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MULTISPECTRAL IDENTIFICATION OF POTENTIALLY HAZARDOUS BYPRODUCTS OF OZONATION AND CHLORINATION - PART I: STUDIES OF CHROMATOGRAPHIC AND SPECTROSCOPIC PROPERTIES OF MX
Citation:
Collette, T.W., R. Christman, J. McGuire, AND C. Trusty. MULTISPECTRAL IDENTIFICATION OF POTENTIALLY HAZARDOUS BYPRODUCTS OF OZONATION AND CHLORINATION - PART I: STUDIES OF CHROMATOGRAPHIC AND SPECTROSCOPIC PROPERTIES OF MX. U.S. Environmental Protection Agency, Washington, DC, EPA/600/4-91/004 (NTIS PB91161703), 1991.
Impact/Purpose:
see description
Description:
The gas chromatographic (GC) and Fourier transform infrared and mass spectroscopic (FT-IR and MS, respectively) properties of (Z)-2-chloro-3-(dichloromethyl)4-oxobutenoic acid (MX) (a highly mutagenic byproduct of drinking water chlorination) and several related compounds were studied. pecifically, MX, the methyl ester of MX (MX-OMe), and three MX-model compounds [mucochloric acid (MCA), mucobromic acid (MBA) and 2,4-(3H,5H)-furandione (2,4 FD)] were analyzed on our CC/FT-IR and CC/MS systems. oncentration study of MX on the GC/FT-lR system revealed a minimum-identifiable quantity of approximately 10 ng, with linear response over the range of 10 to 600 ng. X was stable to approximately 260 degrees C. he thermal decomposition product produced above that temperature was tentatively identified by CC/MS as 2-(dichloromethyl)-3- chloro-2-propenal. he GC/FT-IR detector response for 600 ng of MX was compared to that of 600 ng of MX that had been methylated. The ratio of the detector response indicated that the methylation efficiency was, at best, 40%. dditionally, several extracts of chlorinations of dissolved organic material were analyzed. o MX was detected. he approximate extraction efficiencies of MX and MCA were determined for several organic solvents, of which ethyl acetate was the most efficient for both compounds.