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Residues of some organochlorine insecticides α-BHC, γ-BHC, heptachlor and heptachlor epoxide of field soils and vegetables in Jeju island were investigated from october, 1979 to november, 1980. Residues in soil ranged in n.d-0.967 (aver.; 0.391) ppm for α-BHC, n.d-0.590 (aver.; 0.218) ppm for γ-BHC, n.d-0.819 (aver.; 0.163) ppm for heptachlor, and n.d.-0.256 (aver.; 0.034)ppm for heptachlor epoxide. Average residue: Levels in cabbage were 0.002ppm for α-BHC, 0.001ppm for γ-BHC, 0.002 ppm for heptachlor, and 0.001pprn for heptachlor epoxide. The levels of the same chemicals were 0.012ppm, 0.004ppm, 0.003ppm and 0.011ppm on carrot, and 0.014 ppm, 0.007ppm, 0.002ppm and trace on garlic, respectively.
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