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Determination of pesticide residues in food with a 6% cyanopropylphenyl capillary column.

A small-diameter 6% cyanopropylphenyl column is studied for its suitability for determining pesticides in food. Repeatability and linearity are satisfactory, and the column is capable of separating residue combinations that are known not to separate on methyl silicone columns. At 150 degrees C or 130 degrees C, the column satisfactorily separates five by-products of tecnazene, a growth regulator and sprout suppressant found in potatoes, and four by-products of quintozene, a soil and seed fungicide found in peanut products.