grafietovenatomoabsorptiespectrometrie

Grafietovenatomoabsorptiespectrometrie, often abbreviated as GTAAS, is an analytical technique used to determine the concentration of elements in a sample. It is a type of atomic absorption spectrometry that employs a graphite furnace as the atomization device. The graphite furnace is heated to high temperatures, typically ranging from 1000 to 3000 degrees Celsius, to vaporize the sample and atomize the elements of interest.

The process begins with the introduction of a small volume of liquid sample into the graphite furnace. The sample is then dried and ashed to remove organic matter and other non-metallic components. The furnace is then heated to a high temperature to vaporize the sample and atomize the elements. The resulting atoms absorb light at specific wavelengths, which are characteristic of the elements. The absorbance of light is measured and used to determine the concentration of the elements in the sample.

GTAAS is widely used in various fields, including environmental monitoring, clinical chemistry, and materials science, due to its high sensitivity and low detection limits. It is particularly useful for the analysis of trace elements, which are present in very small quantities. The technique is also relatively simple and inexpensive, making it a popular choice for many analytical applications. However, it does have some limitations, such as the need for a high-quality sample and the potential for matrix effects, which can interfere with the analysis.