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drinking water analysis Applications

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    Bromate analysis for the drinking water industry

    Bromate forms during the ozonization of drinking water. Several international standards stipulate detection limits and test methods. Conductivity detection with chemical suppression allows the determination of bromate in the lower μg/L range. In the ng/L range, bromate can be detected by IC/MS coupling or post-column derivatization with potassium iodide and subsequent UV detection.

    By Metrohm AG based in Herisau, SWITZERLAND.

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    Analysis of Herbicides in Drinking Water

    Herbicides are used throughout the world to combat the growth of unwanted plant life. These polar compounds are hydrophilic, so they may find their way into drinking water sources. While gas chromatography has historically been the preferred technique for analysis of herbicides in water samples, the use of LC-MS/MS for this application is gaining acceptance. This is due to the power of MS/MS to provide detailed identification of multiple analytes, but also in part due to the variety of HPLC stationary phases that are available. In particular, several HPLC phases are available that provide great retention and peak shapes for polar analytes, such as herbicides, even under mostly aqueous mobile phase conditions. The combination of these factors may possibly eliminate need for time-consuming sample preparation.

    By Sigma-Aldrich Co., LLC based in Bellefonte, PENNSYLVANIA (USA).

  • Drinking water analysis for municipalities

    GE Analytical Instruments offers several Sievers TOC Analyzer models designed specifically to simplify monitoring of drinking water treatment plants. Always knowing the TOC levels throughout a water treatment plant, and improving TOC reduction, can help a plant not only control DBPs, but also implement efficient and potentially cost saving treatment processes.

    By GE Analytical Instruments based in Boulder, COLORADO (USA).

  • Environmental Water Analysis

    Now for the first time you can measure ion levels in drinking / tap water, rivers and lakes using one probe and one set of calibration solutions. We have probes specially tailored for environmental testing. Our Environmental probes measure Chloride, Ammonium and Nitrogen or we have a total nitrogen probe measuring Ammonium and Nitrogen. Each probe can be calibrated in our unique calibration solutions allowing you to calibrate all sensors simultaneously and take measurements in drinking or river water. Probes are also available in our standard four or six ion combinations and can be custom packaged upon request.

    By CleanGrow based in Blackpool, IRELAND.

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    Analysis of VOC compounds in water by Purge & Trap or dynamic headspace

    Context & Challenges Volatile organic compounds (VOC) can be dissolved in water. Sometimes water is polluted and to study contamination of VOC in finished drinking water, VOC must be measured. Chromatotec® Solutions Chromatotec® has developed a specific system for the measurement of VOC in water: a Purge & Trap system, the airmoPURGE. The analyzer is coupled with a degasing system allowing the extraction of dissolved gases. The complete system is based on: - 502.2 method from US EPA – “Volatile organic compounds in water by purge and trap capillary column gas chromatography with photoionization and electrolytic conductivity detectors in series – Revision 2.1”. - 524.2 method from US EPA – “Measurement of purgeable organic compounds in water by capillary column gas chromatography/mass spectrometry – Revision 4.0”.

    By Chromatotec Group based in Val de Virvée, FRANCE.

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