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qwqwe2000

新虫 (初入文坛)

[求助] 气相色谱阴性对照出峰,求指点

分析仪器岛津GC21010,安捷伦DB—WAX柱,FID检测器,分析挥发性脂肪酸。进样为自动进样,样品针每天都用丙酮清洗。机器运行时间久了以后,进蒸馏水也会出峰,且对应样品各有机酸的出峰时间;直接进空气则不会出峰。求高手指点是不是那一部分污染了?不胜感激。
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milk88621

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引用回帖:
1楼: Originally posted by qwqwe2000 at 2014-07-14 15:39:59
分析仪器岛津GC21010,安捷伦DB—WAX柱,FID检测器,分析挥发性脂肪酸。进样为自动进样,样品针每天都用丙酮清洗。机器运行时间久了以后,进蒸馏水也会出峰,且对应样品各有机酸的出峰时间;直接进空气则不会出峰。 ...

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biotree123

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