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A technique is presented for the economical, routine, and quantitative analysis of contamination by dichloro-diphenyltrichloroethanes (DDTs) [ pp ′-DDT,  pp ′-dichlorodiphenyl dichloroethylene, and  pp ′-dichlorodiphenyl dichloreothane in beef tallow and chicken fat samples, based on their separation using matrix solid-phase dispersion (MSPD) extraction with Toyobo-KF, an activated carbon fiber. Toyobo-KF is a newly applied MSPD sorbent, and it is followed by reversed-phase high-performance liquid chromatography (HPLC) with a photodiode array detector. The resulting analytical performance parameters [recoveries of spiked DDTs (0.1, 0.2, and 0.4 µg/g) ≥ 81%, with relative standard deviations of ≤ 8% ( n  = 5), and quantitation limits ≤ 0.03 µg/g], with minimal handling and cost-efficiency, indicate that the present MSPD-HPLC method may be a useful tool for routine monitoring of DDT contamination in meat.

Separating DDTs in Edible Animal Fats Using Matrix Solid-Phase Dispersion Extraction with Activated Carbon Filter, Toyobo-KF