Comparison of Two Extraction Procedures, SPE and DLLME, for Determining Plasticizer Residues in Hot Drinks at Vending Machines

This paper would like to compare two extraction procedures for analyzing phthalates (PAEs) in hot drinks collected at vending machines, usually coffee and tea. The analytical are based on Solid Phase Extraction (SPE) using C18 cartridge dispersive liquid-liquid microextraction (DLLME) assisted by ultrasound vortex improving the dispersion mechanically, with each followed a routinary method such as GC-FID. Seven (DMP, DEP, DiBP, DBP, DEHP, DOP, DDP) have been analyzed determined. All parameters (i.e., recovery, limit of detection, quantification, enrichment factors, repeatability, reproducibility) investigated discussed, has matrix effect. entire procedure applied drink matrices, e.g., coffee, decaffeinated barley ginseng