Abstract

Coastal and open seawater samples were examined with respect to halocarbons originating from different chlorination processes and natural sources. Chloroform from the bleaching of pulp and bromoform from the chlorination of seawater in power plants were used as tracer substances to establish the movement of the effluent plumes. The analytical method was based on pentane extraction of 100-mL sampes, followed by glass capillary gas chromatograpy with electron-capture detection. The method is simple and fast, permitting large areas to be monitored during a short period of time when stable meteorological conditions are prevailing.

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