Principles of Instrumental Analysis
7th Edition
ISBN: 9781305577213
Author: Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 11, Problem 11.11QAP
Interpretation Introduction
Interpretation:
The process of glow-discharge mass spectrometry and its advantages over other processes needs to be explained.
Concept introduction:
Glow discharge process of atomization for the purpose of analysis in a mass spectrometer is one of the multiple such processes, each with its own capabilities and limits of analysis.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
What are the differences between a mass spectrometer and a IR spectrometer?
Give an advantage and disadvantage of the spectra obtained from an electron impact(EI) mass spectrometer?
3. Bromine, Br2
Consider the fragmentation of diatomic compounds. For example, 158Br2 will give a
signal at 79 for 79Br and one at 79 for Br. Br has two naturally occurring isotopes, the
79 isotope and the 81 isotope. Determine the origin (formula) of each of the signals for
the mass spectrum of molecular bromine. Example, 158Br2 is equal to 79Br79Br.
Relative Abundance
90
80
70
60
50
30
20
10
D
79
81
158
160
162
62
Mass (amu)
Figure 4. Mass Spectrum of Br.
Mass Number
Measurement (cm) Abundance
Formula
Calculations
XXXX
XXXX
XXXX
XXXX
XXXX
XXXX
Chapter 11 Solutions
Principles of Instrumental Analysis
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.Similar questions
- Explain why the count rate from the detector straight on from the source is much greater than the detector situated in a 45 degree deflection position.What can be deduced from this observation about the structure of the atom and the properties of the nucleus of goldarrow_forwardPlease don't provide handwriting solutionarrow_forwardChemistry Instrumental Analysis Class The experiment is OES: Cleaning Validation of removal of pharmaceutical drugs and calibration standards by fluoresence spectroscopy - Why the instrument use two detectors and monochromators? What type of monochromators are used in our instrument? - Do you think that a similar experiment can be prepared for the analysis of naproxen and benzoic acid? Explain.arrow_forward
- True or False 1. Photodiode arrays are devices within the instrument that help amplify the signal of a sample. 2. Atomic spectroscopy requires the atomization of a sample, which involves nebulization and eventually volatilization to form an elemental vapor. 3. Organic compounds are normally analyzed in atomic spectroscopy despite their small electronic transition range.arrow_forwardIf a TOF mass spectrometer needs to scan an m/z of 600, what is the speed of this ion if it is accelerated through 4000 volts? How long will this ion (at the speed calculated) take to drift 2.00 m through the spectrometer? How many mass spectra can be taken each second if a new cycle begins each time this ion reaches the detector?arrow_forwardThe maximum number of spectra that can be recorded per second by ToF-MS is limited by the time taken by the slowest ions to go from the source to the detector. If the slowest ion took 45.6 microsecond to travel, at what frequency could you record spectra if a new extraction cycle were begun each time this heaviest ion reached the detector? 30000 spectra/s 10000 spectra/s 11000 spectra/s 500 spectra/s 22000 spectra/sarrow_forward
- Bromine has two naturally occuring isotopes, Br-79 and Br-81, approximately 50% of each. Bromomethane will contain approximately 50% Br-79 and 50% Br-81. The mass spectrum peak for methane containing Br-79 will be referred to as the M+ (molecular ion) peak, and the peak for Br-81 will be called the M+2 peak, as Br-81 weighs two more amu than Br-79. What will be the locations of the two bromomethane peaks on the mass spectrum and what will be the approximate ratio of their heights?arrow_forwardExplain ICP-MS (Inductively Couple Plasma -Mass Spectrometry ES) method and how it work on mineralsarrow_forwardChemistry Common Isotopes and Mass spectrum of element Mo are given below Most common isotopes: Mo-98; Mo-96 Mo-95; Mo-92; Mo-97 ; Mo-100; Mo-94 Calculate the average atomic mass of Mo How the MS determined the relative intensity (Scale of 100) and Isotope abundance (%)? Why absolute intensity was not used? Can detector sensitivity, ICPMS temperature influence the relative intensity? Explainarrow_forward
- 2. In a mass spectrum of a compound, the following data (intensity) is given. M+ = 80, M+ +1 = 8.8, M+ +2 = 26. This compound will have carbons and will contain a a. 8, sulfur b. 9, silicon c. 10, chlorine d. 11, brominearrow_forwardAn exploration of any one application of Spectroscopy (Absorption or Emission), Mass Spectrometry (MS) - (ANY kind of mass spec) Pick one location/project/bit of research where the data is used and explore. Discuss on what is measured (what instrument) and why and how. You don't have to fully teach the instrument but spend a paragraph giving the very basics of what is measured and how. And discuss the application you discovered - just find a place the measurement is used and explain what they do - what they measure and when it tells them.arrow_forwardWhat are some of the advantages and limitations of mass spectroscopy?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Principles of Instrumental AnalysisChemistryISBN:9781305577213Author:Douglas A. Skoog, F. James Holler, Stanley R. CrouchPublisher:Cengage Learning
General Chemistry - Standalone book (MindTap Cour...ChemistryISBN:9781305580343Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; DarrellPublisher:Cengage Learning
Principles of Modern ChemistryChemistryISBN:9781305079113Author:David W. Oxtoby, H. Pat Gillis, Laurie J. ButlerPublisher:Cengage Learning
Organic Chemistry: A Guided InquiryChemistryISBN:9780618974122Author:Andrei StraumanisPublisher:Cengage Learning
Principles of Instrumental Analysis
Chemistry
ISBN:9781305577213
Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:Cengage Learning
General Chemistry - Standalone book (MindTap Cour...
Chemistry
ISBN:9781305580343
Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Publisher:Cengage Learning
Principles of Modern Chemistry
Chemistry
ISBN:9781305079113
Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Publisher:Cengage Learning
Organic Chemistry: A Guided Inquiry
Chemistry
ISBN:9780618974122
Author:Andrei Straumanis
Publisher:Cengage Learning