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Indoor air quality

Luisa Lucattini, Giulia Poma, Adrian Covaci, Jacob de Boer, Marja H Lamoree, Pim E G Leonards
As many people spend a large part of their life indoors, the quality of the indoor environment is important. Data on contaminants such as flame retardants, pesticides and plasticizers are available for indoor air and dust but are scarce for consumer products such as computers, televisions, furniture, carpets, etc. This review presents information on semi-volatile organic compounds (SVOCs) in consumer products in an attempt to link the information available for chemicals in indoor air and dust with their indoor sources...
February 27, 2018: Chemosphere
Gabrielle Wong-Parodi, M Beatrice Dias, Michael Taylor
BACKGROUND: Air quality affects us all and is a rapidly growing concern in the 21st century. We spend the majority of our lives indoors and can be exposed to a number of pollutants smaller than 2.5 microns (particulate matter, PM2.5 ) resulting in detrimental health effects. Indoor air quality sensors have the potential to provide people with the information they need to understand their risk and take steps to reduce their exposure. One such sensor is the Speck sensor developed at the Community Robotics, Education and Technology Empowerment Lab at Carnegie Mellon University...
March 8, 2018: JMIR MHealth and UHealth
Lorenzo Cecchi, Gennaro D'Amato, Isabella Annesi-Maesano
Allergies are complex diseases that result from interactions between multiple genetic and environmental factors. However, the increase in allergies observed in the past decades is explained exclusively by environmental changes occurring in the same period. Presently, the exposome, the totality of specific and nonspecific external environmental exposures (external exposome) to which a subject is exposed from preconception onward and their consequences at the organ and cell levels (internal exposome), is being considered to explain the inception, development, and exacerbations of allergic diseases...
March 2018: Journal of Allergy and Clinical Immunology
Tiffany Schroder, Sharyn Gaskin, Kirstin Ross, Harriet Whiley
Fungal contamination of indoor air is an issue of increasing public health concern. Essential oils have been demonstrated to have antifungal capabilities, but there are limited studies investigating the efficacy of essential oils against fungi relevant to air quality. This study provides a preliminary screening of the antifungal properties of clove, lavender and eucalyptus essential oils against a range of fungal species isolated from environmental air samples. The ability of the essential oils to inhibit fungal growth was examined using the disk diffusion assay on malt extract agar and was compared with vinegar, bleach and limonene, with phenol as a positive control...
March 8, 2018: International Journal of Occupational and Environmental Health
Chang Yu, Qiao-Feng Wu, Yong Tang, Shu-Guang Yu
Moxibustion is an effective therapy for treatment of a lot of clinical problems, but the ignited moxa-induced smoke containing harmful substances may bring about indoor air pollution to affect both patients' and medical workers' health. However, there is no standards about controlling indoor air quality (IAQ) for moxibustion rooms in China. In the present study, the authors reviewed newly-published articles about some substances released from moxa smoke as inhalable particles (PM 10 and PM 2.5), formaldehyde, benzene, methylbenzene, xylene, bene[α]pyrene, total volatile organic compounds, CO, CO2 , NO, SO2 , NH3 , O3 , etc...
February 25, 2018: Zhen Ci Yan Jiu, Acupuncture Research
Se Ji Jung, Jodhbir Mehta, Louis Tong
The twenty-first century is fraught with dangers like climate change and pollution, which impacts human health and mortality. As levels of pollution increase, respiratory illnesses and cardiovascular ailments become more prevalent. Less understood are the eye-related complaints, which are commonly associated with increasing pollution. Affected people may complain of irritation, redness, foreign body sensation, tearing, and blurring of vision. Sources of pollution are varied, ranging from gases (such as ozone and NO2 ) and particulate matter produced from traffic, to some other hazards associated with indoor environments...
March 3, 2018: Ocular Surface
Fan Wang, Zheng Fangfang, Xiangmeng Guo, Wanguang Chen, Weiyun Yao, Haifang Liu, Chengcai Lyu, Yaowen Zhang, Chaojie Fan
In this study, we investigated the effect of inhaled mixtures of volatile organic compounds (VOCs) and carbon monoxide (CO) on neuroethology. Fifty 6-week-old male Kunming mice were exposed in five similar static chambers; zero (control) and four different doses of VOC and CO mixtures (G1-G4) for 10 consecutive days and 2 h/day. The compounds and concentrations were as follows: formaldehyde, benzene, toluene, xylene, and CO as 0.10 + 0.11 + 0.20 + 0.20 + 10.00 mg/m3 , 0.20 + 0.22 + 0.40 + 0.40 + 20.00 mg/m3 , 1...
January 1, 2018: Toxicology and Industrial Health
W M Champion, P H Charley, B Klein, K Stewart, P A Solomon, L D Montoya
No abstract text is available yet for this article.
February 27, 2018: Science of the Total Environment
Daniel H De La Iglesia, Juan F De Paz, Gabriel Villarrubia González, Alberto L Barriuso, Javier Bajo
Context-aware monitoring systems designed for e-Health solutions and ambient assisted living (AAL) play an important role in today's personalized health-care services. The majority of these systems are intended for the monitoring of patients' vital signs by means of bio-sensors. At present, there are very few systems that monitor environmental conditions and air quality in the homes of users. A home's environmental conditions can have a significant influence on the state of the health of its residents. Monitoring the environment is the key to preventing possible diseases caused by conditions that do not favor health...
March 2, 2018: Sensors
Brian Pavilonis, Cora Roelofs, Carly Blair
Nail salons are an important business and employment sector for recent immigrants offering popular services to a diverse range of customers across the United States. However, due to the nature of nail products and services, salon air can be burdened with a mix of low levels of hazardous airborne contaminants. Surveys of nail technicians have commonly found increased work-related symptoms, such as headaches and respiratory irritation that are consistent with indoor air quality problems. In an effort to improve indoor air quality in nail salons, the state of New York recently promulgated regulations to require increased outdoor air and "source capture" of contaminants...
March 1, 2018: Journal of Occupational and Environmental Hygiene
Shih-Tseng Lee, Ching-Chieh Liang, Tsung-Yi Chien, Feng-Jen Wu, Kuang-Chung Fan, Gwo-Hwa Wan
The interrelationships between ventilation rate, indoor air quality, and energy consumption in operation rooms at rest are yet to be understood. We investigate the effect of ventilation rate on indoor air quality indices and energy consumption in ORs at rest. The study investigates the air temperature, relative humidity, concentrations of carbon dioxide, particulate matter (PM), and airborne bacteria at different ventilation rates in operation rooms at rest of a medical center. The energy consumption and cost analysis of the heating, ventilating, and air conditioning (HVAC) system in the operation rooms at rest were also evaluated for all ventilation rates...
February 27, 2018: Environmental Monitoring and Assessment
Pierina Ielpo, Maria Rosaria Taurino, Riccardo Buccolieri, Claudia Marcella Placentino, Francesco Gallone, Valeria Ancona, Silvana Di Sabatino
Indoor air pollution assessment in work environments remains challenging due to a combination of logistic reasons and availability of costly instrumentation for data acquisition and post-processing. Existing literature focuses on energy production environments, hospitals, and less so on food production spaces. Studies on indoor air quality in bakeries are scarce or even absent. Motivated by this, the present study investigates indoor air quality in a bakery located in Bari province in South Italy, using a combination of approaches including analytical chemistry analyses and computational fluid dynamics to reconstruct the air ventilation in response to air temperature gradients within the working environment...
February 27, 2018: Environmental Science and Pollution Research International
Mawutorli Nyarku, Mandana Mazaheri, Rohan Jayaratne, Matthew Dunbabin, Md Mahmudur Rahman, Erik Uhde, Lidia Morawska
Mobile phones have a large spectrum of applications, aiding in risk prevention and improving health and wellbeing of their owners. So far, however, they have not been used for direct assessment of personal exposure to air pollution. In this study, we comprehensively evaluated the first, and the only available, mobile phone-BROAD Life-equipped with air pollution sensors (PM2.5 and VOC), to answer the question whether this technology is a viable option in the quest of reducing the burden of disease to air pollution...
2018: PloS One
Jillian R Palumbo, Shao Lin, Ziqiang Lin, Iulia A Neamtiu, Wangjian Zhang, Eva Csobod, Eugen S Gurzau
School environment may have an impact on children's health, but few studies have focused on indoor comfort factors such as temperature, humidity, and noise in relation with potential effects on children's health. Our cross-sectional study used data from the European Schools Indoor Pollution and Health Observatory Network in Europe (SINPHONIE) project to assess children's allergy, asthma-like symptoms, and flu-like symptoms in relation with classroom comfort and environmental factors. The study used self-reported data from three questionnaires to identify classroom conditions and student health outcomes for 280 students...
February 22, 2018: Environmental Science and Pollution Research International
S Torresin, G Pernigotto, F Cappelletti, A Gasparella
The present paper reports the outcomes of a literature survey aimed at exploring how different environmental factors - i.e. acoustic, thermal, visual and air quality stimuli - interact in affecting building occupants' perception and performance. Recent laboratory studies have been collected and their methodological approaches reviewed in terms of experimental design, adopted exposures conditions, perception and performance assessment methods. Results have been summarized and compared to identify interaction patterns between environmental factors and possible practical implications for improving the design of both experimental studies and the built environment...
February 22, 2018: Indoor Air
Alessia Demichelis, Céline Pascale, Maricarmen Lecuna, Bernhard Niederhauser, Guido Sassi, Maria Paola Sassi
Volatile organic compounds (VOCs) in gas mixtures at trace level (nmol/mol) are routinely measured by chemical and biochemical laboratories as climate indicators, indoor air quality pollutants from building materials emissions, contaminants in food and beverages, and biomarkers in body fluids (blood, urine, breath) of occupational exposure or human diseases. Current analytical instruments used for measurements are gas chromatographs equipped with various injector and detector configurations. The assurance of measurement quality is done by using a huge amount of certified liquid VOC standard solutions (or gaseous VOC standard cylinders) with multiple dilutions to reach the required trace level...
February 22, 2018: Analytical and Bioanalytical Chemistry
Young-Moo Jo, Tae-Hyung Kim, Chul-Soon Lee, Kyeorei Lim, Chan Woong Na, Faissal Abdel-Hady, Abdulaziz A Wazzan, Jong-Heun Lee
Nearly monodisperse hollow hierarchical Co3O4 nanocages of four different sizes (~0.3, 1.0, 2.0, and 4.0 m) consisting of nanosheets were prepared by controlled precipitation of ZIF-67 (Zeolitic imidazolate framework-67) rhombic dodecahedra, followed by solvothermal synthesis of Co3O4 nanocages using ZIF-67 self-sacrificial templates, and subsequent heat treatment for developing high-performance methylbenzene sensors. The sensor based on hollow hierarchical Co3O4 nanocages with the size of ~1.0 m not only exhibited ultrahigh responses (resistance ratios) to 5 ppm p-xylene (78...
February 21, 2018: ACS Applied Materials & Interfaces
Pascale Salameh, Rita Farah, Souheil Hallit, Rouba Karen Zeidan, Mirna N Chahine, Roland Asmar, Hassan Hosseini
Stroke is a disease related to high mortality and morbidity, particularly in developing countries. Some studies have linked self-reported indoor and outdoor pollution to stroke and mini-stroke, while some others showed no association. Our objective was to assess this association in Lebanon, a Middle Eastern developing country. A national cross-sectional study was conducted all over Lebanon. In addition to self-reported items of pollution exposure, we assessed potential predictors of stroke and mini-stroke, including sociodemographic characteristics, self-reported health information, and biological measurements...
February 20, 2018: Environmental Monitoring and Assessment
Sheng Zhang, Ruopeng An
OBJECTIVES: We examined the impact of ambient air pollution on television use among residents in Shanghai, China. METHODS: Device-measured daily average duration of television use from January 2014 to December 2016 was obtained from a random sample of 300 households, and was matched to air pollution and weather data. We used an autoregressive moving-average model to estimate the association between air quality index (AQI) and television use. RESULTS: There was a negative non-linear relationship between air pollution level and television use...
March 1, 2018: American Journal of Health Behavior
Hannaneh Hojaiji, Haik Kalantarian, Alex A T Bui, Christine E King, Majid Sarrafzadeh
This paper introduces the design, calibration, and validation of a low-cost portable sensor for the real-time measurement of dust particles within the environment. The proposed design consists of low hardware cost and calibration based on temperature and humidity sensing to achieve accurate processing of airborne dust density. Using commercial particulate matter sensors, a highly accurate air quality monitoring sensor was designed and calibrated using real world variations in humidity and temperature for indoor and outdoor applications...
March 2017: 2017 IEEE Sens Appl Symp (SAS) (2017)
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