Peroxides present a potential safety hazard during production and storage. They also have a negative effect on fuels and fuel systems by reducing the octane rating in gasoline. To monitor the trace amounts of peroxides Da Vinci Laboratory Solutions has developed the Fast Peroxide Analyzer based upon a flow injection analysis as a safe and fast alternative to the traditional analysis methods, such as ASTM D2340 and ASTM E299.
The Fast Peroxide Analyzer is based upon an Agilent 1260 infinity II HPLC stack configured with a dedicated reaction oven module to automate the safe, fast and precise analysis of active oxygen originated from hydrogen peroxides and other organic peroxides. The analysis of Peroxide, as active Oxygen, is based on the oxidation of Iodide by Peroxide:
ROOH + 2I- + 2H → ROH + I2 + H2O
Two reagents: Acetic Acid in Propanol and Sodium Iodide in Propanol are mixed, resulting in a stream of acidified Iodine solution in Propanol. The sample is injected into this stream. Subsequently, the liquid stream is lead through a heated inert reaction coil. Iodine is formed under temperature controlled conditions inside a dedicated reaction oven developed by Da Vinci.
After passing the reaction coil the HPLC UV detector spectrophotometrically determines the formed Iodine, which is proportional to the level of peroxide.
The Fast Peroxide Analyzer is based on a customized method as an alternative to:
The FPA determines both hydrogen peroxides & organic peroxides in:
Safe and automated alternative to traditional wet chemistry analysis methods
Wide application range: from alpha-olefinic streams to 1,3-Butadiene, Aqueous process streams, Glycols and Styrene
Excellent performance down to ppb level
Configuration based on the standard Agilent HPLC modules saves benchspace
Fast analysis in less than 5 minutes
The DVLS Fast Peroxide Analyzer is based upon the Agilent 1260 Infinity II Liquid Chromatograph (LC) configured with:
A Quaternary Pump with integrated degassing functionality
An Automatic Liquid Sampler for an automated sample introduction
An UV Detector for a single wavelength detection
An DVLS Reaction Oven module to hold and heat the inert reaction coil
The Agilent OpenLab instrument software not only controls the optimal instrument conditions, but also automates the data analysis and reporting.