会影响流速,压力,而导致峰形出现一些偏差 will affect the flow rate and pressure and cause your choromatogram having error or bias. the most importatn if the bubbles goes in will stick on your detector (UV-Vis or PDA), it is be very hard to remove the bubbles from detector even a specialist technician...so mobile phase must degas and when inject your sample u have to check the syringe very carefully