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
Question
Chapter 17, Problem 17.7QAP
Interpretation Introduction
Interpretation:
The description of origins of photo-acoustic IR spectra and the types of samples for the photo-acoustic measurements should be determined.
Concept introduction:
Infra-red spectroscopy is an important tool used to determine the structures of the biochemical species and the organic compounds. After the absorption of IR radiation by the molecules, they would show the emission characteristics at the heating.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
Carbon monoxide is another common poison found in the forensic laboratory. Explain how UV-visible spectrophotometry is applied to quantify carbon monoxide in blood samples.
Plasma emission spectroscopy can be used to determine the concentration of elements such as iron or zinc in pharmaceutical preparations. with the aid of suitable diagrams, outline the principles behind this technique and explain how it can be used to provide qualitative and quantitative information about these elements.
Compare the advantages and disadvantages of atomic absorption and inductively coupled plasma Atomic emission spectroscopy.
Chapter 17 Solutions
Principles of Instrumental Analysis
Knowledge Booster
Similar questions
- 3. Regions of the electromagnetic (e/m) spectrum and corresponding molecular processes. (a) Sketch the e/m spectrum like depicted in figure below. For your sketch, use the following units (all together in one plot): wavelength, frequency, wavenumbers, and energy. (b) What are the molecular processes that can be studied by the different types of e/m radiation? Name three (3) processes. (A) Radio waves (B) Micro- waves (C) (D) Infrared Visible radiation light Ultraviolet m X-rays (F) Gamma-raysarrow_forwardAssume that the first line of the rotational spectrum (J = 0 → J = 1) of CO is 3.8424 cm-1. Calculate the length of the CO bond in picometer (10-12 m). To mark the answer, neglect the fractional part and do not write the unit. Information: mass of carbon: 12 c.u. mass of oxygen: 16 c.u. h = 6,6261 x 10-34 J.s π = 3,1416 c = 2,9979 x108 m.s-1 N = 6,0221 x 1023 mol-1arrow_forwardExplain why standard solutions are often prepared in the analyses of both atomic absorption and emission spectroscopies.arrow_forward
- Discuss how X-rays suitable for macromolecular studies are generated “in-house”. What are the advantages of using synchrotron radiation for macromolecular studies?arrow_forwardClearly describe the differences between fluorescence and phosphorescence. In your answer address the electronic states that are involved, the intensity, the wavelength and time scale of the specific emission process as well as what causes the difference in intensity, wavelength and time scale.arrow_forwardhow do you relate structure to fluorescence? Give at least three structural characteristics of a fluorescent molecule. (Discuss the presence of functional groups, the effect of substituents and rigidity.)arrow_forward
- What is the significance of whether the fluorescent substance in fluorescent tubes has a short or long phosphorescence?arrow_forwardDescribe how the attenuation of X-rays correlate with i) their photon energy, ii) the chemical make-up of the transmission material, and iii) the distance they have travelled through the material.arrow_forwardWhat are the analytical applications of Atomic Fluorescence Spectroscopy?arrow_forward
- The space immediately surrounding stars, the circumstellar space, is significantly warmer because stars are very intense black-body emitters with temperatures of several thousand kelvin. Discuss how such factors as cloud temperature, particle density, and particle velocity may affect the rotational spectrum of CO in an interstellar cloud. What new features in the spectrum of CO can be observed in gas ejected from and still near a star with temperatures of about 1000 K, relative to gas in a cloud with temperature of about 10 K? Explain how these features may be used to distinguish between circumstellar and interstellar material on the basis of the rotational spectrum of CO.arrow_forwardAssuming there are three special isotopes mixture of cadmium, Cd110, Cd112 and Cd114. If He-Cd laser is operating at temperature 25°C at wavelength of 450 nm. Find the Doppler broadening for these three isotopes.arrow_forward5. Atomic emission spectroscopy relies on emission of light by the analyte. An ICP plasma has a temperature of 6200 K for a particular instrument. Using the Boltzmann equation, describe the relative intensities for a signal with a wavelength of 300 nm versus a signal with a wavelength of 600 nm.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 LearningChemistry for Engineering StudentsChemistryISBN:9781285199023Author:Lawrence S. Brown, Tom HolmePublisher:Cengage Learning
- Organic ChemistryChemistryISBN:9781305580350Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. FootePublisher:Cengage LearningPrinciples of Modern ChemistryChemistryISBN:9781305079113Author:David W. Oxtoby, H. Pat Gillis, Laurie J. ButlerPublisher:Cengage Learning
Principles of Instrumental Analysis
Chemistry
ISBN:9781305577213
Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:Cengage Learning
Chemistry for Engineering Students
Chemistry
ISBN:9781285199023
Author:Lawrence S. Brown, Tom Holme
Publisher:Cengage Learning
Organic Chemistry
Chemistry
ISBN:9781305580350
Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote
Publisher:Cengage Learning
Principles of Modern Chemistry
Chemistry
ISBN:9781305079113
Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Publisher:Cengage Learning