Organochlorine insecticide residues present in raw milk sold in the department córdoba, colombia

In this investigation organochlorine pesticide residues in raw milk from Dairy herds in the Cordoba department were determined. During the extraction procedure using a column of diatomaceous earth as eluting system a mixture of n-hexane-acetone-ethyl acetate (4:2:1), followed by 5% methanol in hexan...