奎屯河流域的土壤样品中HCH残留量分析研究

his paper studies the distribution of HCH in soil samples of Kuitun River Basin in Xinjiang area using a gas chromatography(GC) equipped with a electron capture detector(ECD). The results show that the highest concentration of HCH can be found in Tianbei New District Grapery. Concentration in the cotton field located in the 11Km north of Guertu Town is the next. Then the concentrations from the highness to the low lever are the derelict land in the west of the 125th Regiment, the cotton field located in the 6Km north of Guertu town and the Sulaimankesitao Forest Farm. The concentration of HCH decreased with the depth. While in the 40cm deep soils of the cotton field located in the 11Km north of Guertu Town and 80～100cm deep of the derelict land in the west of the 125th Regiment, the concentrations of HCH are abnormally high. Perhaps the physical and chemical features of soil are the most important factors influencing the vertical distribution of HCH. The concentration of γ-HCH is the highest among the HCH isomers. Using Lindane powder as the substitute of HCH is maybe the main reason. The contamination of HCH in Tianbei New District Grapery is severous .The amount of HCH in Tianbei New District Grapery reaches 2415.46μg/kg, which has exceeded the index (≤500μg/kg) of the soil quality of nuisanceless agricultural products.