Fine Particles Articles

  • Automated Oil Particle Analysis Helps Prevent Gearbox Failures

    The major issue for premature failure in wind turbine gearboxes is bearing failure, which leads to gearbox failure. A wind turbine gearbox will not survive if the oil is not clean and especially if the hard ferrous particles are not removed from ...


    By Spectro Scientific

  • Automating oil particle analysis

    Run up to 25 samples at one time The major issue for premature failure in wind turbine gearboxes is bearing failure, which leads to gearbox failure. A wind turbine gearbox will not survive if the oil is ...


    By Spectro Scientific

  • 55 years of haze: How plane bound for KL overflew to Singapore when it was all hazy on Oct 19, 1961

    Good weather may have kept the haze away from Singapore for now, but it is unlikely that the seasonal plague is gone for good. Plumes of smoke haze have clouded Singapore’s skies almost every year from as far back as the 1960s, with the first haze episode reported on Oct 19, 1961. We look back at 55 years of haze history: 1. When it all started A heavy haze ...


    By Camfil Ltd

  • Characteristics of phosphorus sorption at the sediment–water interface in Dongting Lake, a Yangtze-connected lake

    Phosphorus in sediments plays an important role in lake eutrophication. This study investigated the phosphorus sorption characteristics of sediments in a river-connected lake and identified the phosphorus source or sink areas in the lake. Sediment samples with different physicochemical characteristics were collected in 2011 and 2013 from Dongting Lake, which is connected to the world's third ...


    By IWA Publishing

  • Study of mineral aerosols in fine (PM 2.5 ) and coarse (PM 10 ) atmospheric particles over a world heritage site at Agra, India

    PM 2.5 and PM 10 samples were collected at different sites from Agra to see their monthly and seasonal trends along with associated mineral aerosols. Annual mean mass concentrations of PM 2.5 and PM 10 over Agra were 104.25 and 261.89 µg/m 3 respectively. The monthly average varied from 26.94 to 211.56 µg/m 3 and 126.05 to 474.31 µg/m ...


    By Inderscience Publishers

  • Traffic emission effects on ambient air pollution by PM2.5–related PAH in Upper Silesia, Poland

    The ambient concentration of particle–bound polycyclic aromatic hydrocarbons (PAHs) was investigated in two industrial towns in Upper Silesia, Poland. The 24 h samples of PM2.5 (particles with aerodynamic diameter ≤ 2.5 µm) were collected simultaneously at busy roads (or crossroads) and at an urban background site. Additionally, the samples were collected during the heaviest traffic density (rush ...


    By Inderscience Publishers

  • Phosphate Mine Tailings - Case Study

    THE CHALLENGE A typical phosphate mining operation can produce between 180,000 and 225,000 gallons per minute of fine phosphatic clay tailings. This material has a solids concentration of between 2% and 7% on a dry-solids basis. Currently, ponds and lagoons are used for settling and clarification of these materials. Many of these polishing ponds are approximately 200 to 300 acres in size, ...

  • Bioaccesible heavy metals‐sediment particles from Reconquista River induce lung inflammation in mice

    The Reconquista River (RR), one of the most polluted watercourses in Argentina, receives effluent discharges from heavily industrialized and highly populated settlements. During winter and summer, the floodplain remains dry, producing the oxidation of sulfide and organic matter present in the sediment, making heavy metals more bio‐accessible. Dispersion of this sediment occurs, and thus harmful ...


    By John Wiley & Sons, Ltd.

  • Accumulation and distribution characteristics of platinum group elements in roadside dusts in Beijing, China

    The concentrations, distribution, and accumulation of platinum group elements (PGEs) were investigated in roadside dusts collected in four different foundational areas in Beijing during February to May 2010. The results showed that PGE levels in all samples were above the average upper crust values, with mean concentrations of 57.5 ng · g−1 Pd, 28.2 ng · g−1 Pt, and 9.8 ng · g−1 Rh, respectively. ...


    By John Wiley & Sons, Ltd.

  • Office Printers Emit Ultra fine particle pollution

    We’ve heard quite a bit about particulate matter PM10s and PM2.5s as components of air pollution that we are exposed to on a daily basis. Recent research papers are highlighting the dangers of ultra fine particles (UFPs), which have a diameter of less than 0.1 micrometres (or 100 nanometres). By contrast, the diameters of particulate pollution from PM10s and ...


    By Commercial Air Filtration

  • Hielscher Ultrasonics: Sonocatalysis

    In many chemical manufacturing processes catalysis is involved to increase the reaction rate. The use of ultrasound is a potential way to speed up the chemical catalysis. During the sonication of liquids, the accoustic wavelength range between approx. 110 and 0.15 mm for frequencies of 18kHz and 10Mhz. This is significantly higher than those of molecular dimensions, resulting in that there is ...

  • Detection of pentachlorophenol in wood

    MATRIX: Wood, reduced to fine shavings or sawdust ANALYTE: Pentachlorophenol (PCP) RANGE OF DETECTION: 1 to 100 ppm MATERIALS: Pentachlorophenol RaPID AssayÒ Kit and Sample Diluent Reagents: acetonitrile (pesticide grade). Equipment: reciprocating shaker, plastic bottles (polypropylene or high density ...


  • Overview of Airborne metals regulations, exposure limits, health effects, and contemporary research case study

    One of the consequences of the current state of industrialization and an increasing demand for modern conveniences and improved quality of life has been an increased exposure to air pollutants from industrial activities, traffic, and energy production. Regulatory bodies, such as federal, state, and local environmental protection agencies, are responsible for assuring the public that the air is ...


    By Cooper Environmental

  • Geochemical behaviour of the aerosol sampled in a suburban zone of Sfax City (Tunisia)

    This work examines the geochemistry of the soluble elements (Ca2+, Mg2+, Fe2+ + Fe3+, Na+, K+, NH4+, Cl−, NO3−, SO42− and PO43−) present in the aerosol collected from a suburban site in Sfax City (Tunisia), which is frequently subjected to the urban plume. The descriptive study showed the influence of enrichment sources and meteorological factors. Complementary statistical approaches based on ...


    By Inderscience Publishers

  • Atmospheric lead concentrations near roadways in a suburban part of Istanbul

    In this study, daily aerosol samples of fine (PM2.5) and coarse (PM2.5−10) particles were collected at Buyukcekmece (41°2′35″N, 28°35′25″E), a sub-urban part of Istanbul, Turkey. Sampling area is under the impact of two main transport arteries, namely the Trans European Motorway (TEM) and E5 motorways. Atmospheric lead levels measured in this study were compared with those reported previously ...


    By Inderscience Publishers

  • Atmospheric aerosols behaviour at an industrial area in Northern France

    Aerosols samplings by bulk filtration and by use of a high volume cascade impactor were performed taking into account wind directions simultaneously at an urban and a rural site in Northern France. Fifteen major and trace species were considered to study characteristics of the particles collected. Evolution of the Weighted Mean Diameter vs. the wind direction, profiles of the Mass Size Function ...


    By Inderscience Publishers

  • Urgent CAIR needed

    On July 11, 2008, the US Court of Appeals for the District of Columbia Circuit vacated (overturned) the US Clean Air Interstate Rule (CAIR). Adopted in 2005, CAIR was a centerpiece of the US Environmental Protection Agency’s (EPA) strategy to reduce multiple pollutants from major stationary sources. CAIR was expected to reduce power plant emissions in 28 eastern states and the District of ...

  • Effect of prenatal exposure to fine particles and postnatal indoor air quality on the occurrence of respiratory symptoms in the first two years of life

    The purpose of this study was to assess an impact of prenatal exposure to fine particles (PM2.5) on the risk of developing respiratory symptoms in early childhood. The study was carried out in a cohort of 465 newborns in Krakow (Poland) who have been followed over the first two years of life. The children exposed to medium level of PM2.5 (>35.3?53.4 µg/m³) had 13% more wheezing days (IRR = 1.13; ...


    By Inderscience Publishers

  • Fine China

    A daily commute in West Michigan might take someone to Grand Rapids or Kalamazoo. But this January, Jeannie Jansma of Sebright Products in Hopkins headed to work on the other side of the world. As Sebright’s marketing director, Jansma spent 10 days in China meeting with her Asian counterparts in the pulp and paper industry to look for new technology and to learn what the United States needs to ...


    By Sebright Products, Inc.

  • Mining Related Sediment Impacts: Causes, Significance and Solutions1

    The ProblemAs with many production activities related to the use of natural resources, initial legacies in the form of negative impactsare often characterized by acute pollution of surface waters. In the case of the mining industry, long after the originalmining-related activity ceases, residues such as tailings, spoil piles, sediments in settling ponds or sediments reaching natural ...


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