Atomic absorption spectroscopic analytic apparatus
AssigneeShimadzu Corporation
InventorsKikuo Sasaki, Hidehisa Nishigaki
Life of this patent
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Abstract
A sample injector (32) with an upwardly opened sample receiving hole is connected to an atomizer (36) of a flame type atomizing means and on a burner chamber (7) a flameless type atomizing means is mounted ahead of a burner head (9). For distribution of the sample by an auto-sampler (40) it is so arranged that the nozzle is movable to the sample bottle of the auto-sampler (40) and the sample injector (32) or a sample injection hole (30) of the atomizing means placed at the measuring position. This arrangement enables injection of the sample into the atomizing means of either type by means of a common auto-sampler, this facilitating switching between the flame system and the flameless system.
Claims8
An atomic absorption spectroscopic analytical apparatus, comprising:
- a flame type atomizing means provided with a burner head, said flame type atomizing means having an optical axis of a flame thereof set transversely relative to a direction of movement of said flame type atomizing means;
- a flameless type atomizing means placed ahead of said burner head and linked together with said flame type atomizing means, said flameless type atomizing means having an optical axis of an electric furnace thereof set parallel to said optical axis of said flame type atomizing means;
- a support bed for supporting said atomizing means linked together so as to be moveable together;
- a position adjusting mechanism for adjusting the position of said atomizing means linked together in both vertical and horizontal directions;
- a sample injector with a sample receiving hole opening upwardly connected to said flame type atomizing means;
- and
- an auto sample injecting mechanism capable of injecting a sample into said sample injector and a sample injecting hole of said flameless type atomizing means, said auto sample injecting mechanism including a pivoting arm moving through an arc and having a nozzle at its forward end for suction and discharge of the sample, said auto sampling injecting mechanism having a sample container fixed on a locus of said nozzle, and said sample receiving hole of said sample injector and said sample injecting hole of said flameless type atomizing means being positionable on said locus for receiving the sample.
An atomic absorption spectroscopic analytical apparatus, comprising:
- a moveable flame type atomizer having a sample injector with a sample receiving port;
- a moveable flameless type atomizer with a sample injecting hole, said flameless type atomizer linked to said flame type atomizer;
- means for selectively moving said atomizers to a position along an optical axis;
- an auto sample injecting device capable of selectively delivering a sample to said atomizers, said auto sample injecting device defined by a swinging arm moving through an arc and having a sample delivery nozzle mounted thereon for suction and discharge of the sample.
Dependencies are inferred from the claim text.