Determination of very volatile organic compounds in environmental water by injection of a large amount of headspace gas into a gas chromatograph.
An injection method for a large amount of headspace gas which enables determination of trace amounts of very volatile organic compounds (VVOCs), dichlorodifluoromethane, chloromethane, vinyl chloride, bromomethane, chloroethane and trichlorofluoromethane in all kinds of environmental water was developed. A gas phase equilibrated with the water phase in a vial was purged with helium for a short time. The VVOCs were then introduced into a trapping tube packed with Tenax TA, which had been cooled using carbon dioxide. After trapping, the VVOCs were thermally desorbed and put into a GC-MS system for subsequent analysis. This method is applicable to various types of samples.
Hino
T
T
Public Health Laboratory of Chiba Prefecture, Japan.
Nakanishi
S
S
Maeda
T
T
Hobo
T
T
D002849:Chromatography, Gas; D006838:Hydrocarbons / Q000032:analysis*; D007202:Indicators and Reagents; D007564:Japan; D013696:Temperature; D014874:Water Pollutants, Chemical / Q000032:analysis*; D014881:Water Supply / Q000032:analysis
D006838:Hydrocarbons; D007202:Indicators and Reagents; D014874:Water Pollutants, Chemical