Density tunable dispersive solid phase extraction of four organochlorine pesticides from edible oil sample using rhodamine B as a sorbent prior to GC-MS analysis.

In this study, a new method was used to evaluate the levels of four organochlorine pesticides in edible samples. In this method, a density tunable dispersive solid phase extraction procedure was coupled with gas chromatography-mass spectrometry. Rhodamine B was used as a sorbent, which was distributed throughout the oil matrix with the aid of evaporation of methanol.