The gradient elution is reasonable when the retention time is 2.3 times after the appearance of prominent peak with initial mobile phase acetonitrile-water (40:60).
用初始流动相乙腈-水(40：6 0)洗脱至主峰出峰保留时间的2.3倍时开始进行梯度洗脱比较合理。
2
The effects of applied voltage, retention time and initial concentration on decomposition efficiency were studied and the decomposition products of ammonia were analyzed.
研究了施加电压、停留时间、初始浓度对臭味气体分解率的影响 ，并对氨的分解产物进行了初步分析。
3
Conclusion Solid-compression process could obtain high initial and retention strength PLLA which could fit for the general bone internal fixation.