Investigation on organochlorine pesticides pollution in soil of typical area in Leizhou peninsula

74 topsoil samples and 4 soil profile samples were collected from typical area of Leizhou peninsula. The residues and distribution character of organochlorine pesticides in the soils were measured by gas chromatography. The result showed detectable rate of organochlorine pesticides was 100%. The residual contents of ∑HCH and ∑DDT was arange of nd～65.93 μg·kg-1 and 0.04～ 52.00 μg·kg-1 respectively. Compared to the reference data of both here and abroad, the residues in soils of Leizhou peninsula was lower than those in other areas. Based on the residues of 17 kinds of organochlorine pesticides in soil, the top 5 kinds component was P,P'-DDE, β-HCH, chlorthiepin sulfate, chlorthiepin Ⅱ and aldrin respectively. Based on the residues of organochlorine pesticides in soil of different utilization style, the order was pot gardenpaddy fieldfruit gardensugarcane soil. Coming along depth in soil pro- file, the residues of organochlorine pesticides was downtrend, and those were highter in plow layer (0~20 cm) than in below layer.