Residue levels of organochlorinated insecticides in breast milk: a preliminary report from Al-Kharj, Saudi Arabia.

Breast milk samples obtained from 115 mothers residing in Al-Kharj area, Saudi Arabia, were quantified by gas chromatography and confirmed by gas chromatography-mass spectrometry for lindane, heptachlor, heptachlor epoxide, dieldrin, endrin, p,p-DDE, p,p-DDD, and p,p-DDT. The results showed that 80.9% of the samples contained p,p-DDT, 93.