Can i determine the peak area by mannually calculating

[seamoro]

Can i determine the peak area by mannually calculating the peak area? i have some old data with no peak area...can i calculate from the chromtogram? how do i do this? thank you

[Mattias]

In the old days peak areas were determined by cutting out the peak from the printed chromatogram. The peaks were then weighed.

[tom jupille]

You can also approximate it by triangulation, but Mattias' suggestion is better.

[Hollow]

maybe you can also use the peak height for your purpose?