APPARATUS FOR IMPULSE DOSING OF LIQUID MICROSAMPLES IN ATOMICABSORBING SPECTROPHOTOMETER FLAME

摘要

A device for pulse dosage of liquid microsamples into the flame of an atomic absorption spectrophotometer (AAS) comprises a three-way distributor and an electromagnetic valve acting on one of the three channels of the distributor, the second of the three channels being for connection to a source of the sample to be analysed by the atomic absorption spectrophotometer and the third of the three channels being for connection to the atomiser unit of the atomic absorption spectrophotometer. In one embodiment, the device is constructed of two units at most, said units being located at different levels in respect to the atomiser of the atomic absorption spectrophotometer, the three-way distributor of the higher level unit being connected to a container for the sample, to the atmosphere through its electromagnetic valve and to the three-way distributor of the lower level unit, said distributor of the lower level unit being connected through its valve to a container for solvent, and to the atomiser.