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91福利片导航网的適用範圍和用途-上海91福利在线观看分析儀器有限公司

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91福利片导航网的適用範圍和用途

更新時間：2010-10-27點擊次數：7017

91福利片导航网的適用範圍和用途

　　原則上講，凡是分子質量不大，有一定揮發性，在汽化或柱溫情況下不分解的物質，或分子量大，但可以通過各處理, 衍生為易揮發的化合物也可以進行氣相色譜分析。具體到目前商品91福利片导航网來講，一般GC適用於佛點低於350℃的分析組，高溫GC可以分析組分的佛點不超過500℃。

       在儀器分析方法中，色譜分析可同時進行分離和檢測分析的特點與其它儀器分析方法相比有*的優點。由於它分離效率特別高，對於多組分的複雜混合物，同分異構體和旋光異構體以及痕量組分的樣品分析幾乎是*的分析手段。目前隨著檢測技術，樣品處理技術，微電子技術的不斷發展，GC檢測限已從zui初的10-2擴展到10-13級甚至某些分析可達10-15數量級。但是見於目前一般和氣相色譜配套的商品常規檢測器, 還不能根據被分析組分的構成給出特征信號，用常規GC做定性分析還受到一定限製，對於這類問題還需要采用多種儀器分析聯用配合印證。目前用於在線聯用的儀器分析方法主要有：GC/MS，GC/FIR，LC/MS，LC/NMR等。

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