The difference between atomic absorption pyrolytic graphite tube and common graphite tube
In addition to its excellent performance, flame atomic absorption has been added with an on-line dilution device and switchable single - and double - path optical systems. The graphite furnace atomic absorption spectrometer adopts transverse heating graphite tube, the heating speed can be as high as 3800K/ seconds, and can set up as many as 30 heating steps to be suitable for various applications.
The accuracy of flame atomic absorption spectrometry can be measured to 10-9g/ml orders of magnitude. 10-13g/ml order of magnitude can be measured by graphite furnace atomic absorption spectrometry.
The selection of operating conditions of flame burner operating condition selection (TS lifting capacity, flame type, burner height). Selection of optimum operating conditions for graphite furnace (optimum atomization temperature of inert gas).
Atomizer with different flame atomizer consists of three parts: atomizer, premixing chamber and burner. Features: easy operation and good reproducibility. Graphite furnace atomic device is a type of system will be placed in the pipe wall, graphite platform, carbon sample holes or graphite crucible with electric heating to a high temperature to achieve atomization. Tubular graphite furnace is the most commonly used atomization device. The atomization program is divided into drying, ashing, atomization and high temperature purification. The atomization efficiency is high: under the adjustable high temperature, the sample utilization rate is 100%. High sensitivity: the detection limit is 10-6~10-14. Small amount of sample: suitable for determination of refractory elements.
