000			01895nam a22002057a 4500
003			DOH
005			20210325104743.0
008			210324b ||||| |||| 00| 0 eng d
245	0	0	_aPlastics : _bvolatile substances in polystyrene / _cMarilou U. Martinez [and two others]
520	3		_aA total of 51 polystyrene samples, consisting of 32 in pellet forms and 19 as finished articles, were analyzed for the following volatile substances: toloune, ethyl benzene, isopropyl benzene, n-propyl benzene and styrene. These volatile substances were determined by gas chromatography. The volatile substances in 32 polystyrene pellet samples were found to be as follows: the toluene content ranged from not detected in 30 samples to 76 ppm; ethyl benzene content fron not detected in 3 samples to 878 ppm; isopropyl benzene content from not detected in 10 samples to 650 ppm; n-propylbenzene content from not detected in 12 samples to 453 ppm; styrene monomer content from 787 to 3059 ppm; total volatile substances from 787 to 3389 ppm. In 19 finished articles, the values obtained for toulene content ranged from not detected in 17 samples to 86 ppm; ethyl benzene content from not detected in 6 samples to 1797 ppm; isopropyl benzene content from not detected in 11 samples to 363 ppm; n-propyl benzene content from not detected in 11 samples to 178 ppm; styrene monomer content from 670 to 2705 ppm; total volatile substances from 677 to 4528 ppm. All samples were shown to contain styrene monometer, however, only 1 finished article and 5 pellet samples exceeded 2000 ppm level.(Author)
580			_aBFAD Laboratory Information Bulletin, 1995 1 (1) pages 35-41
650		2	_aPolystyrenes
650		2	_aPlastics
650		2	_aVolatilization
653			_aVolatile Substances
700	1		_aMartinez, Marilou U.
700	1		_aBalde, Helen A.
700	1		_aMartin, Rosario E.
942			_cJA
999			_c3768 _d3768