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Why is atomic absorption not used for qualitative analysis?
For one thing, atomic absorption equipment is basically a fancier version of flame emission equipment (I'm unaware of any instrument capable of doing AA that can't also do FE), and flame emission doesn't require you to change tubes every time you want to check for another element.
How does the number of lines in the emission spectrum for an element compare with the number of lines in the absorption spectrum?
An emission spectrum depend on electrons transition in the atom of a chemical element; and elements are different.Absorption spectrum is based on the different absorption pics of different molecules, depending on the frequency of radiation.Spectral methods are largely used in analytical chemistry.
How do positron emission and electron capture change an atom?
After positron emission or electron capture the atomic number is decreased with one.
Do lines of a particular element appear at the same wavelength in both emission and absorption line spectra?
Yes.
Image of emission or absorption spectrum of manganese?
This would consist of several series of lines corresponding to the energies of electron transitions. They are bright lines for an emission spectrum and dark for absorbtion.
When is atomic absorption more sensitive than atomic emission in atomic absorption spectrometers?
Atomic absorption is more sensitive to atomic emission when the excitation potential is greater than 3.5eV.
What are the strenghts of atomic absorption spectrometry compared to atomic emission spectrometry?
Atomic absorption spectrometry is more sensitive than atomic emission spectrometry.
Is spectral interference more common in atomic emission spectroscopy or atomic absorption spectroscopy?
Spectral interference is more common in atomic emission spectroscopy due to overlapping spectral lines.
Why is source modulation used in atomic absorption spectroscopy?
Source modulation is employed to distinguish between atomic absorption (an ac signal) and flame emission (a dc signal).
What are the advantages of ICP-MS compare to atomic emission spectrometry and atomic absorption spectrometry?
ICP-MS allows multi-element analysis. It has a longer linear working range so fewer standards for calibration is needed as they can be spaced further apart. ICP-MS also has a higher sensitivity compared to atomic emission spectrometry or atomic absorption spectrometry.
Why is atomic absorption not used for qualitative analysis?
For one thing, atomic absorption equipment is basically a fancier version of flame emission equipment (I'm unaware of any instrument capable of doing AA that can't also do FE), and flame emission doesn't require you to change tubes every time you want to check for another element.
Does atomic emission come from the sun?
there is no atomic emission from the sun.
What analytical instruments can be used to identify the metal in a salt such as calcium carbonate?
Examples: emission spectrometry, flame photometry, atomic absorption, etc.
Advantages and disadvantages of atomic emission spectrometry?
advantages of atomic emission
How do emission and absorption spectrums tell us about the composition of objects in our universe?
Each chemical element has a specific emission or absorption spectrum.
How do you find copper in brass using the spectrophotometer absorptions?
Digest (dissolve) a small portion of the brass in nitric acid. Then test the sample for copper content using an atomic emission or atomic absorption spectrometer.
What is the difference between emission and absorption?
Emission is something be spread out, while absorption is something being taken in.
