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  • Title: Colorimetric method for determination of ethanol in presence of methanol.
    Author: Sane RT, Kamat SS, Pandit AD.
    Journal: J Assoc Off Anal Chem; 1981 Sep; 64(5):1145-8. PubMed ID: 7287611.
    Abstract:
    A method is described for the determination of ethanol in the presence of methanol without pre-separation. The sample is oxidized to give acetaldehyde and formaldehyde. 2-Thiobarbituric acid reagent is added and selectively forms a pink adduct with acetaldehyde, but not with formaldehyde. The method is sensitive, obeys Beer's law in the concentration range 18-80 microgram/mL, and has an advantage over other methods because it does not detect any "apparent normal value" of alcohol in blood.
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