What is the principle of Atomic Emission Spectroscopy?

Atomic emission spectroscopy (AES) is a method of chemical analysis that uses the intensity of light emitted from a flame, plasma, arc, or spark at a particular wavelength to determine the quantity of an element in a sample.

What is the purpose of Atomic Emission Spectroscopy?

Atomic emission spectroscopy can be used to determine the identity, the structure and the environment of atoms by analyzing the radiation emitted by them.

How does an ICP spectrometer work?

In the ICP-OES the plasma is generated at the end of a quarts torch by a cooled induction coil through which a high frequency alternate current flows. Due to collision between the argon atom and the electrons ionization occurs, giving rise to a stable plasma. The plasma is extremely hot, 6000-7000 K.

What is emission spectroscopy based on?

Classical emission spectroscopy is based on excitation of atoms or molecules into higher electronic states by electron impact (in gas discharges), photon absorption or thermal excitation at high temperatures (in star atmospheres).

What are the types of emission spectroscopy?

Different types of modern spectrophotometers cover wide ranges of the electromagnetic spectrum: X-ray, ultraviolet, visible, infrared, or microwave.

What are the types of atomic emission spectroscopy?

Atomic Emission Spectrometry

• Inductively Coupled Plasma Mass Spectrometry.
• Inorganic Ions.
• Atomic Absorption Spectrometry.
• Inductively Coupled Plasma Atomic Emission Spectrometry.

Who used emission spectroscopy?

This method is used in flame emission spectroscopy, and it was also the method used by Anders Jonas Ångström when he discovered the phenomenon of discrete emission lines in the 1850s.

Why is ICP used for AES?

Inductively coupled plasma atomic emission spectroscopy (ICP-AES) is a spectral method used to determine very precisely the elemental composition of samples; it can also be used to quantify the elemental concentration with the sample.

Which is an example of emission spectroscopy?

For example, when platinum wire is dipped into a sodium nitrate solution and then inserted into a flame, the sodium atoms emit an amber yellow color. Similarly, when indium is inserted into a flame, the flame becomes blue. These definite characteristics allow elements to be identified by their atomic emission spectrum.

What are the characteristics of emission spectra?

The characteristic emission spectrum for a given element is the set of all the possible x-ray transition lines. Lines that correspond to different transitions from initial states having a vacancy in the same layer constitute a spectral series, for example, K- , L-, M-series, etc.

What emission means?

1 : an act or instance of emitting. 2a : something sent forth by emitting: as. (1) : electrons discharged from a surface. (2) : electromagnetic waves radiated by an antenna or a celestial body. (3) : substances and especially pollutants discharged into the air (as by a smokestack or an automobile gasoline engine)

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