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 Characteristics and Sampling Efficiencies of Two BioGuardian Registered 12 03 Aerosol Samplers written by and published by . This book was released on 2005 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sampler characteristics and sampling efficiency measurements of two BioGuardian(Registered) 12.03 (BG12.03) air samplers were determined in this study. The BG12.03 has 12 cyclones and is designed for an airflow rate of 1000 L/min. The sampling efficiency tests were conducted using 1-, 2-, and 3-micrometer fluorescent polystyrene latex (PSL) microspheres, and 4.5-, 5-, and 8.5-micrometer sodium fluorescein tagged oleic acid (fluorescent oleic acid) particles. The samples were analyzed by fluorometry. The sampling efficiency results show peak efficiencies of 65.6% and 63.8% for BG12.03-1 with 2- and 3-micrometer particles, respectively, and sampling efficiencies of 52.4% and 56.1% for BG12.03-2 for 2- and 3-micrometer particles, respectively, compared to reference filter samples. Tests were also conducted to determine the effect of the preseparator on sampling efficiency by removing the preseparator and conducting the sampling efficiency tests. Results show that removing the preseparator increased the sampling efficiency of 5- and 8.5-micrometer particles. The power usage of the BioGuardian(Registered) is 378 W.
Download or read book Characteristics and Sampling Efficiencies of Aerosol Samplers Rotating Arm Sampler BiocaptureTM Sampler and MicrovicTM Aerosol Concentrator written by and published by . This book was released on 2002 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Characteristics and sampling efficiencies of three aerosol samplers were determined. They are Rotating Arm Sampler (RAS), BioCapture(Trademark) Sampler, and Microvic(Trademark) Aerosol Concentrator. The RAS was made at the U.S. Army Edgewood Chemical Biological Center, and the BioCapture(Trademark) and the Microvic(Trademark) aerosol concentrator were made by MesoSystems Technology, Inc. (Richland, WA). The RAS samples the aerosol on filters. The BioCapture(Trademark) collects the particles on a wetted rotating surface, and the Microvic(Trademark) concentrates the particles from an air flow rate of 30 L/min to 3 L/min. A filter is attached to the Microvic(Trademark) Aerosol Concentrator to collect the particles. Monodisperse fluorescent oleic acid particles and monodisperse fluorescent polystyrene latex particles were used in these tests. Fluorometry was the analysis method. The results showed that the sampling efficiency of the RAS is between 80 - 95% for 2 - 13 micrometers particles. The sampling efficiency of the BioCapture(Trademark) is
Download or read book Characteristics and Sampling Efficiencies of Aerosol Samplers Manufactured by Mesosystem Technology Inc written by and published by . This book was released on 2003 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Characteristics and sampling efficiencies of five aerosol samplers designed and built by MesoSyetem Technology, Incorporated (Kennewick, WA) were determined. The samplers tested were three BioCapture(TM) (BT-550) samplers, one MicroVIC(TM) concentrator connected to a filter (MV-F), and one MicroVIC(TM) concentrator connected to an SKC BioSampler (MV-SKC). Monodisperse fluorescent oleic acid particles and monodisperse fluorescent polystyrene latex particles were used in the tests. The analysis was by fluorometry. The results showed that all samplers had a peak sampling efficiency for 2-micrometers particles. The average peak sampling efficiencies of the samplers BT-550, MV-F, and MV-SKC were 38%, 63%, and 27%, respectively.
Download or read book Characteristics and Sampling Efficiencies of SpinCon and Pre Production Omni Model Aerosol Samplers written by and published by . This book was released on 2006 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt: Characteristics and aerosol sampling efficiencies of one SpinCon and two pre-production (PP) Omni model aerosol samplers Omni-2 and Omni-3) (Sceptor Industries, Inc., Kansas, MO) were determined at the U.S. Army Edgewood Chemical Biological Center. All three samplers have non-traditional wetted-wall cyclones to collect and concentrate aerosols in liquid. The Omni aerosol sampler is designed to be approximately half the weight, half the size, and a quarter of the power of the SpinCon. The sampling efficiency tests were conducted with monodisperses 1- and 3-um fluorescent polystyrene latex (PSL) microspheres and 3.5- and 5-um fluorescent oleic acid particles.
Download or read book Theoretical Investigation of Inlet Characteristics for Personal Aerosol Samplers written by Narayanan Rajendran and published by . This book was released on 1981 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Characteristics and Sampling Efficiencies of OMNI 3000 Aerosol Samplers written by and published by . This book was released on 2006 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: Characteristics and aerosol sampling efficiencies of four Omni 3000 aerosol samplers (Sceptor Industries, Inc., Kansas, MO) were determined at ECBC. These samplers have nontraditional wetted-wall cyclones to collect and concentrate aerosols into liquid. The sampling efficiency tests were conducted with monodisperse 0.5-, 1-, 3-, and 5-mum fluorescent polystyrene latex (PSL) microsperes and 2.9-, 5.8-, and 8-mum fluorescent oleic acid particles. The results showed the highest sampling efficiency of 91% for 3-mum particles using the fluorescent PSL microspheres and 70% for 2.9-mum liquid fluorescent oleic acid particles. Omni aerosol samplers have approximately 277 L/min of air flowrate, use 83 W of power, depending on the attachments, and they are small in size. They give approximately 11 mL of liquid after each sampling. These samplers are portable, battery operated, and easy to use and decontaminate.
Download or read book Radioactive Aerosols written by Constantin Papastefanou and published by Elsevier. This book was released on 2011-07-28 with total page 187 pages. Available in PDF, EPUB and Kindle. Book excerpt: Whenever radioactivity is released to the atmosphere, for example by the detonation of nuclear weapons or the testing of nuclear weapons or from nuclear reactor accidents that fraction of it which remains airborne for more than a few hours is liable to be attached to aerosol particles. The resulting radioactive aerosols are carried by atmospheric mixing processes until they settle out or are scavenged by precipitation. The radiation exposure pathway of maximum concern to humans is by inhalation of aerosols and their deposition in the respiratory tract. In this context, it is important to note that radioactive aerosols are commonly of natural origin alos. In particular, the associated radionuclides can be of natural terrestrial origin, such as the decay products of radon gas, or they can e cosmogenic, such as beryllium-7. The exposure of miners of uranium and other ores and minerals to radon and its aerosol-borne decay products is of major significance. The book describes the formation of aerosols, their aerodynamic size distribution, their atmospheric residence time, their sampling and measurement, the range of radioactive aerosols found and studied thus far, including man-made nuclides and radon decay products and their interaction with man, including deposition in the lung and subsequent health effects. - Advanced level science handbook for researchers, scientists and academics - Covers all aspects of radiation exposure in humans, including subsequent health implications - Presents the latest findings and analysis in this highly topical area
Download or read book Bioaerosols Handbook written by Christopher S. Cox and published by CRC Press. This book was released on 2020-11-26 with total page 644 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 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 Theoretical Investigation of Inlet Characteristics for Personal Aerosol Samplers written by Narayanan Rajendran and published by . This book was released on 1981 with total page 140 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 Sampling Efficiency Measurement Methods for Aerosol Samplers written by and published by . This book was released on 2005 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aerosol samplers and concentrators are characterized at the U.S. Army Edgewood Chemical Biological Center. The characterization methods are summarized and include (1) monodisperse fluorescent/nonfluorescent Polystyrene Latex (PSL) microspheres with fluorometric analysis or Coulter Multisizer Analysis; (2) polydisperse solid aluminum oxide particles with Aerodynamic Particle Sizer (APS) analysis or Coulter Multisizer Analysis; (3) liquid fluorescent oleic acid particles with fluorometric analysis; and (4) bioparticles with Coulter Multisizer, culturing, enzyme linked immunosorbent assays (ELISA), polymerase chain reaction (PCR), and APS analyses. Samples are sent out for ELISA and PCR analysis. Aerosols are generated using several methods. The PSL microsphere aerosols are generated using a Collison nebulizer, sonic nozzle, Ink Jet Aerosol Generator (IJAG), and puffers. Aluminum oxide particle aerosols are generated using a sonic nozzle. Fluorescent oleic acid particle aerosols are generated using a Vibrating Orifice Aerosol Generator (VOAG). Bioparticle aerosols are generated using puffers (metered dose inhaler devices), nebulizers, IJAG, and sonic nozzle.
Download or read book Theoretical Investigation of Inlet Characteristics for Personal Aerosol Samplers written by Narayanan Rajendran and published by . This book was released on 1980 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Aerosol Technology written by William C. Hinds and published by John Wiley & Sons. This book was released on 2012-12-06 with total page 411 pages. Available in PDF, EPUB and Kindle. Book excerpt: The #1 guide to aerosol science and technology -now better than ever Since 1982, Aerosol Technology has been the text of choice among students and professionals who need to acquire a thorough working knowledge of modern aerosol theory and applications. Now revised to reflect the considerable advances that have been made over the past seventeen years across a broad spectrum of aerosol-related application areas - from occupational hygiene and biomedical technology to microelectronics and pollution control -this new edition includes: * A chapter on bioaerosols * New sections on resuspension, transport losses, respiratory deposition models, and fractal characterization of particles * Expanded coverage of atmospheric aerosols, including background aerosols and urban aerosols * A section on the impact of aerosols on global warming and ozone depletion. Aerosol Technology, Second Edition also features dozens of new, fully worked examples drawn from a wide range of industrial and research settings, plus new chapter-end practice problems to help readers master the material quickly.
Download or read book Characteristics and Sampling Efficiency of PHTLAAS TM Air Sampler written by and published by . This book was released on 2002 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study was conducted to characterize three configurations of Portable High-Throughput Liquid-Absorption Air Sampler (PHTLAAS)(TM) (Zaromb Research Corporation, Hinsdale, IL). This is a light-weight, high-volume sampler that has a wetted wall cyclone as the aerosol collector. Three configurations of the PHTLAAS(TM) were tested: (1) the cyclone with a slit opening off axis to the center of the cyclone without liquid recirculation, (2) the cyclone with a circular inlet opening off axis to the cyclone without liquid recirculation, and (3) the cyclone with a slit opening off axis to the center of the cyclone with a liquid recirculation to wet the cyclone walls continuously. The sampling efficiency of the PHTLAAS(TM) was determined by fluorometer analysis of sampled monodisperse fluorescent polystyrene latex microspheres and sodium fluorescein tagged oleic acid particles. Results show the collection efficiency is relatively high (greater than 62% for 1-10 micrometer particles with a peak of 84% for 4 micrometer particles). The power consumption of the Configuration 3 sampler is 85.3 watts during sampling.
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:
