Studies on the Residues of Chlorinated Organic Insecticides -3. Heptachlor residues in soil 15 years after yearly treatment of the soil insecticide in a tobacco field-

유기염소계 살충제의 잔류분에 관한 연구 -3. 담배연작토양의 Heptachlor 잔류분에 관하여-

Soil residues in a tobacco field yearly treated with a soil insecticide, Heptachlor, was analyzed by GLC equipped with electron capture detector(ECD). In addition, translocation of the heptachlor residues into two staple vegetables, radish and chinese cabbage was also studied under field conditions. The results were summarized as follows; 1. The Heptachlor residues in the soil of tobacco plots were less than 0.010 ppm. 2. The Heptachlor residues in radish and chinese cabbages cultivated in the tobacco plot were also below 0.010 ppm. 3. Amount of Heptachlor residues translocated into the vegetables were not related to the concentrations of the residues in the soil.

담배연작지의 토양중 토양살충제로 처리한 Heptachlor의 잔류분을 GLC로 분석하였다. Heptachlor의 토양중 잔류분은 모두 0.010ppm에 미달하였다. 한편 담배 연작지에 재배된 무우, 배추의 Heptachlor잔류량은 0.01 ppm이하로, 이수준은 같은 해인 3971년도 전국에서 수집, 분석한 두 채소의 Heptachlor 잔류량과 대등하였다. 무우 및 배추로 흡수, 이행하는 Hheptachlor잔류량은 토양 중 등 살충치의 농도에 비례하지 않었다.