method and device for probenpositionierung flame atomabsorptionsfotometrie

摘要

There are disclosed a method for setting a sample for flame type atomic absorption spectrophotometry by a method called microsampling method and an apparatus therefor. An atomizer (16) has connected thereto via tube (14) a sample receiver (12) for micro-sampling. The sample receiver (12) has its funnel-shaped upward opening and has connected the tube (14) to the base of the funnel. A control unit (66) controls to make sure that the sample injected into the sample receiver will be so positioned in the tube (14) that a solvent is nearer to the vaporizer than the sample, preferably the solvent is also present nearer to the side of the sample receiver (12) than the sample. The presence of solvent in the tube (14) nearer to the vaporizer (16) than the sample delays the sample being sucked by the vaporizer (16), this preventing interruption of the sample flow in the tube (14) and helping make the atomic absorption waveform more stable. IMAGE