ECOLOGICAL RISK ASSESSMENT OF RIVERINE CONTAMINATION IN THE CASPIAN SEA BASIN: A CONCEPTUAL MODEL FOR PERSISTENT ORGANOCHLORINATED COMPOUNDS

摘要

A conceptual model of the ecological risk assessment for persistent organochlorinated compounds (POCs), like DDT, HCH, and PCBs, which contaminate reservoirs and river waters entering into the Caspian Sea is presented. The model can be used to evaluate the toxicity of POCs in these environments. Examples of this model application using POCs monitoring data for water and bottom sediments of different reservoirs and rivers of the Caspian Sea basin are presented.