The core of atomic absorption spectrometer -atomic tube
In 1959, L.vov, a former Soviet scientist, designed graphite crucibles atomizer in Lviv.
In 1967, H. Massmann, a German scholar, got inspiration from the graphite atomizer in Livov, designed an electrothermal graphite furnace and was applied to a commercial atomic absorption spectrometer by PE in 1970. Since the longitudinally heated graphite furnace designed by Masman which became a commercial instrument for the first time, this longitudinally structured graphite furnace was later called "Masman furnace" to commemorate it.
After 1980, the transverse heating technology of the atomic tube was invented by the American PE company. Various types of transverse atomic tube came into being.
As the atomization component of the atomic absorption spectrometer, the quality of the atomic tube directly determines the accuracy of the test results. In the earlier stage, the graphite tube was directly processed into the desired shape and used for sample atomization. In the process of atomization, it was found that some samples would penetrate into the tube because of the pores in the graphite itself, resulting in some deviations in the test results.
So the researchers thought of using a compact material to fill the pores of the graphite tube to prevent the sample from seeping into the wall of the tube during atomization. A new type of atomic tube, coated graphite tube, has been developed. The coated graphite tube is coated with dense pyrolytic graphiteby CVD process. The above problems have been successfully solved, the sensitivity and accuracy of the test have been increased, and the service life of the tube has been greatly improved.
Stanford Advanced Materials has professional technicians and equipment for the production and processing of pyrolytic coated graphite pipes, as well as customized production of pyrolytic coated graphite pipes according to customer requirements.
For more information, please visit http://www.samaterials.com/