Table 2.

Residue levels of OCPs in breast milk from subjects in southern Taiwan (ng/g lipid) (n = 55).

OCPs	Mean ± SD a	Median	Range	N > LODs b
HCHs c
α-HCH	0.236 ± 0.310	0.126	<LOD–1.64	50.0
β-HCH	0.208 ± 0.241	0.117	<LOD–1.31	50.0
γ-HCH	0.128 ± 0.113	0.0922	0.600–0.110	48.0
δ-HCH	0.148 ± 0.122	0.108	<LOD–0.470	45.0
CHLs d
cis-CHL	0.113 ± 0.129	0.0765	<LOD–0.730	43.0
trans-CHL	0.131 ± 0.268	0.0669	<LOD–1.90	28.0
DDTs e
4,4′-DDD	1.00 ± 1.43	0.211	<LOD–5.56	31.0
4,4′-DDE	10.3 ± 6.76	9.84	0.350–44.6	55.0
4,4′-DDT	0.715 ± 0.745	0.391	<LOD–2.87	47.0
ΣEndosulfan f
Endosulfan I	0.194 ± 0.353	0.0905	<LOD–2.20	36.0
Endosulfan II	0.151 ± 0.367	0.0161	<LOD–2.51	25.0
Endosulfan sulfate	0.147 ± 0.179	0.0812	<LOD–0.740	47.0
ΣEndrin g
Endrin	0.313 ± 0.208	0.168	<LOD–3.04	51.0
Endrin ketone	0.112 ± 0.146	0.0194	<LOD–0.670	29.0
Endrin aldehyde	0.152 ± 0.265	0.0564	<LOD–1.56	38.0
ΣHeptachlor h
Heptachlor	0.660 ± 0.685	0.385	0.040–3.48	55.0
Heptachlor epoxide	0.365 ± 0.388	0.226	<LOD–1.53	52.0
Aldrin	0.366 ± 0.474	0.169	0.0100–2.32	51.0
Dieldrin	0.352 ± 0.422	0.172	0.0100–1.90	53.0
Methoxychlor	0.106 ± 0.149	0.0123	<LOD–0.620	26.0

^a Means standard deviations. ^b N > LODs: numbers higher than limits of detection (LODs). ^c HCHs: isomers of hexachlorocyclohexane. ^d CHLs: isomers of chlordane. ^e DDTs: 4,4′-dichlorodiphenyltrichloroethane (4,4′-DDT) and its metabolites, 4,4′-dichloro-diphenyl-dichloroethane (DDD) and 4,4′-dichlorodiphenyldichloro-ethylene (4,4′-DDE). ^f ΣEndosulfan: the sum of Endosulfan I, Endosulfan II, and Endosulfan sulfate. ^g ΣEndrin: Endrin and its derivatives, Endrin ketone and Endrin aldehyde. ^h ΣHeptachlor: Heptachlor and its metabolite (Heptachlor epoxide).