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Primary Examiner: Marantz, Sidney
Assistant Examiner:
Attorney: Hubbell, Cohen, Stiefel & Gross

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Title: Process and catalyst for determining nitrogen in a sample according to the Kjeldahl principle

Abstract: An antimonate, such as potassium antimonate, is used as the destruction catalyst in nitrogen determinations according to the Kjeldahl principle. Preferred catalyst comprises potassium antimonate together with potassium sulfate (for increasing the boiling point of the destruction mixture) and minor amounts of zinc sulfate and cupric sulfate (as co-catalysts).

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Inventors: Christoffersen, Steen R. (Hilleroed, DK)
Bjarno, Ole-Christian (Holte, DK)

Application Number: 949269
Filing Date: 1978-10-06
Publication_date: 1980-10-21
Assignee: A/S N. Foss Electric (Hilleroed, DK)
Primary Class(es): 436/114 436/20, 436/86, 502/343
Other Classes:
US Patent Ref:

3335097	Aug, 1967	Gillis	252/428.
3346659	Oct, 1967	Barclay	252/461.
3525701	Aug, 1970	Barclay	252/461.
3627817	Dec, 1971	Barnett	252/461.
3709829	Jan, 1973	Gasson	252/461.
3984353	Oct, 1976	Sergunkin	252/461.

Other Refs: Other References: Chemical Abstracts, 78: 146344x (1973).