高纯氮

方法：采用顶空GC方法测定注射用银杏叶（冻干）有机溶剂残留量，使用HP5固定相的开口毛细管柱；以高纯氮为载气；

Methods : The contents of residual solvents in Ginkgo biloba Leaves for injection were determined by headspace GC on HP 5 column , with FID detector , high purity nitrogen as the carries gas .

高纯氮设备所产氮气纯度大致相同，但对其他一些要求，如氮气压力、液氮产量、是否同时生产一部分氧气等却差异甚大。

The purity of nitrogen produced by high purity nitrogen plants is approximately same , but other specifications specified by individual nitrogen plants , such as nitrogen pressure , LN 2 output , partial production of oxygen at the same time are considerably different .

高纯氮设备流程设计综述

Process design of high-purity nitrogen plants-an overview

采用一氧化碳转换炉和特殊的冷箱内流程组织，可以生产纯度为999999%以上的高纯氮。

The high-purity nitrogen ( 99.9999 % ) can be produced by using CO converter and specific process system within the cold box .