Application of disinfection processes during water treatment could lead to the formation of disinfection by-products (DBPs)。The major categories of
DBPs ,were trihalomethanes (THMs) and haloacetic acids (HAAs). A new analytical technique called solid-phase microextraction (SPME) has been developed which is favorable in terms of solvent-free and convenience. Therefore the purpose of this study was to develop a new simultaneous analytical method for trihalomethanes (THMs) and haloacetic acids (HAAs) in drinking water based on SPME.
Known concentrations of trihalomethanes and haloacetic acids were prepared in spiked water samples. For the analysis of haloacetic acids, the derivatization of the acids to their ethyl esters using hydrochloric acid and methanol in 100℃ water bath for 20 minutes, followed by headspace SPME with a PDMS/DVB fiber. Headspace adsorptions were performed followed by GC/MS analysis. Affects factor of SPME included the types of fiber, temperatures, speeds of magnetic stirring, and salts were all the factors .
The analysis of trihalomethanes (THMs) and haloacetic acids (HAAs) in water by 65μmPolydimethylsiloxane /Divinylbenzene (PDMS/DVB) SPME fiber were found to be possible. For future work, efforts on the tests of simultaneous analysis of trihalomethanes (THMs) and haloacetic acids (HAAs) are needed.
