Effect of ammonium fluoride as a mobile phase additive on quantitativity of fatty acids in electrospray ionization-liquid chromatography-tandem mass spectrometry. - Kawabata K; Muraoka H; Ohtsuki Y; Takasu S; Esaka Y; Tokumura A; Nishi H (Analytical sciences : the international journal of the Japan Society for Analytical Chemistry, 2025)