A method for determining total nitrogen in Kjeldahl digestion solution using a centrifugal analyser
1987
Concerns About a Method for Determining Total Nitrogen
Commentary
Author Information
Author(s): A. Fleck
Primary Institution: Department of Chemical Pathology, Charing Cross and Westminster Hospital Medical School
Conclusion
The author suggests that the method for determining ammonia in Kjeldahl digests may have significant limitations and risks.
Supporting Evidence
- The use of perchloric acid in digestion is discouraged due to explosion hazards.
- Selenium dioxide as a catalyst may lead to incomplete recovery of nitrogen.
- The authors did not provide evidence of analyte recovery from real samples.
Takeaway
The author thinks the method for measuring nitrogen might not be safe or effective, and others should be careful if they want to use it.
Limitations
The method may lead to incomplete recovery of nitrogen and has safety hazards due to the use of perchloric acid.
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