Method and apparatus for the wet digestion of organic and biolog

Details Method and apparatus for the wet digestion of organic and biolog Method and apparatus for the wet digestion of organic and biolog

1976-02-18

1978-03-21

Serwin, R.E.

Chemistry: physical processes

Physical processes

Crystallization

23230B, 23259, 23292, 232905, B01J 300, B01J 700

Patent

active

040801683

ABSTRACT:
A rapid, safe and efficient process for the digestion and destruction of organic matter in materials of biological origin. Acid mixtures (nitric and perchloric acids for ashing; appropriate acid mixtures for other digestions) are added to the sample and then heated internally by absorption of microwave energy from a precisely controlled field within a specially modified microwave oven.
Apparatus used for the digestions include a microwave oven equipped with an internal, acid-fume resistant box or liner, a positive flow ventilation system through the box, and an acid-fume trap or scrubber for treating the exhaust fumes from the box. Additional apparatus includes a precise timing system for controlling the delivery of microwave energy, or an interrupted duty cycle timing system.

REFERENCES:
patent: 3020130 (1962-02-01), Ferrari
patent: 3178265 (1965-04-01), Ferrari
patent: 3467500 (1969-09-01), Wilkinson et al.

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