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Mass Spectrometry Interferences

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Questions and Answers

What is the main advantage of CE-MS over other analytical techniques?

Ability to analyze large sample volumes

Low cost of analysis

High resolving power and sensitivity (correct)

Simple instrument setup

What is the primary function of the ICP torch in ICP-MS?

To amplify the signal from the sample

To serve as an atomizer and ionizer (correct)

To detect the ions produced by the sample

To separate ions based on their mass-to-charge ratio

What is the result of the spectra produced by ICP-MS?

A simple series of isotope peaks for each element (correct)

No peaks, only a baseline signal

A complex series of peaks for each element

A single peak for all elements

What is the purpose of the differentially pumped interface in ICP-MS?

To sample the metal ions produced by the ICP torch Signup and view all the answers

What is a common application of CE-MS?

Analysis of pharmaceutical drugs Signup and view all the answers

What is the purpose of the negative voltage in ICP-MS?

To separate positive ions from electrons and molecular species Signup and view all the answers

What is the main advantage of CE-MS for biological studies?

High resolving power and sensitivity for protein and peptide analysis Signup and view all the answers

What is the role of the mass analyzer in ICP-MS?

To separate ions based on their mass-to-charge ratio Signup and view all the answers

What is a characteristic of the spectra produced by ICP-MS?

Simple and easy to interpret Signup and view all the answers

What is the main benefit of using CE-MS for biomolecule analysis?