Made of shaping Polytetrafluorethylene Resin by moulding in ordinary temperature then through high heat sintering.

将聚四氟乙烯树温下模压法成型后再经高温结制成。

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.

采高压溶样弹，将样品-过氧化氢或高氯-过氧化氢溶解后，ICP-AES法对汞砷铅连续测定。