Investigation of trace organic components in chlorinated natural waters using glass WCOT columns
Glass wall-coated open tubular column chromatography has been used for the separation of organic components in fresh and saline waters after treatment with chlorine at concentrations approximating those in power plant cooling waters. Examination of the organic constituents isolated from water samples using an XAD-2 resin column has revealed that a complex mixture of electron-capturing components is produced by chlorination. The analytical scheme for the study of halogenated components consists of clean up steps performed by high speed liquid chromatography followed by gas-liquid chromatography on glass WCOT columns using flame ionization and electron capture GC detectors. Capillary GC/MS was also employed, using electron impact and chemical ionization techniques. Significant problems arose with respect to retaining the identity of hundreds of component peaks as they emerged from different chromatographic columns in different instruments using the different detection systems. Therefore, it was necessary to use procedures for ensuring the reproducibility of retention times in different GC detection modes, and where this was not possible, to develop intercalibration techniques. Concentrations of nonpolar and presumably lipophylic, halogenated components formed by the chlorination of relatively uncontaminated natural waters appear to be very low (in the ng/1 range), with the exception of the haloforms.
- Research Organization:
- Battelle Pacific Northwest Labs., Richland, WA (USA)
- DOE Contract Number:
- EY-76-C-06-1830
- OSTI ID:
- 6426313
- Report Number(s):
- BNWL-SA-6266; CONF-7708108-1
- Country of Publication:
- United States
- Language:
- English
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