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采用气相色谱法测定林丹在土壤中的残留动态。在自然状况下，林丹在土壤中的降解很快，２０ｄ后，灌淤土和灰漠土中降解率分别为３９９１％与４１２２％，两个月后降解分别达９９５９％和９９６９％。棉花种子及油菜种子经林丹拌种后，在土壤中的残留量很低，与不拌种的土壤残留相近。用干种子重量的０１５％林丹拌种，拌种棉田土壤中林丹的平均残留量为０００４２ｍｇ／ｋｇ，不拌种土壤中为０００２７ｍｇ／ｋｇ；油菜种子拌种土壤中平均残留量为０００３８ｍｇ／ｋｇ，不拌种的土壤中为０００１０ｍｇ／ｋｇ。棉花、油菜采用林丹拌种对土壤的污染是微不足道的。试验结果还表明，林丹在土壤中的残留量随用药浓度的提高而增加。
Determination of residual activity of lindane in soil by gas chromatography. Under natural conditions, lindane degraded rapidly in soil. After 20 days, the degradation rates in irrigated soil and gray desert soil were 3991% and 4122%, respectively, and reached 9959% after two months. And 9969%. Cotton seed and rapeseed seed dressing by lindane, the residue in the soil is very low, and the soil is not mixed with seed dressing similar. The average residue of lindane in cotton seed dressing was 00042mg / kg and 00027mg / kg in non-dressing seed with the average seed weight of 015% The amount of 0 0038mg / kg, not mixed seed in the soil 0 0010mg / kg. Cotton, rape using lindane seed dressing on the soil pollution is negligible. The test results also show that lindane residues in the soil with the drug concentration increased.