When white light from Mercury vapour lamp is passed through sodium vapour then we have as outcome a continuous spectrum of colours with two black lines in the yellow-orange region. These two lines stand for the absorption of 5890 A and 5896 A lines of sodium atom
Another example is Fraunhofer lines seen in the continuous spectrum got from sun. These lines are due to absorption of characteristic frequencies of metals present in the chromosphere of the sun
Atomic absorption spectroscopy is used by chemists, environmental scientists, and researchers to detect and quantify the concentration of metallic elements in a sample. Industries such as pharmaceuticals, agriculture, and metallurgy also rely on atomic absorption spectroscopy for quality control and regulatory compliance.
Spectral interference is more common in atomic emission spectroscopy due to overlapping spectral lines.
Atomic absorption spectroscopy typically has a lower detection limit compared to atomic emission spectroscopy because it measures the amount of light absorbed by atoms in a sample, which is more sensitive at low concentrations. Atomic emission spectroscopy, on the other hand, measures the intensity of light emitted by atoms, which can be affected by background noise and matrix effects, leading to a higher detection limit.
There are lots of ways. Atomic absorption spectroscopy comes to mind.
Both flame emission and atomic absorption spectroscopy are analytical techniques used to determine the concentration of elements in a sample. The main similarity is that they both rely on the excitation of atoms in the sample to emit or absorb specific wavelengths of light. The main difference is that in flame emission spectroscopy, the intensity of emitted light is measured, while in atomic absorption spectroscopy, the amount of light absorbed by the atoms is measured.
Atomic absorption spectroscopy is used by chemists, environmental scientists, and researchers to detect and quantify the concentration of metallic elements in a sample. Industries such as pharmaceuticals, agriculture, and metallurgy also rely on atomic absorption spectroscopy for quality control and regulatory compliance.
Spectral interference is more common in atomic emission spectroscopy due to overlapping spectral lines.
Atomic absorption spectroscopy typically has a lower detection limit compared to atomic emission spectroscopy because it measures the amount of light absorbed by atoms in a sample, which is more sensitive at low concentrations. Atomic emission spectroscopy, on the other hand, measures the intensity of light emitted by atoms, which can be affected by background noise and matrix effects, leading to a higher detection limit.
Ted Hadeishi has written: 'Zeeman atomic absorption spectrometry' -- subject(s): Atomic absorption spectroscopy, Zeeman effect
William John Price has written: 'Spectrochemical analysis by atomic absorption' -- subject(s): Atomic absorption spectroscopy
Mainly it is used for soil analysis and water analysis.
There are lots of ways. Atomic absorption spectroscopy comes to mind.
Both flame emission and atomic absorption spectroscopy are analytical techniques used to determine the concentration of elements in a sample. The main similarity is that they both rely on the excitation of atoms in the sample to emit or absorb specific wavelengths of light. The main difference is that in flame emission spectroscopy, the intensity of emitted light is measured, while in atomic absorption spectroscopy, the amount of light absorbed by the atoms is measured.
D. C Girvin has written: 'On-line Zeeman atomic absorption spectroscopy for mecury analysis in oil shale gases' -- subject(s): Mercury, Atomic absorption spectroscopy, Air, Analysis, Pollution
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Source modulation in atomic absorption spectroscopy is used to enhance sensitivity and reduce background noise. By modulating the lamp intensity at a specific frequency, it becomes easier to distinguish the absorption signal from the baseline noise, leading to better detection limits and accuracy in the analysis.
Atomic absorption is used in forensics to analyze trace elements in samples such as blood, hair, or soil. By measuring the absorption of specific wavelengths of light by the atoms in the sample, atomic absorption spectroscopy can determine the presence and concentration of elements like arsenic, lead, or mercury, which can be crucial in solving criminal cases.