Electrospray ionization Study guides, Class notes & Summaries
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CMMB 461 FINAL Question and answers rated A+ 2024
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CMMB 461 FINAL Question and answers rated A+ 2024 
Basic components of mass spec - correct answer 1. Ion source 
2. mass analyzer 
3. detector 
 
Two main types of ionization - correct answer 1. Electrospray ionization 
2. MALDI 
 
Electrospray Ionization (ES) - correct answer Peptide solution is passed through a narrow metal needle with a high electrical potential resulting in highly charged droplets of protonated peptide ions. 
 
Matrix-assisted laser desorption ionization (MALDI) - corre...
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CMMB 461 FINAL Question and answers 100% correct
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CMMB 461 FINAL Question and answers 100% correct CMMB 461 FINAL 
 
 
Basic components of mass spec - correct answer 1. Ion source 
2. mass analyzer 
3. detector 
 
Two main types of ionization - correct answer 1. Electrospray ionization 
2. MALDI 
 
Electrospray Ionization (ES) - correct answer Peptide solution is passed through a narrow metal needle with a high electrical potential resulting in highly charged droplets of protonated peptide ions. 
 
Matrix-assisted laser desorption ionization...
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Chem 420 Exam Questions And Answers (Verified And Updated)
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Chem 420 Exam Questions And Answers 
(Verified And Updated) 
Three types of electrical domains? - answerAnalog Signals - magnitude of voltage, current, 
charge, or power; continuous in both amplitude and time 
Time-domain Signals - time relationship of signal fluctuations; frequency, pulse width, phase 
Digital Info - Data encoded in discrete levels; great accuracy and precision 
Where does noise come from? (2 types) - answerChemical noise: temperature, pressure, 
humidity, fumes, etc 
Instrumen...
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AQA A LEVEL CHEMISTRY PAPER 1 EXAM QUESTIONS AND ANSWERS
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AQA A LEVEL CHEMISTRY PAPER 1 EXAM QUESTIONS AND ANSWERS 
 
TOF steps - ANS 1) ionization 
2) acceleration 
3) ion drift 
4) detection 
5) analysis 
 
Electron impact - ANS Sample vaporize and electron gun fires high energy electrons at it which knock off 1 electron from each particle, making them 1+ ions 
NB- can knock off more than one e or break molecular ion 
 
electrospray ionization - ANS Sample dissolved in volatile solvent then injected through needle to give fine mist which i...
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Chem 233 Already Passed Exam Questions and CORRECT Answers
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mass spectrometrysorts ions based on mass/charge ratio 
ionization typeselectron ionization (EI or hard ionization) 
electrospray ionization (CI or soft ionization) 
infared spectroscopyIR 
study of interaction between matter and electromagnetic radiation (EMR, light). IR radiation 
causes different bonds to vibrate 
IR spectra OH or NH 
IR spectra >3000triple CH bond 
IR spectra <3000-CH 
IR spectra 2720O=CH
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Chem 420 Final Exam Questions And Answers (Verified And Updated)
- Exam (elaborations) • 22 pages • 2024
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Chem 420 Exam Questions And Answers 
(Verified And Updated) 
Three types of electrical domains? - answerAnalog Signals - magnitude of voltage, current, 
charge, or power; continuous in both amplitude and time 
Time-domain Signals - time relationship of signal fluctuations; frequency, pulse width, phase 
Digital Info - Data encoded in discrete levels; great accuracy and precision 
Where does noise come from? (2 types) - answerChemical noise: temperature, pressure, 
humidity, fumes, etc 
Instrumen...
-
Instrumental Analysis ACS Exam Questions And Answers Rated A+ New Update Assured Satisfaction
- Exam (elaborations) • 8 pages • 2024
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How to calculate signal to noise - Answer-S/N = mean/STDEV 
-inverse of RSD 
-STDEV: 5 (#STDEV gaussian curve) 
-STDEV: peak-to-peak noise/5 
S/N relationships - Answer--increase S/N, increase run time 
-decrease noise, increase S/N 
Beer's Law - AnswerBeer's Law Calculations - AnswerHard ionization vs soft ionization - Answer--hard: no M+ peak (or small) 
-soft: M+ peak is visible 
MS: hard ionization sources - Answer--impart high quantities of residual energy in the subject molecule 
invokin...
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Instrumental Analysis ACS Exam Questions With 100% Correct Answers
- Exam (elaborations) • 6 pages • 2024
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Instrumental Analysis ACS Exam Questions 
With 100% Correct Answers 
How to calculate signal to noise - answerS/N = mean/STDEV 
-inverse of RSD 
-STDEV: 5 (#STDEV gaussian curve) 
-STDEV: peak-to-peak noise/5 
S/N relationships - answer-increase S/N, increase run time 
-decrease noise, increase S/N 
Beer's Law - answer 
Beer's Law Calculations - answer 
Hard ionization vs soft ionization - answer-hard: no M+ peak (or small) 
-soft: M+ peak is visible 
MS: hard ionization sources - answer-impar...
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CMMB 461 FINAL with 100% correct answers
- Exam (elaborations) • 6 pages • 2024
- Available in package deal
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- $12.99
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CMMB 461 FINALBasic components of mass spec - correct answer 1. Ion source 
2. mass analyzer 
3. detector 
 
Two main types of ionization - correct answer 1. Electrospray ionization 
2. MALDI 
 
Electrospray Ionization (ES) - correct answer Peptide solution is passed through a narrow metal needle with a high electrical potential resulting in highly charged droplets of protonated peptide ions. 
 
Matrix-assisted laser desorption ionization (MALDI) - correct answer Sample is co-crystallized wi...
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AQA A-level CHEMISTRY 7405/1 AQA- A LEVEL CHEMISTRY PAPER 1 COMPILED WITH QUESTIONS AND ANSWERS UPDATED 2024 FOR REVIEW EXAM 100% A+
- Exam (elaborations) • 36 pages • 2024
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TOF steps - CORRECT ANSWER-1) ionisation 
2) acceleration 
3) ion drift 
4) detection 
5) analysis 
 
Electron impact - CORRECT ANSWER-Sample vaporised and electron gun fires high energy electrons at it which knock off 1 electron from each particle, making them 1+ ions 
NB- can knock off more than one e or break molecular ion 
 
electrospray ionization - CORRECT ANSWER-Sample dissolved in volatile solvent then injected through needle to give fine mist which is attached to positive end of high v...
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