Document Abstract
One of the major ground water pollutants is Fluoride, which is contributed in the
environment by both natural (geogenic) and anthropogenic means. Fluorine is an essential element for
living organism. Chronic exposure study of 60 days was carried out in model fish, Clarias batrachus, where
the fishes were divided into three groups; control (Group I), 10 mgL-1
(Group II) and 20mgL-1
(Group III)
NaF.In a regular interval period of 15 days, accumulation status were reported in biological tissues.
Maximum fluoride accumulation was found in Bone followed by liver, kidney, muscle and blood. After
exposure of fishes to NaF for 60 days, depuration pattern was studied in group II and group III. Fishes from
exposed groups were transferred to clean water, for a period of 20 days. Maximum depuration was observed
in liver tissues followed by muscle, bone, kidney, blood. Depuration in group III was in the order; liver
followed by kidney and muscle, bone and blood.