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 Integrated peak area percentage		  New Topic  Reply to Topic
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Lisa1446

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Posted - 07/11/2013 :  5:52:39 PM  Show Profile  Edit Topic  Reply with Quote  View user's IP address  Delete Topic
Origin Ver. and Service Release (Select Help-->About Origin): Origin Pro 9.0
Operating System: Windows 7

I integrated 2 peaks in a chromatogram.
When I look at the results sheet the area percentage (AreaIntgP(%)) for those 2 peaks does not add up to 100%.
Why is that?
Does it calculate the area percentage based on the whole area even though there are no other peaks selected?

Thanks a lot!!
Edited by - Lisa1446 on 07/11/2013 5:54:40 PM

JacquelineHe

287 Posts
Posted - 07/11/2013 :  11:34:51 PM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
Hi,

You are right.The whole area includes the no peaks area.

If you set the baseline, integration is from the baseline to the curve.
If you set baseline mode to "None", it will be the same as setting "Y=0" to the baseline.

Also, you can create a user-defined baseline for your curve.


Thanks
Jacqueline
OriginLab
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Lisa1446

2 Posts
Posted - 07/12/2013 :  09:53:15 AM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
Oh I see!
Thanks a bunch for the response!

Lisa
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