A5029717037- Air Quality and Health Impacts
- Indoor Air Quality and Microbial Exposure
- Air Quality Monitoring and Forecasting
- Atmospheric chemistry and aerosols
- Odor and Emission Control Technologies
- Climate Change and Health Impacts
- Vehicle emissions and performance
- Chronic Obstructive Pulmonary Disease (COPD) Research
- Occupational health in dentistry
- Thermodynamic properties of mixtures
- Occupational exposure and asthma
- Urban Transport and Accessibility
- Neonatal Respiratory Health Research
- Environmental Justice and Health Disparities
- Asthma and respiratory diseases
- Contact Dermatitis and Allergies
- Medical and Biological Ozone Research
- Occupational Health and Safety Research
- Calibration and Measurement Techniques
- activated carbon and charcoal
- Respiratory Support and Mechanisms
- Noise Effects and Management
- Atmospheric Ozone and Climate
- Laser Applications in Dentistry and Medicine
- Chemical Thermodynamics and Molecular Structure
Umeå University
2001-2014
Science for Life Laboratory
1999-2007
Exposure to ozone (O3) impairs lung function, induces airway inflammation and alters epithelial permeability. Whilst impaired function neutrophilia have been observed at relatively low concentrations, altered permeability is only seen after high-dose challenges. The appearance of Clara cell protein (CC16) in serum has proposed as a sensitive marker injury. Here, the use CC16 an injury biomarker was evaluated under controlled exposure O3 relationship between this early decrements...
Exposure to trichloramine (NCl(3)) in indoor swimming-pool environments is known cause mucous membrane irritation, but if it gives rise changes lung function or asthma adults not known. (1) We determined volunteers before and after exposure pool environments. (2) studied the occurrence of respiratory symptoms a cohort workers. DESIGN/METHODS/PARTICIPANTS: two groups volunteers, 37 previously non-exposed healthy persons 14 workers, who performed exercise for 2 h an environment. NCl(3) air was...
Ground level ozone [ozone] is considered a harmful air pollutant but there knowledge gap regarding its long term health effects. The main aim of this study to develop local Land Use Regression [LUR] models that can be used effects ozone. specific spatial LUR for two Swedish cities, Umeå and Malmö, as well temporal model Malmö in order assess exposure epidemiological studies. For the we measured ozone, using Ogawa passive samplers, weekly averages at 40 sites each area, during three seasons....
A small-scale field trial in Umeå, Sweden with Ogawa samplers and a chemiluminescence instrument indicated that the NO2 concentration was underestimated respect to reference monitor, if calculated according manufacturer's sampling protocol. By co-locating monitors at six sites two Swedish cities, uptake rates were determined for NOx better applicable conditions climate. The concentrations of instruction manual sampler using field-determined compared values derived from each week over which...
The Willems badge, a short-term diffusion sampler, was used to measure nitrogen dioxide concentrations inside and outside the homes of participants in European study "PEACE' (Pollution Effects on Asthmatic Children Europe). main aim determine levels both children's homes, estimate indoor/outdoor ratios for an urban area, comparison with less urbanized control area. We conducted measurements 23 Umeå, city about 100,000 inhabitants northern part Sweden, addition 20 area situated km from Umeå....
The aim of this study was to investigate the relation between two toxic volatile organic compounds, 1,3-butadiene and benzene, a commonly used indicator vehicle exhaust fumes, NO2. This see if NO2 can be indicate personal exposure carcinogenic substances or at least estimate ambient levels measured stationary point. During winter 2001, 40 randomly selected persons living in City Umeå (in north Sweden) were recruited study. Personal measurements 1,3-butadiene, benzene performed for one week,...
Objective. Ozone (O3) has been suggested as an anti-microbial treatment in dentistry, with ozone gas delivery system introduced for the of fissure and root caries. The aim this study was to investigate sealing capacity novel its re-suction during accidental displacement cup at different stages delivery. Material methods. leakage studied vitro after application on a flat metal surface buccal occlusal tooth surfaces. An analyzer used measure concentrations adjacent delivering cups when adapted...
A diffusive sampler for NO 2 , Willems badge, was validated in laboratory experiments and field tests. The collecting reagent the is triethanolamine, analysis based on a modified colorimetric method, Saltzman method. performed by flow injection (FIA) technique. sampling rate determined to be 40.0 ml min –1 . There no effect of concentration or relative humidity rate, influence time found small. detection limit 4 µg m –3 24 h sample. capacity high enough allow 150 7 days, which twice...
The Willems badge, a diffusive sampler for nitrogen dioxide, has previously been validated ambient air measurements. This paper describes the laboratory and field validation of badge personal sampling under working environment conditions. mean rate in tests was 46 ml min−1, with an RSD 12%. No statistically significant effects on time, concentration NO2 or relative humidity were found. A slightly decreased observed at low wind velocity. also confirmed during static sampling, which makes less...
Methyl methacrylate (MMA) is a commonly used chemical in dental work that can cause dermatitis. Nineteen technicians participated field study which potential dermal exposure to MMA and determinants, including glove use vapour the breathing zone, were repeatedly monitored during three consecutive days. Using patches placed on various parts of their hands we observed fingers palms exposed MMA, forefingers significantly more than ring fingers; this based pooled data for both left right (p =...
ISEE-0445 Background and Objective: The Ogawa diffusive sampler is used for NO2/NOx measurements in ambient air monitoring networks. Field comparisons with reference monitors have been carried out Texas Michigan. currently the ESCAPE project measuring spatial variation 40 different areas Europe. Aims; assess NO2 NOx uptake rates, perform field chemiluminescence monitors, a cold climate. Methods: Weekly parallel of (NOx) were conducted at 13(4) occasions Umeå, Sweden 11(11) two sites Malmö,...
Background Ozone is a pollutant known to cause adverse effects on human health. It formed by reactions between nitrogen oxides (NOx) and hydrocarbons under the influence of sunlight. In urban areas ozone consumed oxidating oxide (NO) dioxide (NO2). Despite potential health effects, local spatial distribution relationship ozone, NO2 NOx in different environments poorly studied. Aims Our aim was study concentrations two cities, Malmö south Sweden Umeå north Sweden, since contribution from...
Ozone variation in time and space Background: Air pollution exposure models are getting improved for some pollutants such as NOx. However, there other possibly detrimental health, ozone, which no good exist. Aim: To develop a regression model aiming at explaining variations ozone. Method: We measured levels of ozone 40 stations the South Sweden North during spring, summer autumn with weekly resolution. For 3 measurement we collected daily developed two separate land use measurements areas....
BackgroundTraffic is often the most important emission source for ambient air pollution in urban areas, although other sources locally can be at least as important. Small scale biofuel burning emits a wide range of pollutants, which many are also substances vehicle exhaust. AimThis study aimed to develop Land Use Regression model (LUR) predict concentrations benzene and 1,3-butadiene, accounting emissions from both traffic biofuels. MethodsYearly average 1,3-butadiene were estimated...