APPLICATION OF SOLID-PHASE MICROEXTRACTION FOR DETERMINATION OF VOLATILE HALOGENATED HYDROCARBONS IN AIR AND WATER OF AN INDOOR SWIMMING POOL

Applicability of Solid Phase Microextraction (SPME) to analysis of vol atile halogenated hydrocarbons (VE-IH) in water and air of indoor swim ming pool has been investigated. Experiments performed with dichlorome thane, trichloromethane, bromodichloromethane, dibromochloromethane, t ribromomethane, 1,1,1-trichloroethane show that the response of a comb ined system (SPME-GC-MS) versus concentration of analytes in water is linear in the concentration range studied (0.1-70ppb). Relative standa rd deviations (RSD) for 7 measurements (n=7) range from 3.1 and 3.2% f or bromodichloromethane and trichloromethane, respectively to 8.7% for tribromomethane and 1,1,1-trichloroethane. The detection limits were on the level of 0.02 ppb. The procedure developed was used to determin e VHHs in real samples, i.e., in samples of air and water from an indo or swimming pool. The highest concentrations were for trichloromethane and varied considerably from day to day (11.2 - 67 ppb), which can be related to mixing in different proportions of water from the municipa l supply system and from private groundwater well.