Sample was digested in polytetrafluorethylene sealed vesssle by nitric acid-perhydrol or high chloric acid-perhydrol, Hg As Pb were simultaneously determinated by ICP-AES.

采压溶样弹，将样酸-过化氢酸-过化氢溶解后，ICP-AES法对汞砷铅连续测定。