One-step in-syringe dispersive liquid–liquid microextraction and GC-FID determination of trace amounts of di(2-ethylhexyl) phthalate and its metabolite in human urine samples

• Published in: Journal of analytical chemistry (New York, N.Y.) Vol. 72; no. 5; pp. 557 - 561
• Main Authors: Sargazi, Shahnaz, Mirzaei, Ramazan, Rahmani, Mashaallah, Mohammadi, Mahdi, Khammari, Abdolali, Sheikh, Masoome
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01.05.2017; Springer; Springer Nature B.V
• Subjects: Analytical Chemistry; Chemical properties; Chemistry; Chemistry and Materials Science; Dispersion; Evaporation; Extraction (Chemistry); Extraction processes; Flame ionization detectors; Gas chromatography; Health aspects; Human wastes; Ionization; Metabolites; Methods; Phthalates; Plasticizers; Polymers; Polyvinyl chloride; Urinalysis; Urine; GC-FID; urine analysis; di(2-ethylhexyl) phthalate
• ISSN: 1061-9348; 1608-3199
• DOI: 10.1134/S1061934817050100

Di(2-ethylhexyl) phthalate ( DEHP ) is used as plasticizer in polyvinylchloride ( PVC ) plastics. Its metabolites and the parent phthalates are considered toxic. As the DEHP plasticizers are not chemically bound to PVC, they can migrate, evaporate or be leached into indoor air and atmosphere, foodstuff, and other materials. We have reported a novel, easy and available analytical method for the determination of DEHP and its metabolite, mono(2-ethylhexyl) phthalate ( MEHP ) in human urine samples by the in-syringe dispersive liquid–liquid microextraction method coupled with gas chromatography with flame ionization detector. The limits of detection and precision (RSD) were 2.5 μg/L and 1.4% for DEHP and 1.1 μg/L and 3.0% for MEHP, respectively. This method could be utilized for routine monitoring of the trace DEHP and MEHP in urine of human exposure to plasticizers.