Residues, Distributions, Sources, and Ecological Risks of OCPs in the Water from Lake Chaohu, China

Table 1

The method recoveries and the instrument detection limits.

Pollutants	Recovery %	Detection limit (ng/mL)
α-HCH	100.4	0.05
β-HCH	99.1	0.05
γ-HCH	88.7	0.06
δ-HCH	90.3	0.06
o,p′-DDE	87.1	0.2
p,p′-DDE	60.4	0.18
o,p′-DDD	80.1	0.06
p,p′-DDD	84.2	0.59
o,p′-DDT	66.4	1.2
p,p′-DDT	84.6	0.07
HCB	54.0	0.01
Heptachlor	68.0	0.1
Aldrin	71.6	0.07
Isodrin	74.7	0.03
γ-chlordane	66.6	0.1
Endosulfan I	89.4	0.06
Endosulfan II	95.7	0.05
Endrin	107.4	0.47