Atomic absorption spectrophotometry

The operating principle consists in the transformation in atomic vapours of the chemical elements whose presence is to be determined and analysed, by introducing them in a flame. The atomic absorption spectrometer emits the characteristic radiated light of the analyte using hollow cathode lamps. The analyte absorbs the characteristic radiated light after atomized. The emitted radiation is separated according to the wavelength and recorded by using a special software. The content of the samples can be calculated by mensurating absorbed energy of the light. The quantitative analysis could be realized by using a calibration curves obtained from different solution with a known concentration.

The Atomic Absorption Spectrophotometer AA-7000 series incorporates two background correction functions, the D2 method (Deuterium Lamp method) and the SR method (High-Speed Self-Reversal method), enabling selection of the appropriate method for the measurement sample.

The AA-7000 series instruments support the following measurement modes:

- Flame Continuous Method

- Furnace Method (Electrothermal method)

Possible detection of:

            Ag, Al, As, Au, Ba, Be, Bi, Ce, Cd, Co, Cr, Cs, Cu, Fe, In, K,

            Li, Mg, Mn, Mo, Na, Ni, Pb, Pt, Sb, Se, Si, Sn, Te, Ti, Tl, V, Zn.