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https://www.readbyqxmd.com/read/29324847/sabina-chinensis-and-liriodendron-chinense-improve-air-quality-in-beijing-china
#1
Yanan Wu, Wenmei Ma, Jiakai Liu, Lijuan Zhu, Ling Cong, Jiexiu Zhai, Yu Wang, Zhenming Zhang
Urban forests have been shown to be efficient for reducing air pollutants especially for particulate matters (PMs). This study aims to reveal the PM blocking capacity of two common artificial landscape species, Sabina chinensis and Liriodendron chinense and to investigate spatial-temporal heterogeneities by estimating the vegetation collection velocity of coarse (PM10) and fine particles (PM2.5) during different seasons and heights. PM concentration and meteorological data were collected on both leeward and windward sides of trees during the daytime in both summers and winters from 2013 to 2015...
2018: PloS One
https://www.readbyqxmd.com/read/29318964/potential-role-of-inflammation-in-associations-between-particulate-matter-and-heart-failure
#2
Xiaotong Ji, Yingying Zhang, Guangke Li, Nan Sang
Recently, numerous studies have found that particulate matter (PM) exposure is correlated with increased hospitalization and mortality from heart failure (HF). In addition to problems with circulation, HF patients often display high expression of cytokines in the failing heart. Thus, as a recurring heart problem, HF is thought to be a disorder characterized in part by the inflammatory response. In this review, we intend to discuss the relationship between PM exposure and HF that is based on inflammatory mechanism and to provide a comprehensive, updated evaluation of the related studies...
January 10, 2018: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/29291527/improve-ground-level-pm2-5-concentration-mapping-using-a-random-forests-based-geostatistical-approach
#3
Ying Liu, Guofeng Cao, Naizhuo Zhao, Kevin Mulligan, Xinyue Ye
Accurate measurements of ground-level PM2.5 (particulate matter with aerodynamic diameters equal to or less than 2.5 μm) concentrations are critically important to human and environmental health studies. In this regard, satellite-derived gridded PM2.5 datasets, particularly those datasets derived from chemical transport models (CTM), have demonstrated unique attractiveness in terms of their geographic and temporal coverage. The CTM-based approaches, however, often yield results with a coarse spatial resolution (typically at 0...
December 29, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/29276642/young-adult-street-vendors-and-adverse-respiratory-health-outcomes-in-bangkok-thailand
#4
Saisattha Noomnual, Derek G Shendell
Air pollutants of concern include traffic-related air pollution, including particulate matter in respirable coarse and fine size fractions. There are no critical studies to date into associations between knowledge, awareness, and attitudes in using proper respiratory masks and prevalence of respiratory symptoms among urban street vendors in Thailand. In this study, we estimated adverse respiratory health outcomes among street vendors, in particular young adults, in Bangkok, Thailand, using a self-report questionnaire...
December 2017: Safety and Health At Work
https://www.readbyqxmd.com/read/29243937/long-term-coarse-pm-exposure-is-associated-with-asthma-among-children-in-medicaid
#5
Corinne A Keet, Joshua P Keller, Roger D Peng
RATIONALE: Short and long-term fine particulate matter (PM2.5) pollution is associated with asthma development and morbidity, but there is little data on the effects of long-term exposure to coarse PM (PM10-2.5) on respiratory health. OBJECTIVES: To understand the relationship between long-term fine and coarse PM exposure and asthma prevalence and morbidity among children. METHODS: A semi-parametric regression model that incorporated PM2.5 and PM10 monitor data and geographic characteristics was developed to predict two-year average PM2...
December 15, 2017: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/29202419/ultrafine-particulate-matter-impairs-mitochondrial-redox-homeostasis-and-activates-phosphatidylinositol-3-kinase-mediated-dna-damage-responses-in-lymphocytes
#6
Arpit Bhargava, Shivani Tamrakar, Aniket Aglawe, Harsha Lad, Rupesh Kumar Srivastava, Dinesh Kumar Mishra, Rajnarayan Tiwari, Koel Chaudhury, Irina Yu Goryacheva, Pradyumna Kumar Mishra
Particulate matter (PM), broadly defined as coarse (2.5-10 μm), fine (0.1-2.5 μm) and ultrafine particles (≤0.1 μm), is a major constituent of ambient air pollution. Recent studies have linked PM exposure (coarse and fine particles) with several human diseases including cancer. However, the molecular mechanisms underlying ultrafine PM exposure induced cellular and sub-cellular repercussions are ill-defined. Since mitochondria are one of the major targets of different environmental pollutants, we herein aimed to understand the molecular repercussion of ultrafine PM exposure on mitochondrial machinery in peripheral blood lymphocytes...
December 1, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/29197266/importance-of-mineral-dust-and-anthropogenic-pollutants-mixing-during-a-long-lasting-high-pm-event-over-east-asia
#7
Zhe Wang, Xiaole Pan, Itsushi Uno, Xueshun Chen, Shigekazu Yamamoto, Haitao Zheng, Jie Li, Zifa Wang
A long-lasting high particulate matter (PM) concentration episode persisted over East Asia from May 24 to June 3, 2014. The Nested Air Quality Prediction Model System (NAQPMS) was used to investigate the mixing of dust and anthropogenic pollutants during this episode. Comparison of observations revealed that the NAQPMS successfully reproduced the time series PM2.5 and PM10 concentrations, as well as the nitrate and sulfate concentrations in fine (aerodynamic diameter ≤ 2.5 μm) and coarse mode (2.5 μm < aerodynamic diameter ≤ 10 μm)...
November 29, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/29192765/development-of-an-in-vitro-based-risk-assessment-framework-for-predicting-ambient-particulate-matter-bound-polycyclic-aromatic-hydrocarbon-activated-toxicity-pathways
#8
Wei-Chun Chou, Chin-Yu Hsu, Chia-Chi Ho, Jui-Hua Hsieh, Hung-Che Chiang, Tsui-Chun Tsou, Yu-Cheng Chen, Pinpin Lin
Polycyclic aromatic hydrocarbons (PAHs) are widely distributed throughout the atmosphere as mixtures attached to ambient particulate matter (PM). PAHs usually elicit similar toxicological pathways but do so with varying levels of efficacy. In this study, we utilized high-throughput screening (HTS) in vitro data of PAHs to predict health risks associated with coarse and fine PM. PM samples with 22 PAH compounds obtained from residential areas close to industrial parks in central Taiwan were analyzed. On the basis of the PM-bound PAH concentrations and their activities reported in HTS assays, we developed a probabilistic model for estimating cumulative exposure of humans to PAHs...
December 1, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/29175476/source-apportionment-of-aerosol-particles-at-a-european-air-pollution-hot-spot-using-particle-number-size-distributions-and-chemical-composition
#9
Cecilia Leoni, Petra Pokorná, Jan Hovorka, Mauro Masiol, Jan Topinka, Yongjing Zhao, Kamil Křůmal, Steven Cliff, Pavel Mikuška, Philip K Hopke
Ostrava in the Moravian-Silesian region (Czech Republic) is a European air pollution hot spot for airborne particulate matter (PM), polycyclic aromatic hydrocarbons (PAHs), and ultrafine particles (UFPs). Air pollution source apportionment is essential for implementation of successful abatement strategies. UFPs or nanoparticles of diameter <100 nm exhibit the highest deposition efficiency in human lungs. To permit apportionment of PM sources at the hot-spot including nanoparticles, Positive Matrix Factorization (PMF) was applied to highly time resolved particle number size distributions (NSD, 14 nm-10 μm) and PM0...
November 22, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/29167600/allergenic-asteraceae-in-air-particulate-matter-quantitative-dna-analysis-of-mugwort-and-ragweed
#10
I Müller-Germann, D A Pickersgill, H Paulsen, B Alberternst, U Pöschl, J Fröhlich-Nowoisky, V R Després
Mugwort (Artemisia vulgaris) and ragweed (Ambrosia artemisiifolia) are highly allergenic Asteraceae. They often cause pollen allergies in late summer and fall. While mugwort is native to Europe, ragweed reached Europe as a neophyte from North America about 150 years ago and continued spreading ever since. To understand possible relationships between the spread of ragweed, its abundance in air, and to judge possible health risks for the public, we quantified ragweed DNA in inhalable fine as well as in coarse air particulate matter...
2017: Aerobiologia
https://www.readbyqxmd.com/read/29166940/effects-of-urban-coarse-particles-inhalation-on-oxidative-and-inflammatory-parameters-in-the-mouse-lung-and-colon
#11
Cécile Vignal, Muriel Pichavant, Laurent Y Alleman, Madjid Djouina, Florian Dingreville, Esperanza Perdrix, Christophe Waxin, Adil Ouali Alami, Corinne Gower-Rousseau, Pierre Desreumaux, Mathilde Body-Malapel
BACKGROUND: Air pollution is a recognized aggravating factor for pulmonary diseases and has notably deleterious effects on asthma, bronchitis and pneumonia. Recent studies suggest that air pollution may also cause adverse effects in the gastrointestinal tract. Accumulating experimental evidence shows that immune responses in the pulmonary and intestinal mucosae are closely interrelated, and that gut-lung crosstalk controls pathophysiological processes such as responses to cigarette smoke and influenza virus infection...
November 22, 2017: Particle and Fibre Toxicology
https://www.readbyqxmd.com/read/29165140/comparison-between-air-pollution-concentrations-measured-at-the-nearest-monitoring-station-to-the-delivery-hospital-and-those-measured-at-stations-nearest-the-residential-postal-code-regions-of-pregnant-women-in-fukuoka
#12
Takehiro Michikawa, Seiichi Morokuma, Hiroshi Nitta, Kiyoko Kato, Shin Yamazaki
BACKGROUND: Numerous earlier studies examining the association of air pollution with maternal and foetal health estimated maternal exposure to air pollutants based on the women's residential addresses. However, residential addresses, which are personally identifiable information, are not always obtainable. Since a majority of pregnant women reside near their delivery hospitals, the concentrations of air pollutants at the respective delivery hospitals may be surrogate markers of pollutant exposure at home...
June 13, 2017: Environmental Health and Preventive Medicine
https://www.readbyqxmd.com/read/29080527/health-impact-assessment-from-building-life-cycles-and-trace-metals-in-coarse-particulate-matter-in-urban-office-environments
#13
Murnira Othman, Mohd Talib Latif, Ahmad Fariz Mohamed
This study intends to determine the health impacts from two office life cycles (St.1 and St.2) using life cycle assessment (LCA) and health risk assessment of indoor metals in coarse particulates (particulate matter with diameters of less than 10µm). The first building (St.1) is located in the city centre and the second building (St.2) is located within a new development 7km away from the city centre. All life cycle stages are considered and was analysed using SimaPro software. The trace metal concentrations were determined by inductively couple plasma-mass spectrometry (ICP-MS)...
October 25, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/29077110/seasonal-variation-and-risk-assessment-of-pm2-5-and-pm2-5-10-in-the-ambient-air-of-kenitra-morocco
#14
Mounia Tahri, Abdelfettah Benchrif, Moussa Bounakhla, Fouad Benyaich, Yves Noack
The seasonal and spatial variations of particulate matter (PM2.5-10 and PM2.5) and its chemical composition have been studied over a one-year period in Kenitra city (2007-2008). The samples were collected using Gent stacked filters and dichotomous samplers in two size fractions: below 2.5 μm (fine) and 2.5 to 10 μm (coarse). The chemical compositions of the collected filters were evaluated by using Total X-ray Fluorescence and Atomic Absorption Spectroscopy. The influence of atmospheric transport scenarios on the levels of PM was elaborated by means of air mass back-trajectories, using the HYSPLIT™ model...
November 15, 2017: Environmental Science. Processes & Impacts
https://www.readbyqxmd.com/read/29049943/occurrence-and-profile-of-organophosphorus-compounds-in-fine-and-coarse-particulate-matter-from-two-urban-areas-of-china-and-pakistan
#15
Yasir Faiz, Naila Siddique, Huan He, Cheng Sun, Shahida Waheed
Seven organophosphorus compounds (OPs) were measured in urban fine and coarse particulate matter (PM) collected from two sites of Nanjing (XCNUC), China and Islamabad (APHSP), Pakistan. The fine PM mass at APHSP site was significantly higher (p = 0.005) in the spring (mean 22.5 μg/m(3)) than in the summer (mean 12.7 μg/m(3)). The total concentration, ∑(7)OPs, of samples collected at APHSP was found significantly higher in coarse (range 672-47621 pg/m(3)) than in fine PM (range 1200-15213 pg/m(3)); while ∑(7)OPs from XCNUC in fine (range 1696-15063 pg/m(3)) and coarse PM (range 2053-5379 pg/m(3)) were statistically different in samples during summer, based on two-sample t-test at 0...
October 16, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28955600/analysis-of-remotely-sensed-and-surface-data-of-aerosols-and-meteorology-for-the-mexico-megalopolis-area-between-2003-and-2015
#16
Marco Mora, Rachel A Braun, Taylor Shingler, Armin Sorooshian
This paper presents an aerosol characterization study from 2003 to 2015 for the Mexico City Metropolitan Area using remotely sensed aerosol data, ground-based measurements, air mass trajectory modeling, aerosol chemical composition modeling, and reanalysis data for the broader Megalopolis of Central Mexico region. The most extensive biomass burning emissions occur between March and May concurrent with the highest aerosol optical depth, ultraviolet aerosol index, and surface particulate matter (PM) mass concentration values...
August 27, 2017: Journal of Geophysical Research. Atmospheres: JGR
https://www.readbyqxmd.com/read/28915541/temporal-variability-in-aerosol-characteristics-and-its-radiative-properties-over-patiala-northwestern-part-of-india-impact-of-agricultural-biomass-burning-emissions
#17
D Sharma, A K Srivastava, K Ram, A Singh, D Singh
A comprehensive measurements of aerosol optical depth (AOD), particulate matter (PM) and black carbon (BC) mass concentrations have been carried out over Patiala, a semi-urban site in northwest India during October 2008 to September 2010. The measured aerosol data was incorporated in an aerosol optical model to estimate various aerosol optical parameters, which were subsequently used for radiative forcing estimation. The measured AOD at 500 nm (AOD500) shows a significant seasonal variability, with maximum value of 0...
December 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28887799/study-of-polar-organic-compounds-in-airborne-particulate-matter-of-a-coastal-urban-city
#18
Dimitra Balla, Dimitra Voutsa, Constantini Samara
Two classes of polar organic compounds, dicarboxylic acids (DCAs) and sugars/sugar anhydrides (S/SAs), were measured in airborne particulate matter in the area of Thessaloniki, northern Greece. The target compounds were measured simultaneously in two particle fractions PM10 and PM2.5 during cold and warm periods by employing extraction in an ultrasonic bath with a mixture of MeOH/DCM (1:2 v/v), derivatization with BSTFA-TMCS and GC-MS for analysis. At both fractions, phthalic was the predominant carboxylic acid during cold season and a-ketoglutaric acid in warm season, followed by maleic and malic...
September 8, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28886548/investigating-the-impact-of-different-sport-trainings-on-particulate-matter-resuspension-in-a-sport-center-using-well-characterized-reference-instruments-and-a-low-cost-monitor
#19
Mehdi Amouei Torkmahalleh, Karakat Kabay, Meruyet Bazhanova, Obaidullah Mohiuddin, Madina Obaidullah, Soudabeh Gorjinezhad
The present study investigated the exposure of teenagers, adults, and students to PM1, PM2.5, PM4, PM10, particle number concentration at two sport facilities of Nazarbayev University including Gymnastics Hall and Multi-purpose Hall. Measurements were conducted during variety of sport training sessions including soccer, basketball, volleyball, Mixed Martial Arts (MMA), boxing, table tennis, etc. A low-cost instrument, Dylos was employed to compare its performance against two TSI instruments. In overall, the Dylos showed acceptable peaks when the source of particle resuspension was present...
January 15, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/28822504/is-smog-innocuous-air-pollution-and-cardiovascular-disease
#20
EDITORIAL
Sundeep Mishra
Air pollution is a significant environmental and health hazard. Earlier studies had examined the adverse health effects associated with short- and long-term exposure to particulate matter on respiratory disease. However, later studies demonstrated that was actually cardiovascular disease that accounted for majority of mortality. Furthermore, it was not gaseous pollutants like oxides of nitrate, sulfur, carbon mono-oxide or ozone but the particulate matter or PM, of fine or coarse size (PM2.5 and PM10) which was linearly associated with mortality; PM2...
July 2017: Indian Heart Journal
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