The Kjeldahl Method as a Primary Reference Procedure for Total Protein in Certified Reference Materials Used in Clinical Chemistry. II. Selection of Direct Kjeldahl Analysis and Its Preliminary Performance Parameters

References

• AACC. Approved Methods of Analysis; American Association of Cereal Chemists (AACC): St. Paul, MN, 1995.
   Google Scholar
• American Public Health Association, American Water Works Association, and Water Pollution Control Federation. Standard Methods for the Examination of Water and Wastewater. Definition and Procedure for the Determination of Method Detection Limits, 18th Ed.; American Public Health Association: Washington, DC, 1992.
   Google Scholar
• Archibald, R. M. Nitrogen by the Kjeldahl Method. In Standard Methods of Clinical Chemistry; Seligson, D., Ed.; Academic Press: New York, 1958; Vol. 2; p 91.
   Google Scholar
• Beach, E. F. Nonprotein Nitrogen. In Standard Methods of Clinical Chemistry; Seligson, D., Ed.; Academic Press: New York, 1958; Vol. 2; p 100.
   Google Scholar
• BIPM. International Vocabulary of Metrology – Basic and General Concepts and Associated Terms (VIM), 3rd ed.; TNI 01 0115:2009 (83031); BIPM: Sèvres, France, 2012.
   Google Scholar
• Cannon, D. C.; Olitzky, I.; Inkpen, J. A. Proteins. In Clinical Chemistry. Principles and Technics, 2nd ed.; Henry, R. J.; Cannon, D. C.; Winkelman, J. W., Eds.; Harper and Row: New York, 1974; p 430.
   Google Scholar
• Chromý, V.; Sváchová, L.; Novosád, L.; Jarkovský, J.; Sedlák, P.; Horák, P.; Dobrovolná, H.; Hlávaková, B. Albumin-Based or Albumin Linked Calibrators Cause a Positive Bias in Serum Proteins Assayed by the Biuret Method. Clin. Chem. Lab. Med. 2009, 47, 91–101.
   PubMed Web of Science ®Google Scholar
• Chromý, V.; Vinklárková, B.; Šprongl, L.; Bittová, M. The Kjeldahl Method as a Primary Reference Procedure for the Determination of Total Protein in Certified Reference Materials Used in Clinical Chemistry. I. A Review of Kjeldahl Methods Adopted by Laboratory Medicine. Crit. Rev. Anal. Chem. In press.
   Google Scholar
• Clinical Laboratory Standards Institute. Evaluation of Detection Capability for Clinical Laboratory, Measurement Procedures; Approved Guideline EP17-A2, 2nd ed.; CLSI Press: Wayne, PA, 2012a.
   Google Scholar
• Clinical Laboratory Standards Institute. Expression of Measurement Uncertainty in Laboratory Medicine. Approved Guideline C51-A; CLSI Press: Wayne, PA, 2012b.
   Google Scholar
• Doumas, B. T. Standards for Total Serum Protein Assays – A Collaborative Study. Clin. Chem. 1975, 27, 1159–1166.
   Google Scholar
• Fraser, C. G. Biological Variation: From Principles to Practice; AACC Press: Washington, DC, 2009; p 133.
   Google Scholar
• Hiller, A.; Van Slyke, D. D. A Study of Certain Protein Precipitants. J. Biol. Chem. 1922, 53, 253–267.
   Google Scholar
• Hiller, A.; Greif, R. L.; Beckman, W. W. Determination of Protein in Urine by the Biuret Method. J. Biol. Chem. 1948a, 176, 1421–1429.
   PubMed Web of Science ®Google Scholar
• Hiller, A.; Plazin, J.; Van Slyke, D. D. A Study of Conditions for Kjeldahl Determination of Nitrogen in Proteins. Description of Methods with Mercury as Catalyst, Titrimetric and Gasometric Measurements of the Ammonia Formed. J. Biol. Chem. 1948b, 176, 1401–1420.
   PubMed Web of Science ®Google Scholar
• Kachmar, J. F. Proteins and Amino Acids. In Fundamentals of Clinical Chemistry; Tietz, N. W.; Ed.; W.B. Saunders: Philadelphia, 1970; p 714.
   Google Scholar
• Kirk, P. L. Kjeldahl Method for Total Nitrogen. Anal. Chem. 1950, 22, 354–358.
   Web of Science ®Google Scholar
• Labconco. A Guide to Kjeldahl Nitrogen Determination Methods and Apparatus. An Industry Service Publication. http://www.labconco.com
   Google Scholar
• Miller, L.; Houghton, J. A. The Micro-Kjeldahl Determination of the Nitrogen Content of Amino Acids and Proteins. J. Biol. Chem. 1945, 159, 373–383.
   Web of Science ®Google Scholar
• Montgomery, D. C. Introduction to Statistical Quality Control, 6th ed.; John Wiley and Sons: Hoboken, NJ, 2009.
   Google Scholar
• Parnas, J. K.; Wagner, R. Űber die Asführung von Bestimmungen Kleine Stickstoffmengen nach Kjeldahl. Biochem. Z. 1921, 125, 253–256.
   Google Scholar
• Persson, J. A.; Wennerholm, M.; O’Halloran, S. Handbook for Kjeldahl Digestion. A Recent Review of the Classical Method with Improvements Developed by Foss, 4th ed.; Foss: Hilleroed, Denmark 2008.
   Google Scholar
• Saez-Plaza, P.; Michalowski, T.; Navas, M. J.; Asuero, A. G.; Wybraniec, S. An Overview of the Kjeldahl Method of Nitrogen Determination. Part I. Early History, Chemistry of the Procedure, and Titrimetric Finish. Crit. Rev. Anal. Chem. 2013a, 43, 178–223.
   Web of Science ®Google Scholar
• Saez-Plaza, P.; Navas, M. J.; Wybraniec, S.; Michalowski, T.; Asuero, A. G. An Overview of the Kjeldahl Method of Nitrogen Determination. Part II. Sample Preparation, Working Scale, Instrumental Finish, and Quality Control. Crit. Rev. Anal. Chem. 2013b, 43, 224–272.
   Web of Science ®Google Scholar
• Tomíček, O. Titrimetric Analysis; Czechoslovak Chemical Society for Science and Industry: Prague, 1949.
   Google Scholar
• Vinklárková, B. The Determination of Total Serum Protein by Kjeldahl Method Suitable for the Certification of Materials Used as Calibrators and Controls. Master's Diploma Thesis, Department of Chemistry, Faculty of Science, Masaryk University, Czech Republic, 2013.
   Google Scholar
• Žaludová, L. Uncertainty of an Acidimetric Titrimetric Microanalysis of Alkalies. Bachelor's Diploma Thesis, Department of Chemistry, Faculty of Science, Masaryk University, Czech Republic, 2013.
   Google Scholar