Experimentele en instrumentele aspecten van de infraroodspectrometrische bepaling van minerale olie in water en grond
Visser T Vuuren D van
Visser T
Vuuren D van
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Series / Report no.
Open Access
Type
Report
Language
nl
Date of publication
1993-08-31
Year of publication
Research Projects
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Journal Issue
Title
Experimentele en instrumentele aspecten van de
infraroodspectrometrische bepaling van minerale olie in water en
grond
Translated Title
[Experimental and instrumental aspects of infrared
spectrometric determination of mineral oil in water and
ground.]
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Abstract
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The effect of various experimental and instrumental parameters on the quantitative analysis of mineral oil components by means of infrared (IR) spectrometry has been investigated. Standard NEN-methods 6675 en 5733 have been used as starting point. Experiments have been carried out in parallel on a dispersive and a Fourier-Transform infrared spectrometer and results have been compared. The influence of the solvents carbontetrachloride, 1,1,2-trichlorotrifluoroethane (freon-113) and tetrachloroethene on the linearity, reproducability and detection limits have been determined. Factors affecting the analysis appear to be solvent, evaporation effects, pipet-type, cell-type, cell position, instrument-type and optical resolution. Detection limits in freon-113 and carbontetrachloride on the Fourier-Transform instrument are found to be about 0.2 mug/l ; a factor of 3 better than on the dispersive machine. Tetrachloroethene was found to be less suited as a solvent. Recommendations are made to improve the present standard procedures.
The effect of various experimental and instrumental parameters on the quantitative analysis of mineral oil components by means of infrared (IR) spectrometry has been investigated. Standard NEN-methods 6675 en 5733 have been used as starting point. Experiments have been carried out in parallel on a dispersive and a Fourier-Transform infrared spectrometer and results have been compared. The influence of the solvents carbontetrachloride, 1,1,2-trichlorotrifluoroethane (freon-113) and tetrachloroethene on the linearity, reproducability and detection limits have been determined. Factors affecting the analysis appear to be solvent, evaporation effects, pipet-type, cell-type, cell position, instrument-type and optical resolution. Detection limits in freon-113 and carbontetrachloride on the Fourier-Transform instrument are found to be about 0.2 mug/l ; a factor of 3 better than on the dispersive machine. Tetrachloroethene was found to be less suited as a solvent. Recommendations are made to improve the present standard procedures.
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RIMH/ZH