Determination of methenamine in biological samples by gas—liquid chromatography

Methenamine in dairy products by isotope dilution gas chromatography coupled with triple quadrupole mass spectrometry: Method validation and occurrence

“…In the pharmaceutical and medical field, different methods have been used to determine the methenamine, including ion-exchange high performance liquid chromatography (Pavitrapok & Williams, 2006), capillary gas chromatography combined with flame ionization detector (Mirza, George, Bodenmiller, & Belanich, 1998) and gaseliquid chromatography combined with nitrogen-selective detector (Nieminen, Kangas, Anttila, & Hautoniemi, 1980). Methenamine has also been detected in river water by liquid chromatograph-tandem mass spectrometer (Kakimoto, Motegi, & Nojiri, 2013).…”