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 7, Problem 7.20QAP
Interpretation Introduction
Interpretation:
The basis for the detection of radiation using a transducer of silicon photodiode needs to be described.
Concept introduction:
Transducers are devices that help in conversion of energy in one form or conversion of variations like pressure, into another form like electrical signal, etc.
Expert Solution & Answer
Trending nowThis is a popular solution!
Students have asked these similar questions
An aqueous solution of a triphosphate derivative of molar mass 502 g mol-1, was prepared by dissolving 17.2 mg in enough water to make 500 cm3 of solution and a sample was transferred to a cell of length 1.00 em. The absorbance was measured as 1.011. Calculate (a) the molar absorption coefficient;(b) the transmittance. expressed as a percentage.for a solution of twice the concentration.
If you are measuring manganese (Mn) absorption using AAS, which hollow cathode lamp would you select as your source and why?
5. A 7.25x104 M solution of Potassium cyanide (KCN) has
a transmittance of 45.2% when measured in a 2 cm cell
at a wavelength of 525 nm. Calculate (a) the absorbance
of this solution; (b) the molar absorptivity of KMNO4.
Chapter 7 Solutions
Principles of Instrumental Analysis
Ch. 7 - Prob. 7.1QAPCh. 7 - Prob. 7.2QAPCh. 7 - The Wien displacement law states that the...Ch. 7 - Prob. 7.4QAPCh. 7 - Prob. 7.5QAPCh. 7 - Describe the differences and similarities between...Ch. 7 - Prob. 7.7QAPCh. 7 - Prob. 7.8QAPCh. 7 - Prob. 7.9QAPCh. 7 - Prob. 7.10QAP
Ch. 7 - Why is glass better than fused silica as a prism...Ch. 7 - Prob. 7.12QAPCh. 7 - Prob. 7.13QAPCh. 7 - Prob. 7.14QAPCh. 7 - Prob. 7.15QAPCh. 7 - Prob. 7.16QAPCh. 7 - Prob. 7.17QAPCh. 7 - Prob. 7.18QAPCh. 7 - Prob. 7.19QAPCh. 7 - Prob. 7.20QAPCh. 7 - Prob. 7.21QAPCh. 7 - Prob. 7.22QAPCh. 7 - Prob. 7.23QAPCh. 7 - Prob. 7.24QAP
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
- How do solvent, temperature, and pH affect fluorescence of fluorophore?arrow_forwardDescribe the application of AAS (Atomic Absorption Spectrophotometry) analytical methods for gold, copper and iron ore deposit evaluation which involve surface and subsurface geochemical sampling in a tropical environment.arrow_forwardHow does the Hollow Cathode Lamp work during the quantitative analysis of Iron (Fe) in Atomic Absorption Spectroscopy?arrow_forward
- A student mixed 5.00mL of 0.0020M Fe(NO3)3, 3.00mL of 0.0020M KSCN, and 3.00mL of distilled water. The mixture reacted to form a reddish solution indicating that FeSCN2+ was formed, according to the equation below. An absorbance of 0.21 was measured for this solution in a Spectrophotometer set at a wavelength of 447nm. Fe³+ (aq) + SCN (aq) FeSCN2+ (aq) A calibration curve was used to find the equilibrium concentration of the product of this reaction: y = 1895x + 0.027 Calculate the equilibrium concentration of the Fe³+ Report your answer to 4 sig figsarrow_forwardAtomic Spectroscopy (a) In terms of spectral shape, how are atomic spectra different from molecular spectra? What is the source of this difference? (b) Describe the decision-making process for picking a line for atomic emission analysis of a given analyte. (c) For quality assurance, spike recovery is not sufficient to establish confidence in an analytical procedure. Explain this statement. What should be done instead to demonstrate satisfactory performance of an instrumental method (including elemental analysis). (d) Find a literature example of atomic spectroscopy used for elemental analysis. State the operating conditions with sufficient detail to reproduce the analysis; Please answer very soon will give rating surely All questions complete Answer needed Please help mearrow_forward(5) A sample of sodium phosphate is dissolved in water to give 100.00 mL of solution (Solution A). Then this solution is diluted 5 times to give the final solution (Solution B). Solution B is Known to contain 3.920 x 1022 number of PO43- ions, which has an absorption peak at 460 nm and absorbance value of 0.355 in a 1.000 cm cuvette. (i) Calculate the molar absorptivity of Solution B. (ii) What mass of sodium phosphate (MM 163.94 g/mol) dissolved in Solution A.arrow_forward
- What is the significance of whether the fluorescent substance in fluorescent tubes has a short or long phosphorescence?arrow_forwardYou have extracted a new compound with a molar mass of 270 g/mol. A 10 mg/L of this substance in a 1-cm cuvette can transmit 60% of the original incident radiation intensity. Calculate (a) the absorbance and (b) the molar absorptivity of the new compound.arrow_forwardWhat are the advantages and disadvantages of using quantum dots for fluorescence imaging?arrow_forward
- Assume for the following situations that Beer’s law remains linear. For (a) and (b), indicate whether the extinction coefficient ε, path length b, or concentration C is changing, and how it will change the absorbance of the solution. (a) A sample is moved from a test tube that is 1.0cm wide to a test tube that is 1.5cm wide. (b) A sample is diluted by adding enough solvent to double its volume. (c) A solution of iron (III) chloride appears brown when in high enough concentrations. In a 1.0 cm cuvet, the absorbance of 334 nm light by a 5.4 × 10−4 M solution of FeCl3 is measured to be 1.05. What is the extinction coefficient of the FeCl3 complex at this wavelength? (d) A sample containing an unknown concentration of FeCl3 is measured to have an ab- sorbance of 0.43 at 334 nm in a 1.0 cm cuvet. What is the molar concentration of the solution?arrow_forwardDiscuss how X-rays suitable for macromolecular studies are generated “in-house”. What are the advantages of using synchrotron radiation for macromolecular studies?arrow_forwardDetermine the time in seconds required to sputter 50 nm of Si using a 10 µA/cm2 beam of 45 keV ions of (a) Ne, (b) Kr, and (c) Xe.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
Principles of Instrumental Analysis
Chemistry
ISBN:9781305577213
Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:Cengage Learning