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RESEARCH PRODUCT
Determination of Paint Solvents by Vapour Phase Fourier Transform Infrared Spectrometry.
Emilio López-anreusSalvador GarriguesMiguel De La Guardiasubject
Detection limitChromatographyChemistryAnalytical chemistryInfrared spectroscopychemistry.chemical_elementPaint thinnerNitrogenTolueneAtomic and Molecular Physics and OpticsAnalytical ChemistrySolventchemistry.chemical_compoundPhase (matter)CalibrationSpectroscopydescription
Abstract A fast procedure has been developed for the direct determination of paint solvents. The method is based on the injection of small volumes of untreated solvent mixtures into a heated Pyrex glass reactor in which the sample is volatilized and introduced by means of a flow of nitrogen into an IR multiple pass gas cell and the spectrum in the mid-IR region is registered as a function of time. Data found for samples are interpolated in calibration graphs obtained by injecting different volumes of pure compounds which constitute the solvent mixture. A methylisobutylketone (MIBK) toluene mixture was used as test system to develop the proposed procedure. The method provides a limit of detection of the order of 1–4 μg, a relative standard deviation of the order of 0.4 to 2% for five independent measurements, and recovery percentage values from 99.8 till 103.6 %. A commercial sample of polyurethane paint solvent has been analysed by the developed procedure.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1997-12-01 | Spectroscopy Letters |