|In this technique a light source emitting a narrow spectral line of characteristic energy which is used to excite the free atoms formed in the flame or atomized. The decrease in energy (absorption) is the measured by detector. The absorption is directly proportional to the concentration of free atoms in the flame or electrothermal atomizer.|
|1. Graphite furnace|
This attachment is used for the detection of elemental impurities in ppb or ppt level. The sample volume required for analysis is in few micro litter.
Sample quantity : 2-3 ?l / element ( liquid sample) or 1-2 gm solid sample.
|2. Hydride Generator|
| This technique is used for the analysis of trace metal impurities in ppb
level. Detection of certain hydride forming elements like As, Sb, Bi, Sn,
Se, Te & Hg, can be precisely analyzed which are not possible
to detect in flame AAS or ICP-OES at low level.
|Sample quantity :|
|1-2 gm (solid sample)
or 10-15 ml/element ( liquid sample)
|Detection limits :|
|Analysis of trace metal impurities from Inorganic/Organic / Polymer/Glass/ Ceramic Geological sample/ Biological samples up to ppb and in some cases in ppt level.|