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

将聚四氟乙烯树脂在常温下用模法后再经温结制。

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.

采用样弹，将样品用硝酸-过氧化氢或氯酸-过氧化氢解后，用ICP-AES法对汞砷铅连续测定。