作者aspiren (谁能教我质谱相关东西)
看板Biotech
标题[求救] 请问浓度稀释
时间Mon Aug 24 02:45:22 2009
最近在接触HPLC的东但这些实验的学理实在是离自己来久了
所以有些基本的问题都忘了
以下有一个基本的问题想请各位大大不吝解答..
An average of 1.5ml sample, sample(1ml) was spiked with
1.5ng/ML internal standard, and concentrated 40-fold under
a gentle nitrogen stream without any pretreatment.
Then 20ul of concentrate solution were directly injected into the sample loop.
The result of HPLC measurment was 255.1 pg/mL.
以上为题目, 若回推sample的真正浓度要如何计算??
..谢谢各位大大的解惑
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