trace water analyzer Articles

  • A Trace of Arsenic

    The cans of baby formula invaded Brian Jackson’s Dartmouth College lab late in 2010. His team picked up an armful of popular brands at the food co-op in Hanover, N.H. Then another armload. Eventually Jackson had a cabinet full of the brightly labeled canisters. Today, he still keeps a few in his office. Not as clutter — that’s not his style. He just likes to keep his toxicology ...


    By Freytech Inc.

  • Analyzing for Trace CO and CO2 using a Total Hydrocarbon Analyzer

    Untitled Document The purity of Specialty Gases is determined by the measurement of various contaminants including Total Hydrocarbons. Low level measurements of carbon ...


    By MOCON, Inc. - Baseline

  • Analyze Trace Amounts of Solvents in Water Using Packed Column GC

    Glass or stainless steel columns containing 80/120 Carbopack B/3% SP-1500 packing can be used to analyze water-based samples for ppm to low percentage levels of many organic compounds. This bulletin describes minimum detection limits and maximum capacity of these columns, adsorption and memory effects, and other factors that affect component quantitation. Problems are defined that might arise ...


    By Sigma-Aldrich Co., LLC

  • Tracing fine sediment sources in small mountain catchment

    Fine sediment represents an important diffuse source pollutant in surface waters, due to its role in governing the transfer and fate of many substances, including nutrients, heavy metals, pesticides and other organic contaminants, and its influence on aquatic ecology. Therefore, catchment management strategies frequently need to include provision for the control of sediment mobilization and ...


    By IWA Publishing

  • A marked improvement in the reliability of the measurement of trace moisture in gases

    Introduction Water is an important substance without which mankind cannot survive. However, it also causes problems such as residual impurity in scientific experiments and in manufacturing processes where a high-vacuum condition or a high-purity gas is required. This is because water is present in the atmosphere in large quantities and therefore can intrude readily everywhere, and can adsorb ...

  • Ultra-trace arsenic speciation at Columbia Analytical

    Ultra-trace speciation of arsenic and other metals is performed using a variety of techniques tailored to the specific combination of species, matrix, and detection limits required. Currently, two analytical systems are applied: Ion Chromatography-Inductively Coupled Mass Spectrometry (IC-ICP-MS) and Hydride Generation-Cryogenic Gas Chromatography-Flame Atomic Absorption Spectrometry ...


  • Measurement of Trace metals in Ambient air case study

    Trace metals are found at low concentration in the ambient environment and are associated with adverse health effects. The gold standard metal measurement is Inductively Coupled Plasma Atomic Emission Spectroscopy (ICP-AES); however, sample preparation is laborious and expensive. The Xact 625 metals monitor uses non-destructive X-ray fluorescence technology. A built-in sample collection system ...


    By Cooper Environmental

  • Assessment of Trace‐Element Impacts on Agricultural Use of Water from the Dan River following the Eden Coal Ash Release

    Catastrophic events require rapid, scientifically sound decision‐making to mitigate impacts on human welfareandthe environment. The objective of this study was to analyze potential impacts of coal‐ash‐derived trace elements on agriculture following a 35,000‐tonne release of coal ash into the Dan River at the Duke Energy Steam Station in Eden, NC. We performed scenario calculations to assess ...


    By John Wiley & Sons, Ltd.

  • Organochlorine and trace metal contaminants in the food web of the light-footed clapper rail, Upper Newport Bay, California

    Untitled Document EXECUTIVE SUMMARY Upper Newport Bay (UNB) is an ecological reserve of the California Department of Fish and Game and serves as refuge, ...

  • Texas Instruments - A Novel Separation Technique for the Analysis of Trace Levels of Atmospheric Contaminants in Inert Semiconductor Process Gases

    A NOVEL SEPARATION TECHNIQUE FOR THE ANALYSIS OF TRACELEVELS OF ATMOSPHERIC CONTAMINANTS IN INERTSEMICONDUCTOR PROCESS GASES J. Scott McWilliams, Alan Johnson, Charlene Long, Jeremiah D. Hogan*Texas Instruments, Inc.Dallas, TX 75265 Low ppb detection limits for contamination in cylinder gases have been achieved with gas chromatography using a modified gas ...


    By Environics, Inc.

  • Hydrogen Chloride Analyzer (HCl, H2O)

    LGR's Hydrogen Chloride Analyzer (HCl, H2O) provides sensitive measurements of HCl in ambient air or in industrial process flows (e.g., coal and cement exhaust streams) with extremely high precision and sensitivity. No longer do you have to spend a lot of money or wait a long time to measure HCl with extremely high sensitivity – LGR's HCl Analyzer provides measurements every second with ...

  • Reducing the Detection Limits for a Process Moisture Analyzer

    KEYWORDS Moisture Analyzer, Piezoelectric Sensor, Smart Transmitter, Internal Verification, Quartz-Crystal Microbalance ABSTRACT Piezoelectric moisture analyzers have been used in the process industry for over two decades. While this is an older technology for measuring moisture in gas phase samples, it is still one of the most reliable in ...

  • FTIR resolution requirements for industrial gas analyzers

    FTIR Spectroscopy is a widely used technique for gas analyses in industrial applications. It is a technique used in the semiconductor industry for measuring the purity of cleaning, etching, and epi-treatment gases used with various process tools, reactors, and abatement devices. Among chemical companies and R&D facilities, FTIR is applied to combustion thermodynamics and stack gas emissions; ...


    By CIC Photonics, Inc.

  • Renewing Belgrade’s Water Infrastructure

    After the trauma of the 1990s, new foreign and national investments in Belgrade’s water infrastructure is enabling the city to benefit from the latest advances in water supply technology… Introduction Situated on the banks of the rivers Sava and Danube, the citizens of Belgrade, the capital city of Serbia and Montenegro in the Balkans, have long benefited from ready access to water. ...


    By Innovyze

  • Water quality assessment of Malad Creek, Mumbai, India: an impact of sewage and tidal water

    The aim of the study was to carry out water quality assessment and to identify sources responsible for deterioration of quality in the Malad creek, Mumbai, India. Creek receives sewage and wastewater from various drains and partially treated effluent from Malad and Versova treatment facilities. To assess the water quality, sampling locations were identified in the creek based on discharges of ...


    By IWA Publishing

  • Water quality assessment of Malad Creek, Mumbai, India: an impact of sewage and tidal water

    The aim of the study was to carry out water quality assessment and to identify sources responsible for deterioration of quality in the Malad creek, Mumbai, India. Creek receives sewage and wastewater from various drains and partially treated effluent from Malad and Versova treatment facilities. To assess the water quality, sampling locations were identified in the creek based on discharges of ...


    By IWA Publishing

  • Problem Solver for water supply - Pollution incidents

    Pollution in water supplies has always been a concern for water companies and with today’s political climate the issue has never been more important. The threat of terrorism and the requirements of Homeland Security and similar initiatives around the world require that water companies maintain detailed plans for how to ...


    By Innovyze

  • Detection of PPT levels of atrazine in drinking water

    MATRIX: Drinking Water ANALYTES: Atrazine LIMIT OF DETECTION: 5 ppt RANGE OF DETECTION: 5 to 500 ppt MATERIALS: Atrazine RaPID AssayÒ Kit and Sample Diluent Reagents: atrazine control (preparation described below), methanol and ethylacetate (pesticide grade) and distilled or deionized ...


  • Determination of micro and macro elements in waters with the ELAN DRC-e

    The ability of reaction cell technology to reduce the effects of spectral interferences is well-known, but another, lesser-known capability also exists: extending the dynamic range. This is accomplished by adjusting the bandpass parameters with no gas in the cell. Because the bandpass parameters can be adjusted on a per-mass basis, sensitivity can be reduced on selected isotopes without affecting ...


    By PerkinElmer, Inc.

  • Conductivity Measurement in high purity water samples below 10 microsiems/cm

    High Purity Water Resistivity/ Conductivity Measurement Ultra-Pure Water without any chemical impurities will still have a conductivity because of the presence of H* and OH" ions due to the self-ionization of water. Ultra-pure water has a conductivity of 0.055 HSiemens'cm or a resistivity of 18.18 mQ-cm at 25 °C. In order to know the conductivity or resistivity of ultra-pure water it is ...


    By IC Controls Ltd.

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