Evaluation of a Passive Real-time Miniature Aerosol Monitor PDF Download
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Author: Sidney DeGarmo (James)
Publisher:
ISBN:
Category :
Languages : en
Pages : 202
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Book Description
Author: Sidney DeGarmo (James)
Publisher:
ISBN:
Category :
Languages : en
Pages : 202
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Book Description
Author: Kenneth L. Williams
Publisher:
ISBN:
Category : Aerosols
Languages : en
Pages : 28
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Book Description
The Bureau of Mines laboratory tested the response of a commercially available real-time aerosol monitor (GCA RAM-I) to various dusts. Monitor measurements were recorded, averaged, and compared with simultaneous gravimetric measurements of each test dust. Tests usually lasted several hours. The test dusts of various particle size distributions used included coal, limestone, and a commercially available test dust. For each particular dust, the monitor response was linear and correlated well with mass concentration over the range of about 0.5 to 10 mg/ma3 The monitor can estimate a 2.0-mg/m3 respirable coal dust concentration within as little as ± 6 pet with 95 pet confidence. The monitor must, however, be calibrated with the dust to be measured because the instrument response is affected by the type of dust particle. The average monitor response to a mass concentration of coal dust was approximately twice the average monitor response to the same mass concentration of limestone dust.
Author: American Conference of Governmental Industrial Hygienists
Publisher: CRC Press
ISBN: 1351369334
Category : Nature
Languages : en
Pages : 416
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Book Description
A copublication of the American Conference of Governmental Industrial Hygienists and Lewis Publishers, this series continues the former Annuals of the American Conference of Governmental Industrial Hygienists. This series is designed to present state-of-the-art information on research and practical applications of science in the field of occupational health. Bokos are normally the proceedings of an important symposium or conference sponsored by the ACGIH or other leading professional organization in, or allied with, the occupational health field. Content deals with subject of current interest. Books in the Industrial Hygiene Science Series should become valued additions to the international scientific literature. Published volumes in this series are: Microcomputer Applications in Occupational Health and Safety Ergonomic Interventions to Prevent Musculoskeletal Injuries in Industry Advances in Air Sampling.
Author:
Publisher: Springer
ISBN:
Category : Nature
Languages : en
Pages : 424
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Book Description
Papers from the ACGIH Symposium, held Feb. 16-18, 1987 at Pacific Grove, Calif., and organized by the ACGIH Air Sampling Procedures Committee.
Author: Kenneth L. Williams
Publisher:
ISBN:
Category : Aerosols
Languages : en
Pages : 20
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Book Description
Author: Matti Jantunen
Publisher: WHO Regional Office Europe
ISBN: 9789289013420
Category : Air
Languages : en
Pages : 168
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Book Description
Most people spend most of their time indoors, and the poor quality of the indoor environment is a strong determinant of a variety of health problems. The principal way of preventing adverse health effects is to eliminate exposure to hazardous factors. But first, standardized methods of assessing exposure are necessary to assess the risk to health and to select optimal risk management actions. This book aims to facilitate the implementation of exposure assessment methods in public health practice.
Author: Bruce Baird Hanna
Publisher:
ISBN:
Category : Aerosols
Languages : en
Pages : 168
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Book Description
Author: Beverly S. Cohen
Publisher: American Conference of Governmental Industrial Hygenists
ISBN:
Category : Science
Languages : en
Pages : 778
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Book Description
This is a comprehensive guide to the sampling of airborne contaminants. Addresses both occupational and environmental air sampling issues and presents measurement methods for both gaseous and particulate air contaminants. This guide also shows available air sampling instruments and provides information for their use.
Author: Chris Winder
Publisher: CRC Press
ISBN: 1482289288
Category : Medical
Languages : en
Pages : 624
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Book Description
Hazardous agents are an ongoing concern in the modern workplace, with many examples of workers being severely affected by chemicals as a result of both acute and chronic exposure. Occupational Toxicology, 2nd Edition introduces the basics of toxicology that underpin the application of toxicological information to the workplace environment.
Author: Nicola Masey
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Book Description
This research developed efficient applications of portable measurement systems to assess human exposure to traffic-related air pollution through direct measurement, and evaluation of exposure models.Passive NO2 samplers are deployed at large numbers of sites in epidemiological studies to estimate typical concentrations over 1-4 weeks. I found that deployment time could be reduced to 2 days with limited impact on the accuracy and precision of exposure estimates. This shorter measurement time enabled observation of wind-speed effects leading to overestimation of ambient concentrations by passive samplers. Through development of a post-processing technique and/or inclusion of a membrane I improved sampler accuracy. Portable sensors can provide detailed estimates of personal exposures to air pollution. Many sensor-based monitors have not been subject to rigorous testing procedures to quantify their accuracy. I observed that the most accurate estimates of concentrations from NO2 and O3 sensor-based monitors required regular, intermittent calibration against reference analysers under similar environmental conditions to field measurements. I also found deterioration in BC monitor accuracy and precison when the attenuation of the collection filter exceeded 40 and no improvement in monitor accuracy was observed when filter darkness correction algorithms were applied. Portable sensors can be used to identify locations with higher concentrations, which may require more detailed monitoring. I established that repeated 6-minute measurements of BC and particle number concentrations estimated similar spatial trends to 1-week NO2 measurements using passive samplers. Dispersion models can be used to estimate pollution exposure at multiple locations over a study area. I found that initial user parameterisation in a weather model had limited effect on pollution estimates from a dispersion model. I evaluated a new GIS-based dispersion model (5 x 5 m NO2 estimates for a 3,500 km2 area, with model run times of under 10 minutes). I demonstrated that inclusion of discrete street canyon models and geospatial surrogates (accounting for urban morphology) improved model accuracy. The measurement and modelling evaluation research in this thesis complimented each other by providing efficient ways to directly measure population exposures.
