metal detection Articles

  • GPR goes underground: Pipe Penetrating Radar

    Abstract: Pipe Penetrating Radar (PPR) is the underground in-pipe application of ground penetrating radar (GPR) either robotically or by manned entry to reveal wall thickness, delamination, voids, and other conditions that enable more precise determination of pipeline integrity and verifications for trenchless technology rehabilitation. PPR, when applied to pipe-bursting applications, can ...


    By SewerVUE

  • Affinity–based biosensors for heavy metal detection

    In recent years, there has been a pressing need for fast and reliable methods for environmental monitoring. Among the various pollutants, the heavy metals are some of the most harmful because these substances are non–biodegradable and retained by the ecological system. Conventional analytical techniques for heavy metals imply high cost, trained personnel and the repute that they are mostly ...


    By Inderscience Publishers

  • Detectable Dissolved Metals REX Periodic Chat

    Detectable Metals with AMDS REX Analysis - Periodic Chart This chart provides a look at the levels of trace metals that AMDS's REX can detect with in a nominal 1 hour period.  It's legend lists the filters combinations and level of detection from ppm to ppb. Real-time detection allows immediate intervention on a time scale of 10-20 measurements per day: ...

  • Understanding Challenging Applications for Improved Metal Detection

    In the food industry, certain products can act like metal contaminants, a phenomenon known as ‘product effect.’ This is where the type of product being inspected can hinder the ability of inspection technology to correctly identify metal. At best this can lead to unacceptable false reject levels, at worst it can result in metal contaminated product leaving the production facility. ...


    By Mettler - Toledo Int. Inc

  • Integrated Geophysics: GPR and metal detection surveys at a retail facility

    PROJECT: GPR and EMI surveys at an active Safeway grocery store parking lot LOCATION: Rapid City, South Dakota PROJECT DESCRIPTION: Designed and performed a GPR survey in tandem with an EM-61 metal detection survey of a parking lot for a Safeway store in Rapid City, South Dakota. Surveys were designed to detect buried metallic and non-metallic drums and ...


    By ECA Geophysics

  • Radiation detection market is HOT

    The number of radiation incidents has increased over recent years; at the same time, the issue has been climbing up the scrap processing agenda, with sales of detection equipment scaling new heights. This article looks at latest trends in radiation detection and at the growing sophistication of the equipment designed to uncover radioactive sources in scrap metal and other material ...


    By Recycling International

  • Chromium detection in water and soil...

    What is chromium? Chromium is a metal that is widely distributed in the earth’s crust (soil and rocks), air and water. Naturally occurring chromium occurs mainly in the chromium (III) form as chromite ore, which contains oxygen, chromium (III) and other metals such as iron. Chromium (VI) compounds are produced commercially from chromite ore for a wide variety of uses. ...


    By Camlab Limited

  • Gas Detection and Monitoring Systems

    In greenhouse applications, the accurate measurement of a number of environmental parameters such as carbon dioxide concentration, temperature, light intensity, water, humidity, pH and nutrient levels using sophisticated sensors is used to create a controlled environment for optimising plant growth rates while minimising energy usage. Carbon dioxide concentration is also one of the best ...


    By Edinburgh Instruments Ltd

  • Heavy Metals Analysis

    Correct measurement results are a prerequisite for compliance with limit values, which are always specified as total metals. Heavy metals such as copper, nickel, zinc, etc. can be quickly and reliably determined in aqueous samples with the help of the LANGE cuvette tests. Matrix factors (e.g. interference ions, colour, turbidities, etc.) may have a negative impact on themeasurement and cause ...


  • Metallic nanoparticles: synthesis, characterisation and application

    Colloidal sphere-like gold nanoparticles were prepared from an HAuCl4 aqueous solution by the chemical reduction method and by using X-ray irradiation, while rod-like gold nanoparticles were synthesised according to the seed-mediated growth method and by sonoelectrochemistry. Gold nanoparticles exhibit fcc structure. Sphere-like gold nanoparticles have a ...


    By Inderscience Publishers

  • Plasmonic colorimetry: visual detection of environmentally relevant species

    Colorimetric detection of chemical species based on specially tailored noble metal nanoparticles is garnering increasing interest in the scientific community. The aggregation/dispersion of unmodified or ligand–functionalised plasmonic nanostructures upon binding to an environmental pollutant results in a colorimetric response, which can be easily discerned with the naked eye. This review ...


    By Inderscience Publishers

  • REDWAVE Metal Days 2015 - Review

    The REDWAVE Metal Days, at BT-Wolfgang Binder in Gleisdorf, pro­vided the context for international experts from various sectors of the metal and aluminium recycling in­dustry to exchange information on markets, technologies and practical experience. In addition, the new REDWAVE XRF-M sorting system, for recycling in the metals sector, was presented to the participants. ...

  • Fixed Versus Portable Gas Detection – Which Is Better?

    Did you know that workers are needlessly injured every year as a result of leaking toxic or combustible substances? Such incidents are known to involve a wide range of hazardous gases (including ammonia, carbon monoxide, chlorine, hydrogen sulfide, hydrocarbon vapors and so on). The sad reality is that most of these accidents are avoidable if only the workplace is adequately monitored. This leads ...

  • Listening In: Smartball Detects Ancient Buried Sounds

    For this leak detection survey, Pure’s innovative free-swimming acoustic tool gathered critical information about the aging pipeline assets of this historic Arabian city. This large public utility supplies bulk water to this bustling, historic resort city located in the Arabian Penninsula region. The city’s infrastructure – above ground and below – ...


    By Pure Technologies

  • Pt. 3 - IN the MIX - Construction Safety and Gas Detection

    In our last blog (part 2 of 4) we consulted the OSHA Construction eTOOL to determine the factors that require a Gas Monitor. In this Blog (part 3 of 4) we explore Certified AIR ...


  • Developing Technologies to Detect Hydrogen Sulfide (H2S) Gas

    Abstract Hydrogen sulfi de (H2S) gas can cause nausea, headaches, unconsciousness, and death. Industries struggle to detect this deadly substance before it harms workers or communities. Safety system manufacturers have developed detectors that sense the H2S quickly and accurately. This paper illustrates, in general terms, considerations in effective placement of H2S detectors: ...

  • Validation of SPE-TOXcontrol for the determination of metals in drinking water

    Supervisors: Ramón López & Susana González Blanco; CETaqua; Dr. C.A.M. Broers, microLAN B.V. The potential of SPE-TOXcontrol as a new early warning system to detect possible hazards in drinking water was assessed. The work was done in the framework of the WATMATIN project funded by the Spanish Ministry of Science and Innovation…. The evaluation of SPE-TOXcontrol ...

  • Accumulation of heavy metals in the bottom sediments of the Irkutsk Reservoir

    The chemical composition of the bottom sediment, and more particularly the heavy metals content, reflects human developments and impacts on the catchment and reservoir's natural environment. The bottom sediments of the reservoir retained by the Irkutsk Dam have been analysed. The reservoir is mainly supplied by water from Lake Baikal. The following amounts of heavy metals have been found in the ...


    By Inderscience Publishers

  • Dyed viruses and metal particles for advanced separation studies

    Single nanometer sized particles are poorly retained by conventional water treatment methods and are hardly detectable in water samples. The particles present a separate class of pollutants and their transport and fate cannot be studied by tracking bacteria, turbidity, free dyes or ions. Dyed bacteriophages and gold nanoparticles are two novel tools that facilitate the studies of virus ...


    By IWA Publishing

  • Detecting Arsenic in Soil using Field Portable X-Ray Fluorescence

    Abstract Rapid, accurate on site determination of arsenic and heavy metal levels in soil is a powerful tool in efforts to rebuild and revitalize abandoned and under-utilized industrial properties. The EPA is actively spearheading initiatives to encourage assessment, clean-up and re-use of these industrial properties. In the case of heavy metals (often the eight RCRA metals Pb, As, Cd, ...

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