Monitoring anions in the primary circuit of a PWR

Metrohm can now determine easily and accurately the trace levels of anions in the primary circuit of a PWR nuclear power plant, using ion chromatography

Metrohm have improved their inline sample preparation set-up for ion chromatography (IC), so that it is now possible to determine easily and accurately the trace levels of anions in the primary circuit of a nuclear power plant.

Utilising in-line matrix elimination to remove the high levels of boric acid and in-line cation exchange to remove the disturbing cations, the MIC 6 Advanced Modular IC system can also resolve isocratically glycolate, acetate and formate: all key indicators to the decomposition of organic compounds, in addition to the standard anions.

In order to improve the reproducibility as well as the long-term reliability of the pre-concentration technique in the hot zone, an improved set-up using a Metrohm Dosino has been applied that also benefits reduced user intervention.

The Dosino affords flexible, high-precision liquid handling and means that the precision of the pre-concentration volume is similar to fixed loop injections.

The methodology is further improved through reduced interaction between the sample and the autosampler through the use of larger sample vials (customers own) and custom sample racks (carousel).

The use of a strictly separated delivery of ultra-pure water and an external cleaning position for the needle reduces cross contamination and a new trap column further eliminates impurities in the ultra pure water delivery.

The Metrohm In-line Calibration technique allows the user to calibrate the IC System in the low ppb range using high ppb to ppm calibration solutions which helps prevent contamination as well as high blank values.

Sixty years of experience in ion analysis ensure that the reliability of the instrument and support from Metrohm are assured.

The running costs of the IC system are minimal with no costly replacement of suppressor membranes or eluent cartridges required .

To learn more about the trace analysis of anions using Metrohm In-line Sample Preparation, please contact Metrohm UK.

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