Method and apparatus for cleansing residue from a sample transfe

Details Method and apparatus for cleansing residue from a sample transfe Method and apparatus for cleansing residue from a sample transfe

1977-05-16

1978-05-09

Serwin, R. E.

Chemistry: physical processes

Physical processes

Crystallization

23259, 21 2, 134 19, 134105, G01N 114

Patent

active

040884465

ABSTRACT:
Heat is applied to atomize the residual liquid from a sample transfer probe on which at least the tip is fabricated of heat resistant material. In one embodiment, the sample transfer probe is disposed within an atomic absorbtion spectrometer having a hollow graphite furnace that includes a port through which the sample is dispensed for atomization in the furnace. The probe tip in this embodiment is configured to extend into the graphite furnace while making thermal contact therewith so that the sample residue on the probe tip is atomized simultaneously with the sample in the furnace. Inert gas is connected to the sample transfer probe through a control valve to flush the atomized sample residue from within the probe tip in still another embodiment.

REFERENCES:
patent: 3536449 (1970-10-01), Astle
patent: 3883305 (1975-05-01), Hoskins et al.
patent: 3985508 (1976-10-01), Williams

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