Organochlorine Pesticide Residues in Sediments and Waters from Cocoa Producing Areas of Ondo State, Southwestern Nigeria
Table 3
Mean concentration (μg/g) of OCPs in sediment samples of some rivers in Ondo State during the wet season.
Analytes
Agoo
Ose
Ala
Oluwa
Ogbese
Oni
Aponmu
Osun
Opa
Owena-Osun
Owena-Ondo
HCB
ND
ND
ND
NS
α-BHC
ND
ND
ND
ND
ND
ND
NS
β-BHC
ND
ND
ND
ND
ND
ND
NS
γ-BHC
ND
ND
ND
ND
NS
Heptachlor
ND
ND
ND
ND
ND
ND
NS
Aldrin
ND
ND
ND
ND
ND
ND
ND
ND
ND
NS
Trans-chlordane
ND
ND
ND
ND
NS
Cis-chlordane
ND
ND
ND
ND
ND
NS
α-endosulfan
ND
ND
ND
ND
ND
NS
β-endosulfan
ND
ND
ND
ND
NS
p,p′-DDE
ND
ND
ND
NS
o,p′-DDD
ND
ND
ND
ND
ND
ND
NS
p,p′-DDD
ND
ND
ND
ND
ND
NS
p,p′-DDT
ND
ND
ND
NS
Dieldrin
NS
Endrin
ND
ND
ND
ND
ND
ND
NS
in the same column followed by the same alphabets are not significantly different at using the new Duncan Multiple Range Test, NS: no sample, ND: not detected.