PCDD PCDF ON LAND AROUND AN INDUSTRIAL SITE AND IDENTIFICATION OF SOURCE/

Following the discovery of elevated levels of PCDD/PCDF in dairy produ cts and in flue gases at a nearby industrial site, the levels and spat ial distribution of these compounds on surrounding land were determine d through soil monitoring. In mass terms, the levels in soil were exce ssive relative to the UK background but in terms of toxicity they were less significant. There were positive correlations between wind direc tions and deposition levels. The relative amounts of the prominent con geners/congener groups in the soil were similar to those in the flue g as but different from those in the background. An incinerator of chemi cal waste was identified as the likely source of the PCDD/PCDF. (C) 19 98 Elsevier Science Ltd. All rights reserved.