L1 /   
9
CH3041
OTHER OCs
• Replacements for DDT initially were other
OCs such as Dieldrin & Lindane (BHC). These were found to persist and bioaccumulate and since have been banned.
• Dieldrin : The variation of
[dieldrin] in walleye fish with 
time in Lake Eyrie has
shown a decline.
    Dieldrin is
a cyclodiene insecticide, all are related to
perchlorocyclopentadiene.