For atomic emission spectroscopy and atomic absorption spectroscopy, which one is more sensitiveto flame instability and why
Question
For atomic emission spectroscopy and atomic absorption spectroscopy, which one is more sensitiveto flame instability and why
Solution
Atomic emission spectroscopy and atomic absorption spectroscopy are both analytical techniques used to determine the concentration of elements in a sample.
In atomic emission spectroscopy, the sample is excited by a high-energy source, such as a flame or plasma, causing the atoms to emit light at specific wavelengths. The intensity of the emitted light is then measured to determine the concentration of the element of interest.
On the other hand, atomic absorption spectroscopy involves passing a beam of light through the sample containing the element of interest. The atoms in the sample absorb specific wavelengths of light, and the decrease in intensity of the transmitted light is used to determine the concentration of the element.
When it comes to flame instability, atomic emission spectroscopy is generally more sensitive compared to atomic absorption spectroscopy. This is because flame instability can cause fluctuations in the intensity of the emitted light, leading to variations in the measured concentration.
In atomic absorption spectroscopy, the absorption of light by the atoms in the sample is less affected by flame instability. The decrease in intensity of the transmitted light is primarily determined by the concentration of the element, rather than the stability of the flame.
Therefore, if flame instability is a concern, atomic absorption spectroscopy may be a more suitable choice as it is less sensitive to these fluctuations.
Similar Questions
Describe the fundamental principles of atomic absorption spectrometry. Howdoes it differ from atomic emission spectrometry? Why is temperature control so importantin the latter?
Choose the most appropriate statement about spectral interference in flame atomic absorption spectrometry.Question 13Select one:Spectral interference arises from atomic emission lines of the analyte metal overlapping with emission lines of other metal(s) present in the flame.Spectral interference arises as the analytical atomic emission lines are obstructed by broad molecular emission from molecular species present in the flame.All three statements about spectral interference are correct.Spectral interference from molecular species present in the flame can be corrected for by background correction.None of the statements are correct.
What is an advantage of using an instrumental method rather than a chemical test to analyse a substance?Requires special trainingMore expensiveMore accurateRequires comparison with known data2What is flame emission spectroscopy used to analyse?GasesNon-metal ionsMetal ionsMetal and non-metal ions3In flame emission spectroscopy, each metal ion absorbs and gives out its own characteristic pattern of radiation. What is this called?Line spectrumColour spectrumChromatogramRadiation pattern4Which of the following is a use for flame emission spectroscopy?To discover new elementsAll of theseTo control the amounts of trace metals in alloys such as steelTo detect toxic metal ions in drinking water
What is the difference between an emission spectrum and an absorption spectrum? Please write a few sentences.
What information does a flame test provide?A.The quantum numbers of electronsB.The emission spectrum of an elementC.The temperature that causes emissionsD.The absorption spectrum of an element
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