other significant associations.

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