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tingzai0116

木虫 (正式写手)

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6楼: Originally posted by duliuhui at 2015-02-26 15:28:32
必须验证回收率合格。个人感觉还是应该尽量想办法溶解。以下是摘录:
--有机残留溶剂检查方法合理性评价的几点考虑(CDE电子刊物)
无论是直接进样或顶空进样,都应尽量使供试液中的样品完全溶解,否则当残留溶剂 ...

尽管这是一篇CDE的电子刊物,可还是觉得,通过加热样品使样品溶解会不会使残留溶剂挥发,造成测定误差?
11楼2015-03-03 16:49:26
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duliuhui

金虫 (正式写手)

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11楼: Originally posted by tingzai0116 at 2015-03-03 16:49:26
尽管这是一篇CDE的电子刊物,可还是觉得,通过加热样品使样品溶解会不会使残留溶剂挥发,造成测定误差?...

对于顶空法,加热是没有问题的,本身已密封,另外该法本来就是加热使达到气液平衡的。直接进样法不允许加热,以避免低沸点溶剂的挥发损失。
12楼2015-03-09 08:40:33
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