The determination was done with Advanced MIC 6 system on the Metrosep A Supp 7 – 250 column using sodium carbonate eluent with chemical suppression and conductivity detection.

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The determination was done with Advanced MIC 4 system on the Metrosep C 2 – 250 column using isocratic tartaric acid / dipicolinic acid eluent and direct conductivity detection.

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The ProfIC 15 ion chromatography package consists of the 850 Professional IC, the 858 Professional Sample Processor and Metrohm’s patented Dosino technology. It is a complete ion chromatographic system and available as an Anion, Cation or AnCat system. The ProfIC 15 offers flexible injection volumes and is controlled by the user friendly and intuitive ion chromatography software MagIC Net.

The determination of cations was done on a Metrosep C 4 - 150 column, automatically multipoint calibrated with a single standard using an oxalic acid eluent and conductivity detection.

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The ProfIC 15 ion chromatography package consists of the 850 Professional IC, the 858 Professional Sample Processor and Metrohm’s patented Dosino technology. It is a complete ion chromatographic system and available as an Anion, Cation or AnCat system. The ProfIC 15 offers flexible injection volumes and is controlled by the user friendly and intuitive ion chromatography software MagIC Net.

The determination of anions was done on a Metrosep A Supp 5 – 150 column, automatically multipoint calibrated with a single standard using sodium carbonate eluent with sequential suppression and conductivity detection.

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Apart from the target ions, real-life samples often contain interfering substances that complicate quantification and require time-consuming sample preparation steps like filtration, dialysis, SPE, preconcentration, etc.

The presented IC system meets the analytical challenge by applying sample preconcentration. A preconcentration column acts as the interface between the IC system and the MISP – Metrohm Inline Sample Preparation. All preparation steps take place in the low-pressure part of the system, outside the IC system proper. The cations to be analyzed enter the IC system via the preconcentration column. This arrangement is very robust, easy to configure and highly suitable for accurately determining trace levels (ppt) of lithium and sodium in the presence of ppm quantities of ethanolamine. The relative standard deviations are better than 1.5%. Carryover for metal cations is below 0.3%; recovery rates are better than 98.5%.

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As manifested by the numerous standard procedures used all over the world, the determination of the total acid number (TAN) and total base number (TBN) of petroleum products is crucial for quality control in the oil industry. These parameters provide invaluable information regarding petroleum degradation (oil aging) as well as the corrosion enhancement properties and alkaline buffer capacity of the material.

The standards ASTM D 664 and ASTM D 2896 describe two simple methods for the determination of TAN and TBN based on potentiometric titration of the acidic and basic constituents, respectively. Despite being relatively simple, these procedures, if carried out manually, are time-consuming and labor-intensive. Further drawbacks are the handling of toxic solvent mixtures and the tedious cleaning of oil-smeared beakers and electrodes.

The 864 Robotic Balance Sample Processor allows to circumvent these drawbacks. The fully automated and computer-controlled TAN/TBN determinations include weighing, solvent addition, waiting times for complete dissolution and optimized electrode conditioning procedures between samples, as well as convenient collection of all data in a sophisticated database. Results are available within minutes and even very low TAN/TBN values can be determined with reproducibilities better than 2%

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The determination of single digit ppb copper was achieved using a Metrosep C4 150 high resolution column, 2mM Oxalic Acid eluent, and PAR (4-(2-Pyridylazo) resorcinol / Ammonium Hydroxide / Glacial Acetic Acid) post column reactant. Bischoff Lambda 1010 UV/VIS detection with post column reaction is required when analyzing trace level copper.

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Boric acid titrations are very important measurements used in the nuclear power industry. The 905 Titrando automates the entire boric acid titration quickly and efficiently with minimal operator interaction.

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Simultaneous determination of the 7 standard anions (Fl^-, Cl^-, NO₂^-, Br^-, NO₃^-, HPO₄^2-, SO₄^2-), DCA and disinfectant by products (oxyhalides – ClO₂^-, ClO₃^-, BrO₃^-) was done on the Metrosep A Supp 7 - 250 column using a sodium carbonate eluent, chemical suppression and conductivity detection. The analyses were performed according to the US EPA method 300 A&B using the using the 850 Professional IC as well as the 881 Compact IC pro.

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The ion chromatography setup consists of the 850 Professional IC, the 858 Professional Sample Processor and Metrohm's patented Dosino technology. Metrohm intelligent Preconcentration Technique with inline Matrix Elimination combines the accurate handling of a wide variable sample volume with the most efficient sample preparation. Inline matrix elimination is a technique that is able to separate ionic analytes from the uncharged matrix. Only the ion of interest enters the analysis column, this guarantee a long column life time and no matrix disturbance. The determination of anions was done on a Metrosep A Supp 5 - 150/4.0 column, a sodium carbonate/bicarbonate eluent and sequential suppression with conductivity detection. The automatic calibration was done by a single multi-ion standard. The calibration of 0.1 – 10 µg/L was achieved by adjusting the injection volume from 40 up to 4000 µL

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