回复Insm_d3c450d4发表于:2020/7/2 16:19:34悬赏金额:
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液相Alltech,之前用迪马C18柱测定有机酸,水相ph3.0,95:5甲醇,0.5mL/min,25度,然后琥珀酸的标品峰和样品峰保留时间一致,加标样品出峰重叠。因为水相比例太大,现在换成了Acclaim OA有机酸专用柱,琥珀酸标品峰保留时间比样品峰保留时间提前4分多钟,求助各位大佬,这是怎么个情况?[img=,690,516]https://ng1.17img.cn/bbsfiles/images/2019/07/201907021618226931_6560_3895609_3.png[/img][img=,690,516]https://ng1.17img.cn/bbsfiles/images/2019/07/201907021618236651_3769_3895609_3.png[/img][img=,690,516]https://ng1.17img.cn/bbsfiles/images/2019/07/201907021618250443_1606_3895609_3.png[/img][img=,690,516]https://ng1.17img.cn/bbsfiles/images/2019/07/201907021618252781_5909_3895609_3.png[/img]