Method: Organochlorine residuals was determined by GC,the contents of Pb,Cd,Cr,Cu and As were determined by IPC,and the content of Hg by AFS.

• 方法:采用气相色谱法测定有机氯农药残留量,用ICP法测定铅、镉、铜、铬、砷含量,用原子荧光光谱法测定汞含量。