graphited petroleum coke
What are the functions of graphited petroleum coke
graphited petroleum coke classification
2. According to performance: ordinary graphited petroleum coke (non-pyrolysis) is suitable for low temperature (≤2000℃) atomized elements such as silver, cadmium and lead; pyrolysis graphited petroleum coke is suitable for low, medium and high temperature (>2500℃) Atomized elements; the platform graphited petroleum coke is suitable for middle and low temperature (≤2400℃) atomized elements.
The role of graphited petroleum coke
Atomic absorption spectroscopy is established based on the fact that the ground state atoms of the measured element in the gaseous state have a strong absorption effect on the element’s atomic resonance radiation. This method has the advantages of low detection limit, high accuracy, good selectivity, and fast analysis speed.
When the experimental conditions such as the temperature absorption optical path and the sampling method are fixed, the ground state atoms of the element to be measured produced by the sample absorb the monochromatic light radiated by the hollow cathode lamp of the element as the sharp-line light source, and its absorbance (A) It is proportional to the concentration (C) of the element in the sample. That is, A=KC where K is a constant. Based on this, by measuring the absorbance of the standard solution and the unknown solution, and knowing the concentration of the standard solution, a standard curve can be drawn to obtain the concentration of the element to be tested in the unknown solution.