Earlier studies suggested that the low temperature luminescence properties of PCB's (polychlorinated biphenyls) and DDT compounds could be used to identify these compounds singly or in mixtures. The present investigation was undertaken to develop a relatively simple, rapid method for estimating these compounds in water. The emphasis in this procedure has been on the inherent sensitivity and specificity of luminescence, avoiding chemical separation where possible. The present procedure involves collection of grab samples followed by extraction, drying, concentration, and redilution in a second solvent suitable for luminescence measurement at 77K. Studies include the determination of recoveries and detection sensitivities for some of the compounds of interest and also analyses of several environmental waters. (Modified author abstract)

Prepared by Baird-Atomic, Inc., Government Systems Division, Bedford, Mass., under program element no. 1BA027 (16020 GIY). Includes appendix. Includes bibliographical references (pages 75-77).