title: High-throughput determination of mono- and di(2-ethylhexyl)phthalate migration from PVC tubing to drugs using liquid chromatography-tandem mass spectrometry.
abstract: The risk assessment of di(2-ethylhexyl) phthalate (DEHP) that migrated from polyvinyl chloride (PVC) medical devices is an important issue for hospitalized patients. Many studies have been conducted to determine the level of DEHP migration. A recent report has indicated that DEHP in blood bags was hydrolyzed by esterase to mono(2-ethylhexyl) phthalate (MEHP). Therefore, a method for the simultaneous determination of DEHP and MEHP was developed. The migration of DEHP and MEHP from PVC tubing to drugs was examined. Although we detected MEHP in the drugs, we found no enzymatic activity involved in the migration process. Some reports have indicated that hydrolysis may have occurred during sterilization by autoclaving. However, we did not perform any heat treatment. It is speculated that the MEHP migrated directly from the PVC tubing. The simultaneous determination of DEHP and MEHP is required for risk assessment, as MEHP may be even more toxic than the parent compound.
authors.affiliation: Department of Analytical Chemistry, Faculty of Pharmaceutical Sciences, Hoshi University, 2-4-41 Ebara, Shinagawa-ku, Tokyo 142-8501, Japan.
authors.forename: Rie
authors.initials: R
authors.lastname: Ito
authors.forename: Fumie
authors.initials: F
authors.lastname: Seshimo
authors.forename: Naoko
authors.initials: N
authors.lastname: Miura
authors.forename: Migaku
authors.initials: M
authors.lastname: Kawaguchi
authors.forename: Koichi
authors.initials: K
authors.lastname: Saito
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Nakazawa
mesh_terms: D002853:Chromatography, Liquid; D004051:Diethylhexyl Phthalate / Q000737:chemistry*; D013058:Mass Spectrometry; D004364:Pharmaceutical Preparations / Q000737:chemistry*; D011143:Polyvinyl Chloride / Q000737:chemistry; D012015:Reference Standards
chemical_list: D004364:Pharmaceutical Preparations; D011143:Polyvinyl Chloride; D004051:Diethylhexyl Phthalate