1. 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压法成型后再经高温烧结制成。
2. 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.
   采用高压溶样弹，将样品用硝酸-过氧化氢或高氯酸-过氧化氢溶解后，用ICP-AES法对汞砷铅连续测定。

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