development of chromatogram

例句：

1. 1. The scientist analyzed the sample using a chromatogram to determine its composition.
   科学家使用色谱图分析样本以确定其组成。
2. 2.The research team developed a new method for producing high-quality chromatograms.
   研究团队开发了一种新的方法来生产高质量的色谱图。
3. 3.The chromatogram showed that the sample contained trace amounts of heavy metals.
   色谱图显示样本含有微量重金属。