Irgens T R, Henderson W M, Shelver W H
J Pharm Sci. 1976 Apr;65(4):608-10. doi: 10.1002/jps.2600650435.
A method was developed for the quantitative GLC determination of lidocaine and its major metabolite monoethylglycinexylidide. By using the specificity of the alkaline flame-ionization detector, this simple analytical procedure is extremely sensitive, rapid, and easily performed.