title: [Analytical method of volatile substances in styrene polymers by head-space gas chromatography using o-dichlorobenzene].
abstract: A quantitative analytical method for 8 volatile substances (such as styrene) in styrene polymers that are not soluble in tetrahydrofuran (THF) and dimethylformamide was developed. The sample was chopped finely and a 0.1 g portion was weighed in a head-space vial. To this was added 2 mL of o-dichlorobenzene (DCB) including 50 μg/mL of internal standard. The vial was sealed and heated at 140℃ for 1 hour and then 1 mL of the head-space gas was injected into a gas chromatograph using an automatic sampler. Samples of syndiotactic polystyrene, styrene block copolymer and modified polyphenylenether were dissolved or dispersed in DCB. Separation and accuracy of the method were satisfactory. Recoveries were 95-113% at the spiked concentration of 300 μg/g. The method was confirmed to be suitable for general styrene polymers that are soluble in THF. Equivalent results were obtained with this method and the method in "Specifications and Standards for Food, Food Additives, etc. " for general purpose polystyrene, high impact polystyrene, styrene/acrylonitrile resin and acrylonitrile/butadiene/styrene resin.
authors.affiliation: Japan Food Research Laboratories.
authors.forename: Daisuke
authors.initials: D
authors.lastname: Miyake
authors.forename: Kenji
authors.initials: K
authors.lastname: Hayakawa
authors.forename: Takakazu
authors.initials: T
authors.lastname: Nomura
mesh_terms: D002722:Chlorobenzenes / Q000032:analysis*; D002849:Chromatography, Gas / Q000379:methods*; D005503:Food Additives / Q000592:standards; D005504:Food Analysis / Q000379:methods / Q000592:standards; D005663:Furans; D011137:Polystyrenes / Q000737:chemistry*; D012995:Solubility; D020058:Styrene / Q000032:analysis*
chemical_list: D002722:Chlorobenzenes; D005503:Food Additives; D005663:Furans; D011137:Polystyrenes; C018674:tetrahydrofuran; D020058:Styrene; C004726:2-dichlorobenzene