Compounds Mean recovery
(± SD)
Correlation
Coefficient (R2)
RSD % Detection
limits (ng/g)
heptachlor 97.4 ± 1.0 0.9998 10.6 1
aldrin 70.6 ± 8.4 0.9999 13.1 1
heptachlor epoxide 83.5 ± 1.1 0.9997 7.0 5
γ chlordane 77.7 ± 9.3 0.9998 12.9 5
α chlordane 73.6 ± 1.1 0.9996 10.4 5
4.4 DDE 70.5 ± 9.3 0.9996 12.3 5
endosulfan I 77.2 ± 9.2 0.9999 10.3 1
dieldrin 67.9 ± 1.2 0.9993 10.4 1
endrin 100.6 ± 1.6 0.9999 10.5 1
4.4' DDD 74.2 ± 1.2 0.9996 6.9 1
endosulfan II 67.9 ±1.5 0.9997 11.9 1
4.4 DDT 83.2 ±1.2 0.9991 10.6 1
endrin aldehyde 77.7 ± 1.5 0.9993 15.3 1
methoxychlor 102.5 ± 1.1 0.9997 15.9 1
endosulfan sulfate 111.0± 1.2 0.9992 11.8 1
endrin ketone 77.2 ± 2.7 0.9994 10.9 1
Table 2: Mean recoveries, correlation coefficients, relative standard deviation (RSD%) and detection limits.