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ProfIC-Vario-08-Anion

The Professional IC Vario system with Metrohm Inline Matrix Elimination, sequential suppression and conductivity detection enables the determination of anions or cations in difficult matrices.Typical areas of application:Trace analysis in polar solvents; Quality control in fuels, fuel mixtures, and biofuels; Quality management of chemicals; Schematic representation

ProfIC-Vario-08-Cation

The Professional IC Vario system with Metrohm Inline Matrix Elimination and conductivity detection enables the determination of cations or anions (non-suppressed) in difficult matrices.Typical areas of application:Trace analysis in polar solvents; Quality control in fuels, fuel mixtures, and biofuels; Quality management of chemicals; Schematic representation

29540060

The i-Raman Duo is a dual-laser Raman system that captures a wide spectral range with one spectrometer and sampling probe. It uses a 1064 nm laser to measure the fingerprint region (100–2500 cm⁻¹), providing accurate chemical details while reducing fluorescence interference. Additionally, an 860 nm laser covers the stretch region (2500 - 4600 cm⁻¹), allowing detection of specific Raman signals associated with moisture levels and molecular structure.Data from both lasers are collected sequentially and seamlessly combined in SpecSuite software for streamlined analysis. This broader spectral access improves discrimination and facilitates more reliable method development, making the i-Raman Duo ideal for applications in biomedical diagnostics, petrochemicals, biofuels, and agricultural analysis.Discover why the i-Raman Duo is the perfect tool to provide full spectrum clarity:Extended Raman detection range covering 100 cm-1 to 4600 cm-1; Reveals high wavenumber stretch bands of C≡C, S-H, C-H, N-H, and O-H above 2000 cm-1; Fully integrated system means one instrument provide seamless coverage of fingerprint and stretching regions.; Flexible fiber optic probe compatible with a wide array of accessories including a vial holder, cuvette holder, immersion probe, and see-through adapter.; Powerful SpecSuite software for easy Raman data collection in addition to quantitative model building, identification with spectral libraries, and routine analysis. ;

80006052

This poster provides an overview of ion chromatographic methods combined with inline sample preparation for the determination of anions and water-extractable cations in biofuels. In addition, the determination of the oxidation stability is described.

8.000.6011

Quality and process control of biofuels require straightforward, fast and accurate analysis methods. Ion chromatography (IC) is at the leading edge of this effort. Traces of anions in a gasoline/ethanol blend can accurately be determined in the sub-ppb range after Metrohm Inline Matrix Elimination using anion chromatography with conductivity detection after sequential suppression. While the analyte anions are retained on the preconcentration column, the interfering organic gasoline/bioethanol matrix is washed away.Detrimental alkali metals and water-extractable alkaline earth metals in biodiesel are determined in the sub-ppm range using cation chromatography with direct conductivity detection applying automated extraction with nitric acid and subsequent Metrohm Inline Dialysis. Unlike high-molecular substances, ions in the high-ionic strength matrix diffuse through a membrane into the low-ionic water acceptor solution. In biogas reactor samples, low-molecular-weight organic acids stem from the biodegradation of organic matter. Their profile allows important conclusions concerning conversion in the anaerobic digestion reaction. Volatile fatty acids and lactate can be accurately determined by using ion-exclusion chromatography with suppressed conductivity detection after inline dialysis or filtration.

8.000.6020

Several testing methods such as the determination of the acid and the iodine numbers in biodiesel as well as the quantification of sulfate and chloride in bioethanol are described.