dust monitoring Articles

  • Dust monitoring

    Generally, two different approaches are used to measure the amount of dust deposited on a surface; Determination of the soiling of a surface, by a change in its properties; Determination of the quantity of dust deposited, by weight. WHAT IS DUST? Dust is a generic term used to describe fine particles that are suspended in the atmosphere. Dust comes from a wide variety of sources, including soil, ...


    By Queensland Laboratory

  • Simultaneous determination of PM fractions, particle number and particle size distribution in high time resolution applying one and the same optical measurement technique

    Abstract The Fidas fine dust monitoring systems comprise an optical aerosol spectrometer, which is characterized by very good instrument characteristics, and utilize a sophisticated approach to convert the measured information on particle number and particle size into mass concentrations. As monitoring of PM requires reliable and quality-controlled performance of the measuring systems, ...


    By Palas GmbH

  • A Critical Evaluation of the South African Air Quality Offsets Guideline

    There is wide recognition in South Africa to the link between the quality of life and quality of the air we breathe. The Department of Environmental Affairs (DEA) attempts to improve air quality through two key regulatory tools; emission limits, which regulate the maximum concentration of certain pollutants permissible within certain, ‘listed’ industrial stacks or vents, and ambient ...


    By WKC Group

  • New laser-based dust emission monitoring system

    Abstract A new generation of continuous particulate matter concentration monitoring instruments is presented, covering a measuring range of 0 to 1000 mg/m3. The laser-based scattered light instrument gives an improved stability as well as excellent resolution in the low range. This enables high concentration measurement as well as especially low emission monitoring down to 0.01 mg/m3 with a ...


    By Sigrist-Photometer AG

  • The invisible fine dust

    Air is lifeblood. Daily we inhale approximately 15.000 liter. Still, the air contains invisible pollutants, which vary in its composition and concentration depending on the location. Especially the respirable particles with a diameter of less than 2.5 µm (PM 2.5) were considered to be particularly dangerous. According to a current study conducted by the Max Planck Society, ...

  • Reflectance spectroscopy as a tool for settled dust monitoring in office environment

    The aim of this study was to develop a technique based on reflectance spectroscopy that is capable of evaluating small amounts of sediment dust. Laboratory simulations and two field experiments conducted in the same office environment were carried out to generate particulate dust samples based on multivariate data analyses. Spectral measurements were taken using either a laboratory Quantum 1200 ...


    By Inderscience Publishers

  • Retrofit Intelligent Dust Extraction System

    Western Air Ducts Retrofits Intelligent LEV Solution at City of Oxford College The proffesionally equiped woodworking workshop at the Rycotewood Furniture Centre, at the City of Oxford College city centre campus, is a key resource for the many students of furniture design and ...


    By Inteliair Ltd

  • Monitoring surface water chemistry near magnesium chloride dust suppressant treated roads in Colorado

    Received for publication January 31, 2009. Magnesium chloride (MgCl2)-based dust suppression products are commonly used throughout western United States on nonpaved roads for dust suppression and road stabilization by federal, state, and county transportation agencies. The environmental implications of annually applying these products throughout spring and summer months on adjacent stream ...

  • Controlling Dust and Bioaerosols at a Biosolids Composting Faclity

    Studies at enclosed Longmont, Colorado project evaluate exposure level of employees. Operational changes reduce dust, endotoxin and A. Fumigatus by 90 percent. WHEN dealing with public health issues and composting, attention has been predominantly focused on potential exposure from the release of Aspergillus fumigatus (A. fumigatus) from composting facilities. Numerous studies were conducted to ...


  • Asbestos monitoring – what monitor should I be using?

    Asbestos is the name given to a group of minerals that occur naturally as masses of strong, flexible fibres that can be separated into thin threads and woven. These fibres are not affected by heat and do not conduct electricity. Asbestos is chemically, relatively stable. For these reasons, asbestos has been widely used in many industries.  These four types are classified as follows:  ...


    By Shawcity Limited

  • Exposure to dust, endotoxin and airborne microorganisms in wastewater sludge thermal drying units

    The objective of this study was to assess workers' exposure to bioaerosols in sludge drying units. Simultaneous collection of inhalable dust and airborne biological agents was carried out using rotating cup samplers (CIP 10, Arelco). Sixteen stationary and 30 personal measurements were performed in three drying plants, during summer and winter. Microbial content of air was characterized by high ...


    By IWA Publishing

  • What You Need to Know About Cyclone Dust Collectors

    Cyclone dust collectors are brilliant cleaning devices and once you have decided to use one, you must understand the job it does. A cyclone dust collector is different from other dust collectors, which is the first thing so you don’t get confused. Dust collectors remove dust particles as well as harmful pollutants flowing in the work environment. However, cyclone dust collectors are more ...


    By ProVent, LLC

  • Monitoring Environmental Quality

    ' In order to determine the effectiveness of actions to improve environmental quality it is necessary to be able to measure relevant environmental parameters at a level of detail which is accurate enough to distinguish the anticipated changes. However, the establishment and maintenance of monitoring systems is time-consuming and expensive and therefore the scale of such systems needs to be kept ...


    By The World Bank

  • Radiation Monitors and Meters

    Light Description and Applications The light meter is a portable unit designed to measure visible, UV, and near-UV light in the workplace. (The CTC has a UV light meter available through its loan program, ALEP.) The light meter is capable of reading any optical unit of energy or power level if the appropriate detector has been calibrated with the meter. The spectral range of the instrument is ...

  • Synergetic use of TERRA/MODIS imagery and meteorological data for studying aerosol dust events in Cyprus

    This paper presents the results from the analysis of TERRA/Moderate Resolution Imaging Spectrometer (MODIS) images for the detection and mapping of particulate air pollution in Cyprus. For this purpose, a set of selected air pollution events for the year 2002 was used, mainly associated with dust transported over the area from the surrounding deserts. The results depict the potential of the use ...


    By Inderscience Publishers

  • Casella BOUNDARY Guardian helps to control noise and dust on major London construction project

    Casella‘s BOUNDARY Guardian is helping to ensure noise compliance and control of air quality at BSkyB’s campus redevelopment site, bringing peace of mind to site operators, the client and the local community. The BOUNDARY Guardian is a system for web-based remote monitoring of noise and/or dust emissions that ensures compliance ...


    By Casella

  • ‘New for old’ dust analyser deal brings 96.66% data capture rates to NE Lincs

    With the UK’s largest port and the industrial town of Grimsby in its jurisdiction, air quality monitoring is a primary concern for North East Lincolnshire Borough Council. When DEFRA reported that the TEOM dust analysers the council relied on weren’t up to standard, rapid action was required and Enviro Technology (ET) stepped in with its BAM 1020s. North East Lincolnshire is the ...

  • Temporal behaviour of Asian dust aerosols observed in 2001 using meteorological satellite data

    The advection and dispersion of Asian dust events from China and Mongolia to the Pacific Ocean around Japan in the spring of 2001 were investigated using meteorological satellite data, NOAA/AVHRR and GMS-5/VISSR. Aerosol Vapour Index (AVI) images, taking the brightness temperature difference between 11 and 12 _m, are very effective in monitoring the Asian dust phenomenon in the east Asian region, ...


    By Inderscience Publishers

  • GM-Delphi: Whirl / Wet Combines High Efficiency Wet Dust Collection with Low Maintenance and Operating Costs

    Tri-Mer® dust collection technology has once again been selected by GM-Delphi. Four units were selected as replacements for dry collectors. Each unit serves four grinding (or shot blasting) stations. Capacities range from 425 to 52,500 cubic ft./minute. The units will accommodate very heavy loadings under continuous use, and allow regular maintenance without interrupting production. Equally ...


    By Tri-Mer Corporation

  • Air Pressure Monitoring for a Chemical Fume Hood

    CAS DataLoggers recently provided the pressure and temperature datalogging solution to a manufacturer using a chemical fume hood to protect workers by containing vapors, dusts, gases, and fumes, and then expelling them as air flowed into the hood from the front (open) side of the cabinet and then out via the ducted hood exhaust system. Designed for 2 operators, the fume hood had a Fiberglas ...


    By CAS DATALOGGERS

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