Tezel, Ulas published the artcileThree-tier methodology for quantification and characterization of naphthenic acids in aqueous solutions, Computed Properties of 23616-79-7, the publication is Preprints of Symposia – American Chemical Society, Division of Fuel Chemistry (2010), 55(2), 435-438, database is CAplus.
A novel, three-tier methodol. developed for the quantification, elucidation of naphthenic acid (NA) distribution and identification of the mol. structure of NAs present in com. NA aqueous mixtures is described. The methodol. was tested on an aqueous solution of TCl NA salts as a model NA mixture Pair-ion extraction with BTBA and consecutive quantification of BTBA or extracted ions with HPLC-UV/Vis and ESI/MS, resp. is used to quantify NAs in the solution at concentrations as low as 0.5 mg/L. The min. detection limit of the PIX method was 2 to 40 times lower than the conventional NA measurement methods. Also the method requires low sample volume and no sample pretreatment. The extract which is used for NA quantification was analyzed by ESI/MS in neg. ionization mode to elucidate NA distribution in the sample. Results showed that the TCl NA mixture is mainly composed of mono and dicyclic carboxylic acids with a carbon number ranging between 10 and 25. The methodol. discussed will help to characterize NAs in crude oil, desalter brine petroleum refining process wastewater, oil-affected natural water resources, as well as to identify those NA compounds which may be potentially toxic in engineered and natural biol. systems.
Preprints of Symposia – American Chemical Society, Division of Fuel Chemistry published new progress about 23616-79-7. 23616-79-7 belongs to chlorides-buliding-blocks, auxiliary class Phase Transfer Catalyst, name is N-Benzyl-N,N-dibutylbutan-1-aminium chloride, and the molecular formula is C16H24BNO2, Computed Properties of 23616-79-7.
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