Concept explainers
(a)
Interpretation:
The variables that lead to band broadening are to be stated.
Concept introduction:
The band broadening is defined as a phenomenon. It leads the poor chromatographic performance and resolution which results in the reduction of the separation efficiency. This problem is responsible for both the quality and accuracy of the separation.
(b)
Interpretation:
The variable that leads to band separation in gas-liquid chromatography is to be stated.
Concept introduction:
The band broadening is defined as a phenomenon. It leads the poor chromatographic performance and resolution which results in the reduction of the separation efficiency. This problem is responsible for both the quality and accuracy of the separation.
Trending nowThis is a popular solution!
Chapter 27 Solutions
Principles of Instrumental Analysis
- What is the major limitation of IR regarding the materials that can be used for instrumental components.arrow_forwardIn general, we want to have absorptions less than or equal to 1. Given that an ethanol solution of compound Y (150.0 g/mol) in a 1.00 cm quartz cell has an extinction coefficient (ε) of 23,150 at λmax=235 nm, what is the top concentration, in μM, we should consider for compound Y? Report your answer to the correct number of significant figures. Do not report the units in your answer.arrow_forwardThe points on the graph are used to depict the intensity of the ray detected. FT-IR spectrophotometers collect the interferograms of the sample and Fourier-transform them to an absorption spectrum and identify its band spectra analysis. Observe what you see in the graph.arrow_forward
- 2 Describe the primary barrier towards the broad adoption of FT-IR in the mid-20th century.arrow_forwardWhat are factors that determine the solid partitioning of a chemical/element and why is this an important property for transport and toxicity?arrow_forward(a) You measure the percent transmittance of a solution containing chromophore X at 400nm in a 1-cm path length cuvette and find it to be 50%. What is the absorbance of this solution? (b) What is the molar absorptivity of chromophore X if the concentration of X in the solution measured in question (a) is 0.5mM? (c) What is the concentration range of chromophore X that can be assayed if, when using a sample cell of path length 1, you are required to keep the aborbance between 0.2 and 0.8?arrow_forward
- Flame Atomic Absorption Spectroscopy (FAAS) method is selected due to its wide applicability for metal ion analysis in drinking water samples. Provide appropriate discussion to determine the concentration of selected heavy metals (Cu and Cr) in the unknown tap water sample.arrow_forwardIron nanoparticles were produced by the evaporation method and their average sizes are estimated 25,50, 90 and 120 nm using the laser particle analyzer. Assuming that the resultant particles are strain freeand the peak broadening detected in the measurement with Cu-K radiation (λ=0.154 nm) arises onlyfrom variation of size of the crystallites, estimate the peak width (the value of FWHM) of the (110) plane.arrow_forwardIn general, we want to have absorptions less than or equal to 1. Given that an ethanol solution of compound Y (150.0 g/mol) in a 1.00 cm quartz cell has an extinction coefficient (E) of 23,150 at Amax=235 nm, what is the top concentration, in uM, we should consider for compound Y? Report your answer to the correct number of significant figures.arrow_forward
- Principles of Instrumental AnalysisChemistryISBN:9781305577213Author:Douglas A. Skoog, F. James Holler, Stanley R. CrouchPublisher:Cengage LearningPhysical ChemistryChemistryISBN:9781133958437Author:Ball, David W. (david Warren), BAER, TomasPublisher:Wadsworth Cengage Learning,
- EBK A SMALL SCALE APPROACH TO ORGANIC LChemistryISBN:9781305446021Author:LampmanPublisher:CENGAGE LEARNING - CONSIGNMENT