Question

The order of components in a typical flame atomic absorption spectrometer is

a. flame -->hollow cathode lamp-->monochromator--detector
b.flame --monochromator ----hollow cathode lamp---detector
c.hollow cathode lamp--flame--monochromator--detector
d.hollow cathode lamp--monochromator---flame--detector

Answer 1

The correct sequence is hollow cathode lamp, then flame, followed by monochromator, and finally the detector. This path is the flow of light through the flame atomic absorption spectrometer as it interacts with the analyzed element.

Step-by-step explanation:

The order of components in a typical flame atomic absorption spectrometer (FAAS) follows the path of light from the source to the detector as it interacts with the sample. The correct order is:

• hollow cathode lamp
• flame
• monochromator
• detector

Hollow cathode lamp serves as the light source, providing the specific wavelengths of light that will be absorbed by the element of interest present in the flame. The flame is the place where the sample is atomized, and the absorption of light occurs as the light passes through the flame. After interacting with the sample, the light enters the monochromator, which isolates the specific wavelength of interest, minimizing the spectral interference. Finally, the detector measures the intensity of the transmitted light, which can be used to quantify the concentration of the element in the sample. Therefore, the correct answer to the student's question is option (c).

Answer 2

The order of components in a typical flame atomic absorption spectrometer is hollow cathode lamp--flame--monochromator--detector

Step-by-step explanation:

• The hollow cathode lamp practices a cathode created of the element of interest with a low internal pressure of inert gas.
• Remove scattered light of other wavelengths from the flame. AAS flame includes aiming at first the fuel than the oxidant and then lighting the flame with the instrument's auto-ignition system. Applying flame Ddtroy any analyte ions and breakdown complexes.
• The process of the monochromator is to divide analytical lines photons moving through the flame
• Photomultiplier tube (PMT) as the detector the PMT determines the intensity of photons of the analytical line exiting the monochromator.