借人气求助：有没有姐妹懂HPLC这个机器的

阳光下的风车

请高人解答，ISTD (interner Standard)应该怎么计算啊？找了半天，找到个德语的解释，看得云里雾里的，德国人就是喜欢把问题复杂化，而且老说不到重点上。

先谢谢大家了！

阳光下的风车

太感谢MM了，我再研究下。

ds2009

sorry I can not write in chinese. I think what you need to do is to make a calibration.

e.g. you want to determine A from a mixture, then prepare a series of A solution with different concentration, like: 20ppm, 40ppm and 80ppm. and measure those samples. You will find the relationship beteen the adsorption intensity (if it is UV detector)and the concentration, which should be linear. Attention: when the conc. is too high, the linear relationship will break down. So it´s important to keep the concentration under the linear area.

I hope you can understand what I said.
Good luck.

ds2009

you can search-- how to make a calibration with HPLC, I´m sure you will find a short and understandable description.

阳光下的风车

谢谢了Scheuerin 和ds2009，你们的建议非常有用，我准备周末好好研究下，同时，我也把德语的材料打印带回来了，双管齐下，希望这两天能补上这一课。