The concentrations of hexachlorocyclohexane isomers(HCHs) in muscle,skin,liver,stomach,heart,eggs,feed and feces of chicken from a poultry farm were determined by GC-ECD.

• 用气相色谱-电子捕获器法测定了北京郊区某养鸡场不同生长期的饲养鸡的肌肉、表皮、肝脏、胃、心脏以及鸡蛋、饲料和粪便中HCH的残留浓度。