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APPLICATION OF SOLID PHASE MICROEXTRACTION GC/MS TO THE CHARACTERIZATION OF HYDROPHILIC DISINFECTION BY-PRODUCTS IN WATER
Citation:
Shoemaker, J A. AND M L. Magnuson. APPLICATION OF SOLID PHASE MICROEXTRACTION GC/MS TO THE CHARACTERIZATION OF HYDROPHILIC DISINFECTION BY-PRODUCTS IN WATER. Presented at 1999 ASMS Conference, Dallas, TX, June 13-17, 1999.
Description:
The U.S. Environmental Protection Agency has given high priority to research aimed at developing methods to extract hydrophilic disinfection by-products (DBPs) from drinking water. Public water supplies are treated with a variety of chemicals aimed at reducing or eliminating infectious diseases. Chlorine is the most common disinfectant used to combat waterborne microbial diseases; however, the use of ozone, chlorine dioxide, and chloramine as disinfectants in on the rise. While reducing the microbial risk, the use of these disinfectants poses a new potential risk due to DBPs formed during the water treatment process. Over the years, analytical techniques such as liquid-liquid or liquid-solid extraction followed by gas chromatography/mass spectrometry (GC/MS) analysis have been employed to characterize DBPs in drinking water. These techniques are suitable for detecting the less water soluble, semivolatile DBPs. However, a large portion of the hydrophilic fraction of drinking water is not being extracted with these conventional methods. Our research is now aimed at using solid phase microextraction (SPME) GC/MS to extract DBPs from model humic acid solutions treated with chlorine and monochloramine.