Summary
A simple method has been developed to determine the concentration of organic chlorine in waste oil. The determination is based on the conversion of organic chlorine to inorganic chloride by reaction with sodium biphenyl followed by extraction with nitric acid and a mixture of nitric acid and water. The concentration of chloride is determined by direct potentiometry with an ion-selective electrode. The limit of determination amounts to 3·10−5 mol·l−1 chloride ions with a standard deviation of 3.5%. Different samples of waste oil have been analyzed and the results have been compared to those obtained by combustion in a H2/O2 flame followed by potentiometric titration with silver nitrate.
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Gödde, U., Golloch, A. Determination of total chlorine in waste oil. Fresenius J Anal Chem 339, 15–18 (1991). https://doi.org/10.1007/BF00324752
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DOI: https://doi.org/10.1007/BF00324752