What is the difference between ESI-MS/MS and LC-MS/MS?

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Karen A. Darbinyan Popular answer

Hello, ESI means electrospray ionisation so ESI is ionisation source so ESI-MS/MS means LC/MS/MS with ESI electrospray ionization source.

LS-MS/MS means liquid cromatograph with triple quad masspectrometer. So if you se LC/MS/MS it system without mention of ionization source.

LC/MS/MS ionisation source can be.

1. EI electron ionization

2. APCI atmospheric preasure chemical ionization

3. ESI electrospray ionization

Hope this info will help you.

Adam B Shapiro

Review articles on mass spec techniques for this purpose:

Article Mass spectrometry-based strategies for characterization of h...

Article Britton LM, Gonzales-Cope M, Zee BM, Garcia BA. Breaking the...

Karen A. Darbinyan

Mahmood Dalhat

Thank you for this information Dr. Darbinyan. This will help in narrowing my search for better method of my study.

Thank you Dr. Shapiro for these wonderful articles, I am grateful. They indeed contain the basic understanding of LC-MS and its role in protein modification.