Abstract
Atomic absorption spectroscopy is a well-established technique in the environmental laboratory. It is used for the analysis of air, waters, effluents, stack gases, etc. Many of these determinations can be performed using inductively coupled plasma emission spectroscopy (ICP) as well. The ICP is very often faster when many elements must be determined in a single sample. However, detection limits for some important elements, such as arsenic, selenium and mercury, are better using graphite furnace atomic absorption. Therefore, the laboratory which is required to perform many different types of analysis should be equipped with three techniques, flame atomic absorption, graphite furnace atomic absorption and ICP emission spectroscopy.
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