title: Polymer-coated sample cup for quantitative analysis of semi-volatile phthalates in polymeric materials by thermal desorption-gas chromatography-mass spectrometry.
abstract: A new "polymer-coated" sample cup useful for the analysis of phthalates in polymeric materials by thermal desorption (TD)-GC/MS using a temperature programmable furnace type pyrolyzer as a TD device was developed to suppress the emission of semi-volatile phthalates such as dimethyl phthalate (DMP) and diethyl phthalate (DEP) during the measurements. The inner surface of a sample cup was coated by polymers which act as a sorbent for the phthalates. Three polymers, polyvinyl chloride, polystyrene and poly (methyl methacrylate), were chosen as the coating polymers. A mixture of ten phthalates including DMP and DEP was used as the test sample to estimate the performance of the sample cups. When a conventional sample cup without any polymer coating was used, 90 and 50% reductions in the peak areas of DMP and DEP were respectively observed at the waiting time of 200 min. On the contrary, no reduction of peak area of DMP and DEP during the same waiting time was observed with any one of the three coating polymers at the proper polymer film thickness. These results suggest that the polymer-coated sample cup suppresses the emission of semi-volatile phthalates and is effective for the analysis of phthalates containing DMP and DEP by TD-GC/MS.
authors: Frontier Laboratories Ltd., 1-8-14, Saikon, Koriyama, Fukushima 963-8862, Japan. Electronic address: hosaka@frontier-lab.com.
authors: Akihiko
authors: A
authors: Hosaka
authors: Frontier Laboratories Ltd., 1-8-14, Saikon, Koriyama, Fukushima 963-8862, Japan.
authors: Atsushi
authors: A
authors: Watanabe
authors: Frontier Laboratories Ltd., 1-8-14, Saikon, Koriyama, Fukushima 963-8862, Japan.
authors: Chuichi
authors: C
authors: Watanabe
authors: Frontier Laboratories Ltd., 1-8-14, Saikon, Koriyama, Fukushima 963-8862, Japan; Department of Chemistry, Graduate School of Science, Tohoku University, Aoba-ku, Sendai 980-8578, Japan.
authors: Norio
authors: N
authors: Teramae
authors: Department of Materials Sciences and Engineering, Graduate School of Engineering, Nagoya Institute of Technology, Nagoya 466-8555, Japan.
authors: Hajime
authors: H
authors: Ohtani
mesh_terms: D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods; D010795:Phthalic Acids / Q000032:analysis*; D019904:Polymethyl Methacrylate; D011137:Polystyrenes; D011143:Polyvinyl Chloride; D014835:Volatilization
chemical_list: D010795:Phthalic Acids; D011137:Polystyrenes; C024629:dimethyl phthalate; C032279:phthalic acid; D011143:Polyvinyl Chloride; D019904:Polymethyl Methacrylate; C007379:diethyl phthalate
keywords: Diethyl phthalate; Dimethyl phthalate; Polymer-coated sample cup; Pyrolyzer; Thermal desorption-GC/MS