The results indicated that HCH isomers,DDT and its metabolites could be detected in various environments and preys of night heron,although the organochlorined chemicals were banned for almost 20 years.

• 结果表明 ；在有机氯农药禁用近 2 0年后 ；六六六的异构体和滴滴涕及其衍生物均能在环境中和夜鹭食物中有不同程度的检出 .