Atomic absorption refers to the absorption phenomenon of characteristic spectral lines radiated by atoms of the same type in a gaseous state. When radiation is projected onto atomic vapor, if the energy corresponding to the wavelength of the radiation is equal to the energy required for the atom to transition from the ground state to the excited state, it will cause the atom to absorb the radiation and produce an absorption spectrum. The ground state atom absorbs energy, and the outermost electrons undergo a transition from a low-energy state to an excited state.
The characteristics of flame atomic absorption spectroscopy include high sensitivity, strong anti-interference ability, high precision, good selectivity, simple instrument, and easy operation. The instrument emits light with characteristic spectral lines of the tested element from the light source, which is absorbed by the ground state atoms of the tested element in the vapor when passing through the sample. The content of the tested element in the sample is determined by the degree to which the radiation characteristic spectral lines are attenuated.
Atomic absorption spectroscopy can measure various elements, flame atomic absorption spectroscopy can measure on the order of (10) -9g/mL, and graphite furnace atomic absorption spectroscopy can measure on the order of (10) -13g/mL. Its hydride generator can perform micro trace determination of eight volatile elements, including mercury, arsenic, lead, selenium, tin, tellurium, antimony, germanium, etc. Due to the sensitivity, accuracy, and simplicity of atomic absorption spectroscopy, it has been widely used for the analysis of constant and trace elements in metallurgy, geology, mining, petroleum, light industry, agriculture, medicine, health, food, and environmental monitoring.
Product Features:
1. Total reflection optical system, full band chromatic aberration reduction, automatic wavelength scanning, and automatic peak searching.
2. Automatic adjustment of negative high voltage, lamp current, optimal element lamp position, automatic ignition, and automatic shutdown protection.
The automatic control system of the 8-lamp rack (optional with 2 high-performance lamps) can adjust the hollow cathode lamp to the optimal position, and can individually set the position of a specific element lamp. The work lamp and preheating lamp can be freely set, greatly saving the preparation time of element lamps.
3. Flame graphite furnace atomic absorption spectrophotometer with all titanium burner, stable combustion and fast thermal equilibrium speed.
4. Featuring deuterium lamp buckle background and self-priming buckle background.
5. Graphite furnace heating: Users can freely set the heating curve according to their needs. Design of constant power temperature control for graphite furnace: It achieves uniform and consistent temperature of graphite tubes, maintains good dynamic stability of graphite tube working temperature, and ensures the accuracy of analysis.