Download or read book Development and Application of Novel Portable Personal Aerosol Samplers for Partitioned Sampling of Aerosolised Semi volatile Organic Compounds in Workplace Environments written by Vesta Kohlmeier and published by . This book was released on 2019* with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The main goal of this PhD thesis was to enable simultaneous but separate sampling of semi-volatile organic compound (SVOC) aerosol gas and particle phases. This should be realised by incorporation of denuders in the currently in Germany available personal aerosol samplers. For this reason, two denuder types were first experimentally characterised in terms of gas-particle partitioning. On the basis of the obtained findings, an improved personal aerosol sampler was produced, characterised and tested in laboratory and field studies.eng
Download or read book Aerosol Sampling written by James H. Vincent and published by John Wiley & Sons. This book was released on 2007-04-04 with total page 636 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive account of the important field of aerosol sampling as it is applied to the measurement of aerosols that are ubiquitous in occupational and living environments, both indoor and outdoor. It is written in four parts: Part A contains 9 chapters that describe the current knowledge of the physical science that underpins the process of aerosol sampling. Part B contains 4 chapters, which present the basis of standards for aerosols, including the link with human exposure by inhalation. Part C contains 7 chapters that cover the development of practical aerosol sampling instrumentation, and how technical designs and methods have evolved over the years in order that aerosol sampling may be carried out in a manner matching the health-related and other criteria that have been proposed as parts of standards. Finally Part D contains 6 chapters that describe how a wide range of aerosol sampling instruments have performed when they have been applied in the field in both occupational and ambient atmospheric environments, including how different instruments, nominally intended to measure the same aerosol fraction, compare when used side-by-side in the real world. The book draws together all that is known about aerosol sampling, for the benefit of researchers and practitioners in occupational and environmental health and all other fields of science and engineering where aerosols are of interest.
Download or read book Development and Application of a Flow through Sampler for Semi volatile Organic Compounds in Air written by and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: PhD.
Download or read book Development and Application of a Flow Through Sampler for Semi Volatile Organic Compounds in Air written by Hang Xiao and published by . This book was released on 2008 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The investigation of the atmospheric fate and transport of semi-volatile organic compounds (SOCs) often requires the sampling of large volumes of air (>100 m3) in a relatively short period of time. Conventionally high-volume pumps are not suitable for remote areas without access to reliable network power. We have developed a flow through sampler for such situations. It consists of a horizontally-oriented flow-tube, that can collect gaseous and particle-bound SOCs from large volumes of air by turning into the wind and having the wind blow through a porous sampling medium such as polyurethane foam. Through both indoor and outdoor experiments, we quantified its air sampling rate (through battery operated anemometers inside and outside of the flow tube), its sampling efficiency (by theoretical plate number analysis of the break-though curves for PCBs, PAHs, OCPs and PBDEs), and its accuracy (by comparison of concentrations, time trends, temperature dependences and isomer ratios with those obtained by conventional high-volume sampling) under conditions of constant and variable meteorological conditions (wind speed, temperature). The flow-through sampler was deployed to monitor SOC concentrations at a remote Chinese research station located close to Nam Co Lake, Tibet. During the campaign, fifteen 1 month-long samples were taken, corresponding to sample volumes between 5,000 and 20,000 m3. Despite those large sample volumes, only HCB and HCHs experienced break-through, but application of frontal chromatograph theory allows the estimation of breakthrough-corrected air concentrations even for those relatively volatile SOCs. The pesticide levels at Nam Co are generally very low. Most pesticides had higher levels during summer, resulting in a strong temperature dependence. This is correlated with air mass origin across the Himalayas in the Gangetic plains of India and Bangladesh. The flow through sampler constitutes a feasible method for reliably and quantitatively collecting SOCs from large air volumes.
Download or read book Testing and Characterizing a Novel Sampling Method for Aerosols written by and published by . This book was released on 2015 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aim of this research was to develop a novel sampling method to collect volatile and semi-volatile organic compounds, and particle matter, in aerosol samples. Aerosols have both biogenic and anthropogenic sources. Primary organic aerosols (POA) are directly emitted, while secondary organic aerosols (SOAs) are formed by reaction of gas-phase compounds in the atmosphere. The sampling method developed in this research will enable the collection of a complete range of compounds, with the ultimate goal of allowing regulatory agencies and scientists to improve the development and testing of computer models that predict the roles of aerosols in atmospheric and health sciences.
Download or read book The Application of Aerosol Sampling Science Towards the Development of New Generations of Practical Sampling Instruments written by Samuel Y. Paik and published by . This book was released on 2002 with total page 506 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Validation of Sampling Methods for Semi volatile Organic Compound Aerosols in Work Areas written by and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Development of a Rapid Testing Method for Personal Aerosol Samplers written by Laurie A. Brixey and published by . This book was released on 2003 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development and Testing of Sampling Methods for the Determination of Selected Semi Volatile Organic Components Distributed in Aerosols Between Gas and Particle Phase written by Dariusz Antkowiak and published by . This book was released on 2006 with total page 125 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Aerosol Sampling written by James H. Vincent and published by Wiley. This book was released on 1989-05-23 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt: Deals with aerosol sampling as an applied scientific subject, linking it to the needs of practical sampling in the real world. Provides the scientific framework necessary to appreciate the processes relevant to aerosol sampling. Discusses experimental methods that have been employed in aerosol sampler studies and identifies parameters by which sampler performance can be evaluated. Also considers sampling in relation to health effects, and how practical sampling methodology has evolved to match such criteria.
Download or read book Characteristics and Sampling Efficiencies of Two Personal Aerosol Samplers written by and published by . This book was released on 2007 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt: Characteristics and aerosol sampling efficiencies of two units of the same model Personal Aerosol Sampler (PAS-1 and PAS-2) were characterized at ECBC. These samplers were designed and manufactured by Research Center for Toxicology and Hygienic Regulation of Biopreparations at the Federal Directorate of Medical, Biological and Extreme Problems "Medbioextrem", Ministry of Health of the Russian Federation, Russia. These samplers have non-traditional wetted wall cyclones to collect and concentrate aerosols into liquid. The samplers are small, portable, and easy to use for decontamination. The sampling efficiency tests were conducted with monodisperse 0.5-, 1-, and 2.1-micrometre fluorescent Polystyrene Latex (PSL) microspheres, and 5.8- and 9.6-micrometre fluorescent oleic acid particles. The air flow rate of PAS-1 was 10 Lpm and the air flow rate of PAS-2 was 9 Lpm. The sample output volumes for PAS-1 and PAS-2 were 1.9 + or - 0.5 cu cm and 2.0 + or - 0.5 cu cm, respectively. The results of PAS-1 and PAS-2 showed the highest sampling efficiency of 72.6% + or - 6.8 and 77.6% for 5.8-micrometre particles, respectively. The power requirements of these samplers will depend on the vacuum pumps used to pull the air through the samplers.
Download or read book Aerosol Sampling and Analysis written by Jean Graf and published by . This book was released on 1977 with total page 135 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development and Application of Complementary Hydrometeor and Interstitial Aerosol Samplers written by Alfons Schwarzenböck and published by . This book was released on 1999 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bioaerosols written by Janet Macher and published by American Conference of Governmental Industrial Hygenists. This book was released on 1999 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt: Expanding far beyond its predecessor, this text offers a comprehensive guide to the assessment and control of bioaerosols in the full range of contemporary workplaces. Although the indoor environment remains a focus of concern, much of the information in this publication has application beyond office environments. The prominence of saprophytic microorganisms remains; however, more attention has been given to other important biological agents (e.g., arthropod and animal allergens, infectious agents, and microbial volatile organic compounds). In addition, fuller descriptions are provided for microbial toxins and cell wall components that may cause health effects
Download or read book Passive Air Samplers for Semivolatile Organic Compounds written by Xianming Zhang and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bioaerosols Handbook written by Christopher S. Cox and published by CRC Press. This book was released on 2020-11-25 with total page 656 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive handbook provides up-to-date knowledge and practical advice from established authorities in aerosol science. It covers the principles and practices of bioaerosol sampling, descriptions and comparisons of bioaerosol samplers, calibration methods, and assay techniques, with an emphasis on practicalities, such as which sampler to use and where it should be placed. The text also offers critiques concerning handling the samples to provide representative and meaningful assays for their viability, infectivity, and allergenicity. A wide range of microbes-viz., viruses, bacteria, fungi and pollens, and their fragments-are considered from such perspectives. Bioaerosols Handbook is divided into four parts, providing a wide-ranging reference work, as well as a practical guide on how best to sample and assay bioaerosols using current technology.
Download or read book High Flow Air Sampler for Rapid Analysis of Volatile and Semi volatile Organic Compounds written by Xiaofeng Xie and published by . This book was released on 2015 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: An equilibrium distribution sampling system was developed by absorbing selected analytes in granular PDMS to provide calibration for on-site instrumentation. Furthermore, a needle trap device was coupled in tandem to both high flow rate air samplers to perform second-stage concentration of VOCs down to the ppt level. Concentration factors of 104 to 105 were achieved within 30 min using both systems, i.e., over 10 to 100 times more sample was collected compared to conventional TD systems.
