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Indoor air quality

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https://www.readbyqxmd.com/read/28545099/fine-particles-in-homes-of-predominantly-low-income-families-with-children-and-smokers-key-physical-and-behavioral-determinants-to-inform-indoor-air-quality-interventions
#1
Neil E Klepeis, John Bellettiere, Suzanne C Hughes, Benjamin Nguyen, Vincent Berardi, Sandy Liles, Saori Obayashi, C Richard Hofstetter, Elaine Blumberg, Melbourne F Hovell
Children are at risk for adverse health outcomes from occupant-controllable indoor airborne contaminants in their homes. Data are needed to design residential interventions for reducing low-income children's pollutant exposure. Using customized air quality monitors, we continuously measured fine particle counts (0.5 to 2.5 microns) over a week in living areas of predominantly low-income households in San Diego, California, with at least one child (under age 14) and at least one cigarette smoker. We performed retrospective interviews on home characteristics, and particle source and ventilation activities occurring during the week of monitoring...
2017: PloS One
https://www.readbyqxmd.com/read/28536962/trace-element-contents-in-fine-particulate-matter-pm2-5-in-urban-school-microenvironments-near-a-contaminated-beach-with-mine-tailings-cha%C3%A3-aral-chile
#2
Stephanie Mesías Monsalve, Leonardo Martínez, Karla Yohannessen Vásquez, Sergio Alvarado Orellana, José Klarián Vergara, Miguel Martín Mateo, Rogelio Costilla Salazar, Mauricio Fuentes Alburquenque, Dante D Cáceres Lillo
Air quality in schools is an important public health issue because children spend a considerable part of their daily life in classrooms. Particulate size and chemical composition has been associated with negative health effects. We studied levels of trace element concentrations in fine particulate matter (PM2.5) in indoor versus outdoor school settings from six schools in Chañaral, a coastal city with a beach severely polluted with mine tailings. Concentrations of trace elements were measured on two consecutive days during the summer and winter of 2012 and 2013 and determined using X-ray fluorescence...
May 23, 2017: Environmental Geochemistry and Health
https://www.readbyqxmd.com/read/28534713/the-influence-of-thermal-comfort-on-the-quality-of-life-of-nursing-home-residents
#3
Ana Mendes, Ana Luísa Papoila, Pedro Carreiro-Martins, Lívia Aguiar, Stefano Bonassi, Iolanda Caires, Teresa Palmeiro, Álvaro Silva Ribeiro, Paula Neves, Cristiana Pereira, Amália Botelho, Nuno Neuparth, João Paulo Teixeira
Thermal comfort (TC) parameters were measured in 130 rooms from nursing homes (NH), following ISO 7730:2005 in order to evaluate the influence of winter season TC indices on quality of life (QoL) in older individuals. Mean radiant temperature (mrT), predicted mean vote (PMV) and predicted percent of dissatisfied people (PPD) indices, and the respective measurement uncertainties were calculated using Monte Carlo Method. The WHOQOL-BREF questionnaire was conducted from September 2012 to April 2013, during the winter season TC sampling campaign...
May 23, 2017: Journal of Toxicology and Environmental Health. Part A
https://www.readbyqxmd.com/read/28520744/indoor-simulations-reveal-differences-among-plant-species-in-capturing-particulate-matter
#4
Jungang Chen, Xinxiao Yu, Huaxing Bi, Yanlin Fu
A number of studies have focused on the capacity of urban trees and shrubs to serve as efficient biological filters to mitigate air pollution. In this study, five different tree species were assessed for this function. Kerria japonica, Sophora japonica, Philadelphus pekinensis, Gleditsia sinensis, and Prunus persica 'Atropurpurea' were tested in a deposition chamber using (NH4)2SO4 particles. We quantified and compared the capability of all tested trees to remove particles by assessing deposition velocity, a measure of the ability to remove particles...
2017: PloS One
https://www.readbyqxmd.com/read/28512342/a-gas-sensor-array-for-the-simultaneous-detection-of-multiple-vocs
#5
Yumin Zhang, Jianhong Zhao, Tengfei Du, Zhongqi Zhu, Jin Zhang, Qingju Liu
Air quality around the globe is declining and public health is seriously threatened by indoor air pollution. Typically, indoor air pollutants are composed of a series of volatile organic compounds (VOCs) that are generally harmful to the human body, especially VOCs with low molecular weights (less than 100 Da). Moreover, in some situations, more than one type of VOC is present; thus, a device that can detect one or more VOCs simultaneously would be most beneficial. Here, we synthesized a sensor array with 4 units to detect 4 VOCs: acetone (unit 1), benzene (unit 2), methanol (unit 3) and formaldehyde (unit 4) simultaneously...
May 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28506010/re-evaluation-of-a-leed-platinum-building-occupant-experiences-of-health-and-comfort
#6
Julie Dorsey, Alan Hedge
BACKGROUND: There is a need to better understand the perceived experiences of workers in green buildings as the literature to this point has been mixed. OBJECTIVES: To re-evaluate occupant experiences within a LEED platinum building and investigate current experiences in general. METHODS: An online post occupancy evaluation (POE) survey of 62 occupants of LEED Platinum building on a US college campus is reported. The online survey addressed indoor environmental quality in relation to health, productivity and satisfaction...
May 6, 2017: Work: a Journal of Prevention, Assessment, and Rehabilitation
https://www.readbyqxmd.com/read/28493625/significant-oh-production-under-surface-cleaning-and-air-cleaning-conditions-impact-on-indoor-air-quality
#7
Nicola Carslaw, Louise Fletcher, Dwayne Heard, Trevor Ingham, Hannah Walker
We report measurements of hydroxyl (OH) and hydroperoxy (HO2 ) radicals made by laser-induced fluorescence spectroscopy in a computer classroom (i) in the absence of indoor activities (ii) during desk cleaning with a limonene-containing cleaner (iii) during operation of a commercially available 'air cleaning' device. In the unmanipulated environment, the one-minute averaged OH concentration remained close to or below the limit of detection (6.5 x 10(5) molecule cm(-3) ), whilst that of HO2 was 1.3 x 10(7) molecule cm(-3) ...
May 11, 2017: Indoor Air
https://www.readbyqxmd.com/read/28481324/chemical-characterization-of-the-indoor-air-quality-of-a-university-hospital-penetration-of-outdoor-air-pollutants
#8
Paul T J Scheepers, Luuk Van Wel, Gwendolyn Beckmann, Rob B M Anzion
For healthcare centers, local outdoor sources of air pollution represent a potential threat to indoor air quality (IAQ). The aim of this study was to study the impact of local outdoor sources of air pollution on the IAQ of a university hospital. IAQ was characterized at thirteen indoor and two outdoor locations and source samples were collected from a helicopter and an emergency power supply. Volatile organic compounds (VOC), acrolein, formaldehyde, nitrogen dioxide (NO₂), respirable particulate matter (PM-4...
May 8, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28475439/occupational-exposure-of-aldehydes-resulting-from-the-storage-of-wood-pellets
#9
Mohammad Arifur Rahman, Alan Rossner, Philip K Hopke
An exposure assessment was conducted to investigate the potential for harmful concentrations of airborne short chain aldehydes emitted from recently stored wood pellets. Wood pellets can emit a number of airborne aldehydes include acetaldehyde, formaldehyde, propionaldehyde, butyraldehyde, valeraldehyde, and hexanal. Exposure limits have been set for these compounds since they can result in significant irritation of the upper respiratory system at elevated concentrations. Formaldehyde is a recognized human carcinogen and acetaldehyde is an animal carcinogen...
June 2017: Journal of Occupational and Environmental Hygiene
https://www.readbyqxmd.com/read/28474814/perceived-indoor-air-quality-and-its-relationship-to-air-pollutants-in-french-dwellings
#10
Sarka Langer, Olivier Ramalho, Eline Le Ponner, Mickaël Derbez, Severine Kirchner, Corinne Mandin
Perception of indoor air quality (PIAQ) was evaluated in a nationwide survey of 567 French dwellings, and this survey was combined with measurements of gaseous and particulate matter (PM10 and PM2.5 ) indoor air pollutants and indoor climate parameters. The perception was assessed on a nine-grade scale by both the occupants of the dwellings and the inspectors who performed the measurements. The occupants perceived the air quality in their homes as more pleasant than the inspectors. The inspectors perceived the air quality as more unpleasant in dwellings in which the residents smoked indoors...
May 5, 2017: Indoor Air
https://www.readbyqxmd.com/read/28471398/design-and-development-of-a-nearable-wireless-system-to-control-indoor-air-quality-and-indoor-lighting-quality
#11
Francesco Salamone, Lorenzo Belussi, Ludovico Danza, Theodore Galanos, Matteo Ghellere, Italo Meroni
The article describes the results of the project "open source smart lamp" aimed at designing and developing a smart object able to manage and control the indoor environmental quality (IEQ) of the built environment. A first version of this smart object, built following a do-it-yourself (DIY) approach using a microcontroller, an integrated temperature and relative humidity sensor, and techniques of additive manufacturing, allows the adjustment of the indoor thermal comfort quality (ICQ), by interacting directly with the air conditioner...
May 4, 2017: Sensors
https://www.readbyqxmd.com/read/28451957/assessment-of-indoor-and-outdoor-particulate-air-pollution-at-an-urban-background-site-in-iran
#12
Mahmoud Mohammadyan, Mahboobeh Ghoochani, Itai Kloog, Sabah Ahmed Abdul-Wahab, Kaan Yetilmezsoy, Behzad Heibati, Krystal J Godri Pollitt
The relationship between indoor and outdoor particulate air pollution was investigated at an urban background site on the Payambar Azam Campus of Mazandaran University of Medical Sciences in Sari, Northern Iran. The concentration of particulate matter sized with a diameter less than 1 μm (PM1.0), 2.5 μm (PM2.5), and 10 μm (PM10) was evaluated at 5 outdoor and 12 indoor locations. Indoor sites included classrooms, corridors, and office sites in four university buildings. Outdoor PM concentrations were characterized at five locations around the university campus...
May 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28438993/air-quality-health-and-climate-implications-of-china-s-synthetic-natural-gas-development
#13
Yue Qin, Fabian Wagner, Noah Scovronick, Wei Peng, Junnan Yang, Tong Zhu, Kirk R Smith, Denise L Mauzerall
Facing severe air pollution and growing dependence on natural gas imports, the Chinese government plans to increase coal-based synthetic natural gas (SNG) production. Although displacement of coal with SNG benefits air quality, it increases CO2 emissions. Due to variations in air pollutant and CO2 emission factors and energy efficiencies across sectors, coal replacement with SNG results in varying degrees of air quality benefits and climate penalties. We estimate air quality, human health, and climate impacts of SNG substitution strategies in 2020...
May 9, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28437767/building-integrated-agriculture-a-first-assessment-of-aerobiological-air-quality-in-rooftop-greenhouses-i-rtgs
#14
Mireia Ercilla-Montserrat, Rebeca Izquierdo, Jordina Belmonte, Juan Ignacio Montero, Pere Muñoz, Concepción De Linares, Joan Rieradevall
Building-integrated rooftop greenhouse (i-RTG) agriculture has intensified in recent years, due to the growing interest in the development of new agricultural spaces and in the promotion of food self-sufficiency in urban areas. This paper provides a first assessment of the indoor dynamics of bioaerosols in an i-RTG, with the aim of evaluating biological air quality in a tomato greenhouse near Barcelona. It evaluates the greenhouse workers' exposure to airborne pollen and fungal spores in order to prevent allergy problems associated with occupational tasks...
April 21, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28432989/the-effect-of-natural-ventilation-strategy-on-indoor-air-quality-in-schools
#15
Luca Stabile, Marco Dell'Isola, Aldo Russi, Angelamaria Massimo, Giorgio Buonanno
In order to reduce children's exposure to pollutants in classrooms a proper ventilation strategy need to be adopted. Such strategy is even more important in naturally ventilated schools where the air exchange rate is only based on the manual airing of classrooms. The present work aimed to evaluate the effect of the manual airing strategy on indoor air quality in Italian classrooms. For this aim, schools located in the Central Italy were investigated. Indoor air quality was studied in terms of CO2, particle number and PM concentrations and compared to corresponding outdoor levels...
October 1, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28423205/the-impact-of-biogas-and-fuelwood-use-on-institutional-kitchen-air-quality-in-kampala-uganda
#16
Aleia Ingulli McCord, Sarah Adel Stefanos, Vianney Tumwesige, Dorothy Lsoto, Anna Hillstrom Meding, Angela Adong, James Jay Schauer, Rebecca Anne Larson
Experts have suggested that microscale biogas systems offer a source of renewable energy that improves indoor air quality, but such impacts have not been directly measured. This study documented cooking behaviors and measured 2.5 μm particulate matter (PM2.5 ), carbon monoxide (CO), and sulfur dioxide (SO2 ) concentrations within 14 institutional kitchens in Kampala, Uganda that prepare meals using biogas (n=5), a mixture of biogas and fuelwood (n=3), and fuelwood (n=6). Small institutions (10-30 people) with biogas kitchens had 99% lower concentrations of PM2...
April 19, 2017: Indoor Air
https://www.readbyqxmd.com/read/28420188/health-risk-assessment-of-indoor-air-quality-socioeconomic-and-house-characteristics-on-respiratory-health-among-women-and-children-of-tirupur-south-india
#17
Krassi Rumchev, Yun Zhao, Jeffery Spickett
Background: Indoor air pollution is still considered as one of the leading causes of morbidity and mortality worldwide and especially in developing countries, including India. This study aims to assess social, housing, and indoor environmental factors associated with respiratory health among mothers and children. Methods: The study was conducted in the city of Tirupur, South India. We quantitatively assessed the indoor exposure to fine particulate matter (PM2.5) and carbon monoxide in relation to respiratory health among women and children...
April 17, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28409088/city-scale-climate-change-policies-do-they-matter-for-wellbeing
#18
Rosemary Hiscock, Arja Asikainen, Jouni Tuomisto, Matti Jantunen, Erkki Pärjälä, Clive E Sabel
Climate change mitigation policies aim to reduce climate change through reducing greenhouse gas (GHG) emissions whereas adaption policies seek to enable humans to live in a world with increasingly variable and more extreme climatic conditions. It is increasingly realised that enacting such policies will have unintended implications for public health, but there has been less focus on their implications for wellbeing. Wellbeing can be defined as a positive mental state which is influenced by living conditions...
June 2017: Preventive Medicine Reports
https://www.readbyqxmd.com/read/28403894/antibiotic-resistant-airborne-bacteria-and-their-multidrug-resistance-pattern-at-university-teaching-referral-hospital-in-south-ethiopia
#19
Fithamlak Bisetegen Solomon, Fiseha Wada Wadilo, Amsalu Amache Arota, Yishak Leka Abraham
BACKGROUND: Hospitals provide a reservoir of microorganisms, many of which are multi-resistant to antibiotics. Emergence of multi-drug resistant strains in a hospital environment, particularly in developing countries is an increasing problem to infection treatment. This study aims at assessing antibiotic resistant airborne bacterial isolates. METHODS: A cross-sectional study was conducted at Wolaita Sodo university teaching and referral Hospital. Indoor air samples were collected by using passive air sampling method...
April 12, 2017: Annals of Clinical Microbiology and Antimicrobials
https://www.readbyqxmd.com/read/28398225/a-low-cost-environmental-monitoring-system-how-to-prevent-systematic-errors-in-the-design-phase-through-the-combined-use-of-additive-manufacturing-and-thermographic-techniques
#20
Francesco Salamone, Ludovico Danza, Italo Meroni, Maria Cristina Pollastro
nEMoS (nano Environmental Monitoring System) is a 3D-printed device built following the Do-It-Yourself (DIY) approach. It can be connected to the web and it can be used to assess indoor environmental quality (IEQ). It is built using some low-cost sensors connected to an Arduino microcontroller board. The device is assembled in a small-sized case and both thermohygrometric sensors used to measure the air temperature and relative humidity, and the globe thermometer used to measure the radiant temperature, can be subject to thermal effects due to overheating of some nearby components...
April 11, 2017: Sensors
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