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 8, Problem 8.7QAP
Interpretation Introduction
Interpretation:
A continuous and a discrete atomizer used in atomic spectrometry should be named and the difference in output signals for each from a spectrometer should be determined.
Concept introduction:
Spectral lines are lines which help in identifying the atoms and molecules. These are a result of absorption or emission of light in a comparatively narrower frequency range compared to the frequencies nearby.
Atomization refers to the separation of substance particles into separate molecules because of high-temperature treatment and breaking of these molecules into atoms.
Expert Solution & Answer
Trending nowThis is a popular solution!
Students have asked these similar questions
What are the differences between a mass spectrometer and a IR spectrometer?
When do you need to blank a spectrophotometer (Spec 20)?
a.After the wavelength is changed.
b.After completing all data collection.
c.Before running a set of samples.
d.Between each sample, even if the wavelength remains the same.
Which of the the following is false regarding spectrophotometry?
A. The concentration of a sample increases with path length of the curvette or sample holder since the absorbance increases
B. when absorbance increases, transmittance decreases
C.The absorbance coefficient depend on wavelength of light and type of sample.
Chapter 8 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
- 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_forwardwhich of the following statements is incorrect? A. a conventional mass spectrometer does not use a spectrophotometric detectorB. a conventional mass spectrometer does not always require high purity samplesC. a mass spectrum shows no signals due to uncharged speciesD. a conventional mass spectrometer uses high energy UV radiationarrow_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_forward
- What is the sample schematic drawing of double beam UV Visible spectrometer and put a label and its functionarrow_forwardBigger size sample would result to better quality spectra compared to smaller sample with small size in ATR-FITR. True Falsearrow_forwardWhat technique(s) in spectrophotometry would use to determine the identity of matter? A. Qualitative b. Quantative c. Any technique is usefularrow_forward
- In a clinical analysis laboratory, the level of sodium in the blood is determined by atomic emission spectrometry. The method uses lithium as an internal standard, since the sample treatment is very complex and can cause ion losses. Also, the lithium signal does not interfere with that of sodium. The table below shows the results obtained after measuring different sodium standards to which a constant concentration of lithium (100 mM) has been added. Na concentration (mM) Na signal (UA) Li signal (UA) 0 0 0,180 20 0,036 0,220 50 0,066 0,160 100 0,125 0,190 150 0,200 0,210 200 0,315 0,250 a) Calculate the calibration line corresponding to the internal standard method. b) A blood sample was analyzed with said method and the following signals were obtained: 0.197 AU for sodium and 0.23 AU for lithium. What was the sodium concentration of the tested blood?arrow_forwardA solution with a known concentration equal to 3.4 mM gave an absorbance reading of 0.820 in a spectrophotometer. Assuming that there is a linear relationship between concentration and absorbance up to a concentration of 4.0 mM, what would the absorbance reading be for a solution with a concentration 2.2 mM?arrow_forwardWhich of the the following is false regarding spectrophotometry? A. The concentration of a sample increaes with the path length of the curvette or sample holder since the absorbance increases B. When absorbance increases, transmittance decreases C. The absorption coefficient depends on wavelength of light and type of sample D. Materials with higher absorption coefficients more readily absorb light. E. The lambda max of a red sample is at a shorter wavelength than the lambda max of a blue samplearrow_forward
- This is the result of an experiment in a spectrophotometer. please explain how the 595 nm was obtained and what is the implication of that result? thanksarrow_forwardA solution with a known concentration equal to 3.4 mM gave an absorbance reading of 0.820 in a spectrophotometer. Assuming that there isa linear relationship between concentration and absorbance up to a concentration of 4.0 mM, what would the absorbance reading be for asolution with a concentration 1.5 mM?arrow_forwardIndicate the relationship of proportionality that exists between: a) concentration and absorbance b) absorbance and transmittancearrow_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
Principles of Instrumental Analysis
Chemistry
ISBN:9781305577213
Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:Cengage Learning