METHOD OF MULTI-RESIDUAL DETERMINATION OF PHTHALATES IN FOOD MILK SAMPLES BY ULTRASONIC EXTRACTION, MICRO-EXTRACTION IN SOLID PHASE IN HEADSPACE AND GAS CHROMATOGRAPHY COUPLED WITH MASS SPCTROMETRY ()

摘要

The invention relates to an analytical method for determining phthalate in milk samples. According to the invention, the method consists of the milk sample extraction with ultrasounds, by using a mixture of cyclohexane : dichloromethane solvents, at the environmental temperature, for 15...30 min, followed by the extract evaporation, then by the lipide acid destruction, the micro-extraction in the solid phase of the analytes and the simultaneous determination of the 6 phthalic esters by gas chromatography coupled with mass spectrometry.