The paper deals with HCH spread in various trophic levels of the Babeni Lak
e biocenoses using samples from such trophic levels in laboratory chemical
anaryses.(1) The bioaccumulation level in the toll ring - fish - of Lindane
and metabolites is established, as well as their spreading in various part
s of other trophic levels. Average bioaccumulation factors are calculated a
nd a ranking thereof hi biocenoses for Lindane and its metabolites (congene
rs alpha, beta, delta - HCH) is done.