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indoor air pollution

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https://www.readbyqxmd.com/read/28061882/indoor-and-outdoor-pm10-levels-at-schools-located-near-mine-dumps-in-gauteng-and-north-west-provinces-south-africa
#1
Vusumuzi Nkosi, Janine Wichmann, Kuku Voyi
BACKGROUND: Few studies in South Africa have investigated the exposure of asthmatic learners to indoor and outdoor air pollution at schools. This study compared outdoor PM10 and SO2 exposure levels in exposed (1-2 km from gold mine dumps) and unexposed schools (5 km or more from gold mine dumps). It also examined exposure of asthmatic children to indoor respirable dust at exposed and unexposed schools. METHODS: The study was conducted between 1 and 31 October 2012 in five schools from exposed and five from unexposed communities...
January 6, 2017: BMC Public Health
https://www.readbyqxmd.com/read/28057131/-interaction-between-smoking-and-indoor-air-pollution-on-chronic-obstructive-pulmonary-diseases
#2
D X Pan, Y J Qian, C M Wang, Y Guo, Z Bian, K X Xie, L L Chen, Y D Zhang, Q Y Li
Objective: To investigate the prevalence of chronic obstructive pulmonary diseases (COPD) in Tongxiang, Zhejiang province, and analyze the interaction between smoking and indoor air pollution on COPD. Methods: Townships of Chongfu, Zhouquan, Gaoqiao, Shimen, Wuzhen were randomly selected from Tongxiang. All the local people aged 30-79 years were asked to receive questionnaire survey, physical examination and pulmonary function testing. FEV1max/FVC max≤0.7 was the criterion of COPD diagnosis. Logistic regression model was used to analyze the relationship between smoking/indoor air pollution and COPD, multiplied interaction between smoking and indoor air pollution was evaluated, Excel table prepared by Andersson et al...
November 10, 2016: Zhonghua Liu Xing Bing Xue za Zhi, Zhonghua Liuxingbingxue Zazhi
https://www.readbyqxmd.com/read/28045447/investigation-of-indoor-air-quality-in-houses-of-macedonia
#3
Silvia Vilčeková, Ilija Zoran Apostoloski, Ľudmila Mečiarová, Eva Krídlová Burdová, Jozef Kiseľák
People who live in buildings are exposed to harmful effects of indoor air pollution for many years. Therefore, our research is aimed to investigate the indoor air quality in family houses. The measurements of indoor air temperature, relative humidity, total volatile organic compounds (TVOC), particulate matters (PM) and sound pressure level were carried out in 25 houses in several cities of the Republic of Macedonia. Mean values of indoor air temperature and relative humidity ranged from 18.9 °C to 25.6 °C and from 34...
January 1, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28041660/-respiratory-symptoms-and-obstructive-ventilatory-disorder-in-tunisian-woman-exposed-to-biomass
#4
H Kwas, N Rahmouni, I Zendah, H Ghedira
INTRODUCTION: In some Tunisian cities, especially semi-urbanized, the exposure to the smoke produced during combustion of the biomass, main source of pollution of indoor air, remains prevalent among non-smoking women. AIM: To assess the relationship between exposure to biomass smoke and the presence of obstructive ventilatory disorder in the non-smoking women in semi-urban areas of Tunisia. METHODS: Cross etiological study, using a questionnaire, including 140 non-smoking women responsible for cooking and/or exposed during heating by traditional means with objective measurement of their respiratory functions...
December 29, 2016: Revue de Pneumologie Clinique
https://www.readbyqxmd.com/read/28039826/indoor-airborne-particle-sources-and-outdoor-haze-days-effect-in-urban-office-areas-in-guangzhou
#5
Manwen Zhang, Sukun Zhang, Guixian Feng, Hui Su, Fengzhi Zhu, Mingzhong Ren, Zongwei Cai
To identify the sources of PM2.5 pollutants in work environments and determine whether the air quality inside an office was affected by a change in outdoor pollution status, concurrent indoor and outdoor measurements of PM2.5 were conducted at five different office spaces in the urban center of Guangzhou on low pollution days (non-episode days, NEDs), and high pollution days (haze episode days, EDs). Indoor-outdoor relationships between the PM2.5 mass and its chemical constituents, which included water-soluble ions, carbonaceous species, and metal elements, were investigated...
December 28, 2016: Environmental Research
https://www.readbyqxmd.com/read/28032933/swimming-attendance-during-childhood-and-development-of-asthma-a-meta-analysis
#6
F Valeriani, C Protano, M Vitali, V Romano Spica
BACKGROUND: The association between asthma and swimming pool attendance has not been demonstrated and contrasting results emerged. In order to clarify the association between asthma diagnosis in children and swimming pool attendance, and to assess the consistency of findings of the available epidemiological studies, we completed a literature analysis focusing on literature about the relationship between the exposure to disinfection by-products in indoor swimming pool during childhood and asthma diagnosis...
December 29, 2016: Pediatrics International: Official Journal of the Japan Pediatric Society
https://www.readbyqxmd.com/read/28029585/interaction-between-airborne-copper-exposure-and-atp7b-polymorphisms-on-inattentiveness-in-scholar-children
#7
S Alemany, N Vilor-Tejedor, M Bustamante, M Álvarez-Pedrerol, I Rivas, J Forns, X Querol, J Pujol, J Sunyer
Recent research indicates that airborne copper exposure in scholar children negatively affects brain functioning. These effects are likely to be influenced by the efficiency of copper metabolism, which is partly regulated by the ATPase copper transporting beta (ATP7B) gene. We investigated whether indoor and outdoor airborne copper exposure is differentially associated with child inattentiveness depending on genetic variation within the ATP7B gene in 1645 scholar children from the BREATHE project. Outdoor (courtyard) and indoor (classroom) air pollution levels were measured during class hours in each school...
October 22, 2016: International Journal of Hygiene and Environmental Health
https://www.readbyqxmd.com/read/28027642/direct-blow-spinning-of-nanofibers-on-a-window-screen-for-highly-efficient-pm2-5-removal
#8
Bilal Khalid, Xiaopeng Bai, Hehe Wei, Ya Huang, Hui Wu, Yi Cui
Particulate matter (PM) pollution has caused many serious public health issues. Whereas indoor air protection usually relies on expensive and energy-consuming filtering devices, direct PM filtration by window screens has attracted increasing attention. Recently, electrospun polymer nanofiber networks have been developed as transparent filters for highly efficient PM2.5 removal; however, it remains challenging to uniformly coat the nanofibers on window screens on a large scale and with low cost. Here, we report a blow-spinning technique that is fast, efficient, and free of high voltages for the large-scale direct coating of nanofibers onto window screens for indoor PM pollution protection...
January 4, 2017: Nano Letters
https://www.readbyqxmd.com/read/28012314/do-air-quality-targets-really-represent-safe-limits-for-lung-cancer-risk
#9
G Buonanno, L Stabile, L Morawska, G Giovinco, X Querol
In order to estimate the lung cancer risk associated to airborne particles, exposure and risk-assessment studies ordinarily use particle mass concentration as dosimetry parameter. Consequently, the corresponding air quality targets are based on this metrics, neglecting the potential impact of ultrafine particles (UFPs) due to their negligible mass. The main purpose of this study was to evaluate the reliability of air quality targets in protecting Italian non-smoking people from lung cancer risk due to exposure to polycyclic aromatic hydrocarbons and some heavy metals associated with particle inhalation...
December 21, 2016: Science of the Total Environment
https://www.readbyqxmd.com/read/28008856/interaction-between-airborne-copper-exposure-and-atp7b-polymorphisms-on-inattentiveness-in-scholar-children
#10
S Alemany, N Vilor-Tejedor, M Bustamante, M Álvarez-Pedrerol, I Rivas, J Forns, X Querol, J Pujol, J Sunyer
Recent research indicates that airborne copper exposure in scholar children negatively affects brain functioning. These effects are likely to be influenced by the efficiency of copper metabolism, which is partly regulated by the ATPase copper transporting beta (ATP7B) gene. We investigated whether indoor and outdoor airborne copper exposure is differentially associated with child inattentiveness depending on genetic variation within the ATP7B gene in 1645 scholar children from the BREATHE project. Outdoor (courtyard) and indoor (classroom) air pollution levels were measured during class hours in each school...
January 2017: International Journal of Hygiene and Environmental Health
https://www.readbyqxmd.com/read/28005965/formaldehyde-induced-aggravation-of-pruritus-and-dermatitis-is-associated-with-the-elevated-expression-of-th1-cytokines-in-a-rat-model-of-atopic-dermatitis
#11
Rafael Taeho Han, Seung Keun Back, Hyunkyoung Lee, JaeHee Lee, Hye Young Kim, Hee Jin Kim, Heung Sik Na
Atopic dermatitis is a complex disease of heterogeneous pathogenesis, in particular, genetic predisposition, environmental triggers, and their interactions. Indoor air pollution, increasing with urbanization, plays a role as environmental risk factor in the development of AD. However, we still lack a detailed picture of the role of air pollution in the development of the disease. Here, we examined the effect of formaldehyde (FA) exposure on the manifestation of atopic dermatitis and the underlying molecular mechanism in naive rats and in a rat model of atopic dermatitis (AD) produced by neonatal capsaicin treatment...
2016: PloS One
https://www.readbyqxmd.com/read/28000683/elemental-analysis-of-infant-airborne-particulate-exposures
#12
Chantel D Sloan, Frank X Weber, Rebecca K Bradshaw, Tyler J Philipp, W Bradford Barber, Vanessa L Palmer, Robert J Graul, Steven C Tuttle, Ryan T Chartier, James D Johnston
Air pollution is hypothesized to have negative impacts on infant pulmonary health because of infants' increased rates of respiration and ongoing lung development. The severity and type of impact may differ depending on elemental concentrations. We conducted a study of 21 infants <6 months old whose parents carried a small personal particulate monitoring device (RTI MicroPEM) and GPS unit with the infant for 7 days in January and February 2015. The study area was Utah County, UT, USA. Real-time particulate exposure levels, as well as optical density and elemental analysis of the particulate matter (PM), were compared with levels from an outdoor stationary monitor...
December 21, 2016: Journal of Exposure Science & Environmental Epidemiology
https://www.readbyqxmd.com/read/28000117/monitoring-indoor-air-quality-for-enhanced-occupational-health
#13
Rui Pitarma, Gonçalo Marques, Bárbara Roque Ferreira
Indoor environments are characterized by several pollutant sources. Because people spend more than 90% of their time in indoor environments, several studies have pointed out the impact of indoor air quality on the etiopathogenesis of a wide number of non-specific symptoms which characterizes the "Sick Building Syndrome", involving the skin, the upper and lower respiratory tract, the eyes and the nervous system, as well as many building related diseases. Thus, indoor air quality (IAQ) is recognized as an important factor to be controlled for the occupants' health and comfort...
February 2017: Journal of Medical Systems
https://www.readbyqxmd.com/read/27996287/association-of-indoor-air-quality-and-preschool-children-s-respiratory-symptoms
#14
Pongtong Puranitee, Sirinapa Siwarom, Adisak Plitponkarnpim, Wiparat Manuyakorn, Ratchaneewan Sinitkul, Sakda Arj-Ong Vallipakorn
BACKGROUND: This study aimed to assess the association between exposure to indoor air pollution in DCCs (Child Day Care Centers) and the respiratory symptoms of children under 6 years old. METHODS: Air quality data were collected three times regarding seasonal variation. Pollutants measured in 11 DCCs included PM10, CO, NO2, SO2, O3, benzene, bacteria, fungi, and dust mite. The frequency of respiratory symptoms including coughing, rhinitis, and dyspnea were recorded via teacher and parent-report questionnaires...
December 12, 2016: Asian Pacific Journal of Allergy and Immunology
https://www.readbyqxmd.com/read/27966668/predictors-of-polycyclic-aromatic-hydrocarbon-exposure-and-internal-dose-in-inner-city-baltimore-children
#15
Kamau O Peters, D' Ann L Williams, Salahadin Abubaker, Jean Curtin-Brosnan, Meredith C McCormack, Roger Peng, Patrick N Breysse, Elizabeth C Matsui, Nadia N Hansel, Gregory B Diette, Paul T Strickland
Polycyclic aromatic hydrocarbons (PAHs), the by-products of incomplete combustion of organic materials, are commonly found on particulate matter (PM) and have been associated with the development of asthma and asthma exacerbation in urban populations. We examined time spent in the home and outdoors as predictors of exposures to airborne PAHs and measured urinary 1-hydroxypyrene-glucuronide (1-OHPG) as internal dose of PAHs in 118 children aged 5-12 years from Baltimore, MD. During weeklong periods (Saturday-Saturday) in each of four seasons: daily activities were assessed using questionnaires, indoor air nicotine and PM concentrations were monitored, and urine specimens were collected on Tuesday (day 3) and Saturday (day 7) for measurement of 1-OHPG...
December 14, 2016: Journal of Exposure Science & Environmental Epidemiology
https://www.readbyqxmd.com/read/27951498/a-prediction-model-of-ammonia-emission-from-a-fattening-pig-room-based-on-the-indoor-concentration-using-adaptive-neuro-fuzzy-inference-system
#16
Qiuju Xie, Ji-Qin Ni, Zhongbin Su
Ammonia (NH3) is considered one of the significant pollutions contributor to indoor air quality and odor gas emission from swine house because of the negative impact on the health of pigs, the workers and local environment. Prediction models could provide a reasonable way for pig industries and environment regulatory to determine environment control strategies and give an effective method to evaluate the air quality. The adaptive neuro fuzzy inference system (ANFIS) simulates human's vague thinking manner to solve the ambiguity and nonlinear problems which are difficult to be processed by conventional mathematics...
March 5, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/27941696/effects-of-indoor-air-pollutants-on-atopic-dermatitis
#17
JaKyoung Kim, HyungJin Kim, DaeHyun Lim, Young-Kyu Lee, Jeong Hee Kim
The increasing prevalence of atopic dermatitis (AD) is associated with variations in indoor environments. In Korea, many inner walls of homes are covered with wallpaper: such walls emit indoor air pollutants, including volatile organic compounds (VOCs) and formaldehyde. This randomized, double-blind study investigated the effects of wallpaper on indoor air quality and AD. Thirty-one children (aged three to eight years) with moderate AD were assigned to environmentally-friendly (EF) and polyvinyl chloride (PVC) wallpaper groups...
December 9, 2016: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/27940791/indoor-environmental-control-practices-and-asthma-management
#18
Elizabeth C Matsui, Stuart L Abramson, Megan T Sandel
Indoor environmental exposures, particularly allergens and pollutants, are major contributors to asthma morbidity in children; environmental control practices aimed at reducing these exposures are an integral component of asthma management. Some individually tailored environmental control practices that have been shown to reduce asthma symptoms and exacerbations are similar in efficacy and cost to controller medications. As a part of developing tailored strategies regarding environmental control measures, an environmental history can be obtained to evaluate the key indoor environmental exposures that are known to trigger asthma symptoms and exacerbations, including both indoor pollutants and allergens...
November 2016: Pediatrics
https://www.readbyqxmd.com/read/27936627/profiling-the-serum-albumin-cys34-adductome-of-solid-fuel-users-in-xuanwei-and-fuyuan-china
#19
Sixin S Lu, Hasmik Grigoryan, William M B Edmands, Wei Hu, Anthony T Iavarone, Alan Hubbard, Nathaniel Rothman, Roel Vermeulen, Qing Lan, Stephen M Rappaport
Xuanwei and Fuyuan counties in China have the highest lung cancer rates in the world due to household air pollution from combustion of smoky coal for cooking and heating. To discover potential biomarkers of indoor combustion products, we profiled adducts at the Cys34 locus of human serum albumin (HSA) in 29 nonsmoking Xuanwei and Fuyuan females who used smoky coal, smokeless coal, or wood and 10 local controls who used electricity or gas fuel. Our untargeted "adductomics" method detected 50 tryptic peptides of HSA, containing Cys34 and prominent post-translational modifications...
January 3, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/27936552/highly-selective-xylene-sensor-based-on-nio-nimoo4-nanocomposite-hierarchical-spheres-for-indoor-air-monitoring
#20
Bo-Young Kim, Jee Hyun Ahn, Ji-Wook Yoon, Chul-Soon Lee, Yun Chan Kang, Faissal Abdel-Hady, Abdulaziz A Wazzan, Jong-Heun Lee
Xylene is a hazardous volatile organic compound, which should be measured precisely for monitoring of indoor air quality. The selective detection of ppm-level xylene using oxide semiconductor chemiresistors, however, remains a challenging issue. In this study, NiO/NiMoO4 nanocomposite hierarchical spheres assembled from nanosheets were prepared by hydrothermal reaction, and the potential of sensors composed of these nanocomposites to selectively detect xylene gas was investigated. The sensors based on the NiO/NiMoO4 nanocomposite hierarchical spheres exhibited high responses (maximum resistance ratio =101...
December 21, 2016: ACS Applied Materials & Interfaces
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