Concept explainers
Interpretation:
The reason why standard addition and internal standards are desirable instead of calibration curve has to be explained.
Concept Introduction:
Standard addition:
Standard addition are the addition of known quantities of analyte to unknown solution, with the increase in linearity we can deduce that how much analyte present in the original unknown solution.
Where,
For an initial volume
The total volume is
And the concentration of equation
Internal standards:
An internal standard is a known volume of a compound-not the same as analyte-that is
added to the unknown. A signal from analyte is compared with signal from the internal standard to observe how much analyte is existing.
Want to see the full answer?
Check out a sample textbook solutionChapter 5 Solutions
Quantitative Chemical Analysis
- ChemistryChemistryISBN:9781305957404Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCostePublisher:Cengage LearningChemistryChemistryISBN:9781259911156Author:Raymond Chang Dr., Jason Overby ProfessorPublisher:McGraw-Hill EducationPrinciples of Instrumental AnalysisChemistryISBN:9781305577213Author:Douglas A. Skoog, F. James Holler, Stanley R. CrouchPublisher:Cengage Learning
- Organic ChemistryChemistryISBN:9780078021558Author:Janice Gorzynski Smith Dr.Publisher:McGraw-Hill EducationChemistry: Principles and ReactionsChemistryISBN:9781305079373Author:William L. Masterton, Cecile N. HurleyPublisher:Cengage LearningElementary Principles of Chemical Processes, Bind...ChemistryISBN:9781118431221Author:Richard M. Felder, Ronald W. Rousseau, Lisa G. BullardPublisher:WILEY