BACKGROUND Formaldehyde (FA) and other volatile organic compounds (VOCs) are considered among the main causes of atopic aggravation. Their main sources include wallpapers, paints, adhesives, and flooring materials. OBJECTIVE To assess the effects of environmentally friendly wallpaper and flooring material on indoor air quality and atopic dermatitis severity. METHODS Thirty patients with ato...

This study examined the concentrations of carbon monoxide, carbon dioxide, TVOC, TSP, PM(10), PM(2.5), PM(1), benzene, toluene and xylene in passenger cars of the Beijing Ground Railway Transit System (Line No. 13). This system connects the northern suburb and downtown, and is equipped with air-conditioned passenger cars. In-train air quality monitoring was performed in both summer (July and Au...

A major problem for composting plants is odour emission. Slow decomposition during prolonged low-pH conditions is a frequent process problem in food waste composting. The aim was to investigate correlations between low pH, odour and microbial composition during food waste composting. Samples from laboratory composting experiments and two large scale composting plants were analysed for odour by ...

Stricter energy efficiency requirements of buildings have raised concerns about their effects on indoor air quality (IAQ). We studied measured and perceived IAQ in three low-energy wooden test using ventilation levels (0.5, 1.0, 2.0 (dm3/s)/m2). measurements included VOC (volatile organic compounds) sampling continuous several indicators. Perceived (PAQ) was investigated with a sensory panel un...

Indoor air quality (IAQ) in educational buildings is a key element of the students’ well-being and academic performance. Window-opening behavior infiltration, generally used as sole ventilation sources existing buildings, often lead to unhealthy levels indoor pollutants energy waste. This paper evaluates conditions natural classrooms order study how climate affect For that purpose, impact infil...

Abstract. The formation of ground-level ozone (O3) is dependent on both atmospheric chemical processes and meteorological factors. In this study, a random forest (RF) model coupled with the reactivity volatile organic compound (VOC) species was used to investigate O3 sensitivity in Beijing, China, from 2014 2016, evaluate relative importance (RI) factors formation. results showed that predictio...

Night-time ventilation has been used in non-residential buildings to enhance indoor air quality before occupied periods. However, many hypotheses exist on how this should be used. A typical choice shut down the after occupancy and restart again 2 hours occupancy. Another option ventilate continuously. In study, shut-down, continuous, intermittent strategies were compared by evaluating quality. ...

Recent statistics indicate that as indoor pollutants' effects on the human body become a severe issue in Dubai, need for systematic IAQ (indoor air quality) management is increasing. This paper aims to identify pollution status according characteristics of nursery rooms and playrooms suggest ventilation methods. As methodology, temperature humidity pollutants (Carbon Dioxide (CO2), PM10, Formal...

Several studies on indoor air quality (IAQ) and sick building syndromes have been completed over the last decade, especially in cold countries. Efforts to make homes airtight improve energy efficiency created buildings with low ventilation rates, resulting build-up of pollutants harmful levels that would be otherwise unacceptable outdoors. This paper analyzed infiltration temperatures, variatio...

Indoor environmental quality has a profound effect on human health and productivity. In this respect, study evaluates indoor air in terms of its various parameters sustainably built homes three different locations. A supplementary to examine the formaldehyde emission levels from furniture with finishes was also undertaken. questionnaire-based survey then conducted evaluate general public percep...