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Trailing, fork peaks.
The sample is injected, the sample is vaporized at the inlet, then enters the HPLC column, and then enters the detector to form a chromatographic peak. If the injection speed is fast, the peak shape of the chromatographic peak will also look good. If you slowly inject the sample, the sample will enter the HPLC column in batches. The detector will run out of a very bad peak shape. Of course, it is not only unsightly, but also has a certain influence on the integral.
Fast injection is like a military training run queue. The feeling of a row of people is neat and tidy. When the end is over, it will soon pass. You said that the slow injection and intermittent injections are like a group of people running loosely and pulling a half-kilometer. After crossing the finish line, it will take three to five minutes, and the peak will definitely not be seen.