Flameless atomic absorption spectrophotometers.

摘要

A flameless atomic absorption spectrophotometer includes a valve controller (6) that connects the inside of a heating tube (20) to an inert gas source (8) before the sample in the tube (20) is atomized, whereby water vapor or organic vapor generated from the sample before the atomizing stage is expelled from the tube through a sampling hole. In the atomizing stage of a heating program, the valve controller (6) connects the inside of the heating tube (20) to the outer atmosphere, whereby the atomized sample can expand along an optical path within the heating tube (20). <IMAGE>