Essay
applied science - chemistry - unit 19 C part 4 section 2 - distinction level
- Institution
- PEARSON (PEARSON)
Essay of 8 pages for the course Unit 19 - Practical Chemical Analysis at PEARSON (HPLC Chromatograms)
[Show more]
2 reviews
By: cliodhnafagan97 • 7 months ago
By: cliodhnafagan97 • 7 months ago
Content preview
HPLC ChromatogramsI will be analysing different solvents used to extract a sample of physica semipinnata (rosette lichen)
against a reference.
Explain how to calculate peak area. Include an example calculation.
To calculate the peak are you must measure the heigh of the peak and multiply it by the half of the
width. it cam be represented as;
Height of peak/ hath of the width of peak
Example
Height is 15
Width is 4
The it will be
7 /2 = 3.5
3.5 is the peak area
, Reference Chromatogram.
Reference compounds
Peak number Standards for Compounds present in physcia
semipinnata
1 lecanoric acid
2 methyl-β-orcinol carboxylate
3 ethyl haematommate
4 evernic acid
5 obtusic acid
6 atranorin
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller chiam. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for £7.16. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
49160 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy revision notes and other study material for 14 years now