I want to thank your team (Jeff) for finding a new writer when you were unable to reach my existing writer to revise my paper. I appreciate your professionalism and efforts. Thanks
Report (any type)/Brief report
22/09/2021
You divide the area of each peak by the total area of all the peaks and multiply by 100 %.
Each component in the mixture causes the same response in the detector.
So, we can use the areas under the curves to calculate the of each component.
The formula for the area of a peak is:
##”Area” = “height” × “width at half-height” = h×w_(1/2)##
##”Mole % A” = “area of Peak A”https://studydaddy.com/”total area” × 100%##
Here is a typical chromatogram of a mixture of two components, ##1## and ##2##.
##”Peak 1″## has a height of ##”34 mm”## and a width at half-height of ##”15 mm”##.
##”Peak 2″## has a height of ##”41.5 mm”## and a width at half-height of ##”16 mm”##.
##”Peak 1 area = 34 mm × 15 mm = 510 mm”^2##
##”Peak 2 area = 41.5 mm × 16 mm = 664 mm”^2##
##”Total area = (510 + 664) mm^2 = 1174 mm”^2##
##”Mole % 1″ = (510 color(red)(cancel(color(black)(“mm”^2))))/(1174 color(red)(cancel(color(black)(“mm”^2)))) × 100 % = 43.4 %##
##”Mole % 2″ = (664 color(red)(cancel(color(black)(“mm”^2))))/(1174 color(red)(cancel(color(black)(“mm”^2)))) × 100 % = 56.6 %##
Note: If you have a solvent peak and impurity peaks as well as ##”Peaks 1″## and ##2##, you can ignore them and still use just ##”Peaks 1″## and ##2## in your calculation.
Many modern gas chromatographs calculate and report the areas of the peaks in arbitrary units.
If your instrument had reported ##”Peak 1 = 117.4856″## and ##”Peak 2 = 153.1145″##, you would have calculated:
##”Total area = 117.4856 + 153.1146 = 270.6002″##
##”Mole % 1″ = 117.4856/270.6002 × 100 % = 43.4 %##
##”Mole % 2″ = 153.1146/270.6002 × 100 % = 56.6 %##
Show more
I want to thank your team (Jeff) for finding a new writer when you were unable to reach my existing writer to revise my paper. I appreciate your professionalism and efforts. Thanks
Delivering a high-quality product at a reasonable price is not enough anymore.
That’s why we have developed 5 beneficial guarantees that will make your experience with our service enjoyable, easy, and safe.
You have to be 100% sure of the quality of your product to give a money-back guarantee. This describes us perfectly. Make sure that this guarantee is totally transparent.
Read moreEach paper is composed from scratch, according to your instructions. It is then checked by our plagiarism-detection software. There is no gap where plagiarism could squeeze in.
Read moreThanks to our free revisions, there is no way for you to be unsatisfied. We will work on your paper until you are completely happy with the result.
Read moreYour email is safe, as we store it according to international data protection rules. Your bank details are secure, as we use only reliable payment systems.
Read moreBy sending us your money, you buy the service we provide. Check out our terms and conditions if you prefer business talks to be laid out in official language.
Read more