What can be detected using AAS?

In clinical analysis, AAS can test for metals in whole blood, plasma, urine, saliva, brain and muscle tissue, the liver and hair. One example where atomic absorption spectroscopy can provide invaluable support is in measuring mercury levels in fish.

What measurement is AAS?

Atomic absorption spectrometry (AAS) detects elements in either liquid or solid samples through the application of characteristic wavelengths of electromagnetic radiation from a light source. Individual elements will absorb wavelengths differently, and these absorbances are measured against standards.

What is AAS device?

Atomic absorption spectrometry (AAS) is an easy, high-throughput, and inexpensive technology used primarily to analyze compounds in solution. As such, AAS is used in food and beverage, water, clinical, and pharmaceutical analysis.

How does a AAS machine work?

AAS is an analytical technique used to determine how much of certain elements are in a sample. It uses the principle that atoms (and ions) can absorb light at a specific, unique wavelength. When this specific wavelength of light is provided, the energy (light) is absorbed by the atom.

Is AAS expensive?

AAS is cheaper but can only determine the concentration of a particular element. ICP-MS is more expensive but faster, more sensitive and can analyze multiple elements simultaneously (can detect down to PPT levels!).

What are the advantages of AAS?

The main advantages of AAS are that it is relatively inexpensive and easy to use, while still offering high throughput, quantitative analysis of the metal content of solids or liquids. This makes it suitable for use in a wide range of applications.

What is AAS congruence rule?

AAS stands for Angle-angle-side. When two angles and a non-included side of a triangle are equal to the corresponding angles and sides of another triangle, then the triangles are said to be congruent. AAS congruency can be proved in easy steps.

What is the purpose of flame in AAS?

The flame (thermal energy) causes the atom to undergo a transition from the ground state to the first excited state. When the atoms make their transition, they absorb some of the light from the beam. The more concentrated the solution, the more light energy is absorbed!

What is the use of chopper in AAS?

The function of the chopper is to chop the light leaving the source so that when the incident beam hits the chopper at the solid surface, the beam will be blocked and detector will only read the emitted signal from the flame.