When using HPLC for analysis, the retention time sometimes drifts and sometimes changes rapidly. What is the reason? How to solve? What should be paid attention to in the selection of capillary columns in color-mass spectrometry? What is the cause of peak tailing or double peaks in liquid chromatography? From which aspects can we simply determine the thermal stability of the capillary column? Why does the glass bushing in the injector affect the chromatographic behavior? What is the main reason for non-linear shunt during capillary chromatography split injection?
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