时间用长了,柱效下降,保留也就弱了。另外 ISO 17075-2:2017里有这么一句话:Ion-exchange chromatograph, with UV detector or high performance liquid chromatograph (HPLC) with anion-exchange column and UV detector. It is recommended a photo diode array detector (DAD).也就是可以用离子色谱加UV或者DAD这类检测器作为检测。