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indoor air pollution

Meng Qi, Xi Zhu, Wei Du, Yilin Chen, Yuanchen Chen, Tianbo Huang, Xuelian Pan, Qirui Zhong, Xu Sun, Eddy Y Zeng, Baoshan Xing, Shu Tao
Because people spend most of their time indoors, the characterization of indoor air quality is important for exposure assessment. Unfortunately, indoor air data are scarce, leading to a major data gap in risk assessment. In this study, PM2.5 concentrations in both indoor and outdoor air were simultaneously measured using on-line particulate counters in 13 households in Haidian, Beijing for both heating and non-heating seasons. A bimodal distribution of PM2.5 concentrations suggests rapid transitions between polluted and non-polluted situations...
October 18, 2016: Environmental Pollution
Sascha Nehr, Elisabeth Hösen, Shin-Ichi Tanabe
Despite the fact that the special characteristics of indoor air pollution make closed environments quite different from outdoor environments, the conceptual ideas for assessing air quality indoors and outdoors are similar. Therefore, the elaboration of International Standards for air quality characterization in view of controlling indoor air quality should resort to this common basis. In this short review we describe the possibilities of standardization of tools dedicated to indoor air quality characterization with a focus on the tools permitting to study the indoor air chemistry...
October 11, 2016: Environment International
Hye-Kyung Park, Kai-Chung Cheng, Afua O Tetteh, Lynn M Hildemann, Kari C Nadeau
OBJECTIVE: Epidemiologic studies indicate that indoor air pollution is correlated with morbidity caused by allergic diseases. We evaluated the effectiveness of reducing the levels of indoor fine particulate matter < 2.5 micrometer diameter (PM2.5) in Fresno, California using air purifiers on health outcomes in children with asthma and/or allergic rhinitis. METHODS: The active group (with air purifiers) and the control group consisted of eight houses each. Air purifiers were installed in the living rooms and bedrooms of the subjects in the active group during the entire 12-week study duration...
October 10, 2016: Journal of Asthma: Official Journal of the Association for the Care of Asthma
Eduardo Monteiro Martins, Priscila Falcão de Sá Borba, Neemias Espindola Dos Santos, Paula Thaise Bermudez Dos Reis, Renata Simões Silveira, Sergio Machado Corrêa
Indoor air quality is an increasing concern; it causes significant damage to health because it is recycled in confined environments for extended periods of time. Among the pollutants found in these environments, benzene, toluene, ethylbenzene, and xylenes (BTEX) are known for their potential toxic, mutagenic, and carcinogenic effects. This study monitored the BTEX concentrations in paint, carpentry, and varnish workplaces and evaluated the potential to cause adverse health effects on workers in these environments...
November 2016: Environmental Monitoring and Assessment
S E Bartington, I Bakolis, D Devakumar, O P Kurmi, J Gulliver, G Chaube, D S Manandhar, N M Saville, A Costello, D Osrin, A L Hansell, J G Ayres
Household Air Pollution (HAP) from biomass cooking fuels is a major cause of morbidity and mortality in low-income settings worldwide. In Nepal the use of open stoves with solid biomass fuels is the primary method of domestic cooking. To assess patterns of domestic air pollution we performed continuous measurement of carbon monoxide (CO) and particulate Matter (PM2.5) in 12 biomass fuel households in Janakpur, Nepal. We measured kitchen PM2.5 and CO concentrations at one-minute intervals for an approximately 48-h period using the TSI DustTrak II 8530/SidePak AM510 (TSI Inc, St...
October 1, 2016: Environmental Pollution
James David Smith, Christina Mitsakou, Nutthida Kitwiroon, Ben M Barratt, Heather A Walton, Jonathon G Taylor, Hugh Ross Anderson, Frank J Kelly, Sean D Beevers
Here we describe the development of the London Hybrid Exposure Model (LHEM), which calculates exposure of the Greater London population to outdoor air pollution sources, in-buildings, in-vehicles and outdoors, using survey data of when and where people spend their time. For comparison and to estimate exposure misclassification we compared Londoners LHEM exposure with exposure at the residential address, a commonly used exposure metric in epidemiological research. In 2011, the mean annual LHEM exposure to outdoor sources was estimated to be 37÷ lower for PM2...
October 6, 2016: Environmental Science & Technology
Maria Concetta D'Ovidio, Isabella Annesi-Maesano, Gennaro D'Amato, Lorenzo Cecchi
INTRODUCTION: Climate change, air pollution, temperature increase and other environmental variables are modifying air quality, contributing to the increase of prevalence of allergic respiratory diseases. Allergies are complex diseases characterized by multilevel interactions between individual susceptibility, response to immune modulation and environmental exposures to physical, chemical and biological agents. Occupational allergies introduce a further complexity to these relationships by adding occupational exposure to both the indoor and outdoor ones in the living environment...
July 2016: Annali Dell'Istituto Superiore di Sanità
Marta Oliveira, Klara Slezakova, Joana Madureira, Eduardo de Oliveira Fernandes, Cristina Delerue-Matos, Simone Morais, Maria do Carmo Pereira
Although polycyclic aromatic hydrocarbons (PAHs) are priority air pollutants that strongly affect human health, information concerning the indoor exposures is still limited. This study characterized PAH levels in primary schools and evaluated risk for the respective students (aged 8-10years) in comparison with school personnel. During January-April 2014, eighteen particulate-bound (PM2.5) PAHs (16 USEPA priority compounds, dibenzo[a,l]pyrene, benzo[j]fluoranthene) were collected (indoors and outdoors) at ten primary urban schools in Portugal...
September 29, 2016: Science of the Total Environment
Issam Odeh, Tareq Hussein
Knowledge of human activity patterns is needed in air pollution exposure and health risk assessment. However, human activity patterns have never been evaluated in the Eastern Mediterranean societies. Therefore, we investigated the activity pattern of 285 subjects (17-63 years) in Amman, Jordan during October to November, 2015. The subjects spent >80% of their time indoors during weekend days and >85% on workdays. They spent ~4.8% and ~5.7% in transportation during weekend days and workdays, respectively...
2016: International Journal of Environmental Research and Public Health
Hyoung-Il Kim, Seunghyun Weon, Homan Kang, Anna L Hagstrom, Oh Seok Kwon, Yoon-Sik Lee, Wonyong Choi, Jae-Hong Kim
This study demonstrates the first reported photocatalytic decomposition of an indoor air pollutant, acetaldehyde, using low-energy, sub-bandgap photons harnessed through sensitized triplet-triplet annihilation (TTA) upconversion (UC). To utilize low-intensity noncoherent indoor light and maximize photocatalytic activity, we designed a plasmon-enhanced sub-bandgap photocatalyst device consisting of two main components: (1) TTA-UC rubbery polymer films containing broad-band plasmonic particles (Ag-SiO2) to upconvert sub-bandgap photons, and (2) nanodiamond (ND)-loaded WO3 as a visible-light photocatalyst composite...
October 18, 2016: Environmental Science & Technology
Meredith C McCormack, Andrew J Belli, Darryn Waugh, Elizabeth C Matsui, Roger D Peng, D'Ann Williams, Laura Paulin, Anik Saha, Charles M Aloe, Gregory B Diette, Patrick N Breysse, Nadia N Hansel
RATIONALE: There is limited evidence of the effect of exposure to heat on COPD morbidity and the interactive effect between indoor heat and air pollution has not been established. OBJECTIVES: To determine the effect of indoor and outdoor heat exposure on COPD morbidity and to determine whether air pollution concentrations modify the effect of temperature. METHODS: Sixty-nine participants with COPD were enrolled in a longitudinal cohort study and data from the 601 participant days that occurred during the warm weather season were included in the analysis...
September 29, 2016: Annals of the American Thoracic Society
Zheng Li, Adwoa Commodore, Stella Hartinger, Michael Lewin, Andreas Sjödin, Erin Pittman, Debra Trinidad, Kendra Hubbard, Claudio F Lanata, Ana I Gil, Daniel Mäusezahl, Luke P Naeher
BACKGROUND: Household air pollution (HAP) from indoor biomass stoves contains harmful pollutants, such as polycyclic aromatic hydrocarbons (PAHs), and is a leading risk factor for global disease burden. We used biomonitoring to assess HAP exposure and association with self-reported symptoms in 334 non-smoking Peruvian women to evaluate the efficacy of a stove intervention program. METHODS: We conducted a cross-sectional study within the framework of a community randomized control trial...
September 24, 2016: Environment International
Nadeem Ali, Iqbal Mohammad Ibrahim Ismail, Mamdouh Khoder, Magdy Shamy, Mansour Alghamdi, Max Costa, Lulwa Naseer Ali, Wei Wang, Syed Ali Musstjab Akber Shah Eqani
This study reports levels and profiles of polycyclic aromatic hydrocarbons (PAHs) in dust samples collected from three different microenvironments (cars, air conditioner (AC) filters and household floor dust) of Jeddah, Saudi Arabia (KSA) and Kuwait. To the best of our knowledge, this is first study reporting PAHs in indoor microenvironments of KSA, which makes these findings important. Benzo(b)fluoranthene (BbF), benzo(a)pyrene (BaP), phenanthrene (Phe), and pyrene (Pyr) were found to be the major chemicals in dust samples from all selected microenvironments...
September 24, 2016: Science of the Total Environment
Sheetu Singh, Bharat Bhushan Sharma, Sundeep Salvi, Jugesh Chhatwal, Kailash Chandra Jain, Lata Kumar, Mohan Keshav Joshi, Suresh Babu Pandramajal, Shally Awasthi, Sheila Bhave, Sylvan Rego, Thevaruparambil Unny Sukumaran, Vasant A Khatav, Virendra Singh, Surendra Kumar Sharma, Mohammed Sabir
OBJECTIVE: We aim to describe the data collected from India during phase 3 of the International study of asthma and allergy in childhood (ISAAC) study. Prevalence, severity, and population characteristics associated with rhinitis, rhinoconjunctivitis, and eczema were assessed. METHODS: Children from two age groups (6-7 and 13-14 years) were included in the study as per the ISAAC protocol. The symptoms of allergy and associated features were assessed using a questionnaire...
September 24, 2016: Clinical Respiratory Journal
Shafquat Rozi, Zahid Ahmad Butt, Nida Zahid, Saba Wasim, Kashif Shafique
OBJECTIVES: The study aimed to identify the effects of maternal tobacco consumption during pregnancy and other factors on birth outcomes and obstetric complications in Karachi, Pakistan. DESIGN: A multicentre hospital-based case-control study. SETTING: Four leading maternity hospitals of Karachi. PARTICIPANTS: A random sample of 1275 women coming to the gynaecology and obstetric department of selected hospitals for delivery was interviewed within 48 hours of delivery from wards...
2016: BMJ Open
Elena Bucur, Andrei Florin Danet, Carol Blaziu Lehr, Elena Lehr, Mihai Nita-Lazar
Implications The paper presents a new way to assess the environmental impact on historical artefacts using binary logistic regression. The mathematical model developed on the environmental parameters analyzed by the binary logistic regression method could be useful in a decisional making process establishing the best measures for pollution reduction and preventive preservation of exhibits.
September 20, 2016: Journal of the Air & Waste Management Association
Joana Madureira, Inês Paciência, João Cavaleiro-Rufo, Eduardo de Oliveira Fernandes
Allergic diseases have been on the rise in many countries over the past few decades and indoor exposure may be a possible cause. An overall investigation of children's health status and residential indoor air pollutants known or suspected to affect respiratory health was conducted in the homes of primary schoolchildren during winter in Porto, Portugal. In a case-control study (30 case children with asthma and 38 controls) and over a 1-wk monitoring period, air sample collection was conducted in children's bedrooms for the analysis of 12 volatile organic compounds (VOC), aldehydes, particulate matter (PM)2...
2016: Journal of Toxicology and Environmental Health. Part A
Iny Jhun, Jonathan M Gaffin, Brent A Coull, Michelle F Huffaker, Carter R Petty, William J Sheehan, Sachin N Baxi, Peggy S Lai, Choong-Min Kang, Jack M Wolfson, Diane R Gold, Petros Koutrakis, Wanda Phipatanakul
BACKGROUND: Home-based interventions to improve indoor air quality have demonstrated benefits for asthma morbidity, yet little is known about the effect of environmental interventions in the school setting. OBJECTIVE: We piloted the feasibility and effectiveness of a classroom-based air cleaner intervention to reduce particulate pollutants in classrooms of children with asthma. METHODS: In this pilot randomized controlled trial, we assessed the effect of air cleaners on indoor air particulate pollutant concentrations in 18 classrooms (9 control, 9 intervention) in 3 urban elementary schools...
September 15, 2016: Journal of Allergy and Clinical Immunology in Practice
N Costarramone, C Cantau, V Desauziers, C Pécheyran, T Pigot, S Lacombe
At the European level (CEN/TC386), some efforts are currently devoted to new standards for comparing the efficiency of commercial photocatalytic material/devices in various application fields. Concerning prototype or commercial indoor photocatalytic air purifiers designed for volatile organic compounds (VOC) abatement, the methodology is based on a laboratory airtight chamber. The photocatalytic function is demonstrated by the mineralization of a mixture of five VOCs. Experimental data were obtained for four selected commercial devices and three commercial materials: drop of VOC concentration, but also identification of secondary species (with special attention to formaldehyde), mineralization rates, and Clean Air Delivery Rate (CADR)...
September 15, 2016: Environmental Science and Pollution Research International
Jian Hou, Yuqing Yang, Xiji Huang, Yuanchao Song, Huizhen Sun, Jianshu Wang, Fan Hou, Chuanyao Liu, Weihong Chen, Jing Yuan
Indoor air pollutants from environmental tobacco smoke and cooking fume can induce oxidative stress and inflammatory response, which generate oxidatively damaged DNA in human body. Among 2224 adults, levels of FENO and urinary 8-oxodG were measured using a nano coulomb nitric oxide analyzer and a high performance liquid chromatography system with electrochemical detector, respectively. Association between aging with higher FENO levels and urinary 8-oxodG levels were analyzed using multiple linear regression analysis...
September 14, 2016: Environmental Science and Pollution Research International
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