Claims
- 1. Microwave-based apparatus useful for digestion, comprising
- (a) a microwave system having a wall with means defining an aperture formed therethrough, said microwave system comprising an internal chamber formed in part by an interior surface of said wall;
- (b) a reaction vessel disposed within said internal chamber, a portion of said reaction vessel being insulated;
- (c) a connector tube slidably disposed in said aperture of said wall, said connector tube having a portion exterior to said internal chamber and a portion that extends into said internal chamber, an end of said slidably disposed connector tube being joined to a mouth of said reaction vessel by biasing means located outside said internal chamber; and
- (d) external suction means connected to said connector tube.
- 2. The digestion apparatus of claim 1, further comprising means for providing pulsed addition of a liquid to said reaction vessel.
- 3. The digestion apparatus of claim 1, wherein said means for biasing are springs.
- 4. The digestion apparatus of claim 1, wherein said connector tube is vertically disposed.
- 5. The digestion apparatus of claim 1, wherein said biasing means is attached to said wall of said microwave system and to the portion of said connector tube exterior to said internal chamber.
- 6. The digestion apparatus of claim 1, wherein said insulated portion of said reaction vessel is a lower portion.
- 7. The digestion apparatus of claim 1, wherein said connector tube comprises tube means coaxially disposed within said connector tube.
- 8. The digestion apparatus of claim 7, wherein a side wall of a delivery end of said tube means includes an opening for fluid delivery.
- 9. The digestion apparatus of claim 1, wherein said reaction vessel is made of quartz glass.
- 10. The digestion apparatus of claim 1, wherein glass fiber insulation is used.
Parent Case Info
This application is a continuation of application Ser. No. 874,278 filed June 13, 1986, now abandoned.
US Referenced Citations (12)
Foreign Referenced Citations (2)
Number |
Date |
Country |
1045341 |
Nov 1953 |
FRX |
1385483 |
Feb 1975 |
GBX |
Non-Patent Literature Citations (4)
Entry |
P. Barrett et al, Analytical Chemistry, 7, 1021 (1978), Prolabo Literature. |
Bradstreet, The Kjeldahl Method for Organic Nitrogen, 1965, pp. 40-42. |
Kjel-Foss Automatic Literature by A/S N. Foss Electric. |
S. Brayton of the Hach Company, "A Practical Kjeldahl-Nitrogen Method". |
Continuations (1)
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Number |
Date |
Country |
Parent |
874278 |
Jun 1986 |
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