Isotopes, and mass spectrometry

Hintenberger, M. (1956). In Electromagnetically Enriched Isotopes and Mass Spectrometry (M. L. Smith, ed.), p. 177. Butterworths, London. 

Nintenberger, N. (1955). A survey of the use of stable isotopes in dilution analysis, in Smith, M.L., ed.. Electromagnetically enriched isotopes and mass spectrometry. Proceedings Conference, Harwell, p. 177, Butterworths Scientific Publications, London. 

Zinc metabolic studies in which the difference between the total dietary intake and the total excretion in faeces and in urine, is measured over a period of several days. The difficulties of this procedure include problems of ensuring complete collections of excreta and measurement of losses in sweat, shed skin and hair. These losses although minor, may cause cumulative errors. Analytical problems caused by accidental zinc contamination are also a worry, although here the use of stable zinc isotopes and mass spectrometry or neutron activation is an advantage. 

This paper presents a brief overview of the use of stable isotopes and mass spectrometry, and provides several examples of how these teehniques can be applied in farm animals to quantify neogenesis and utilization of maeronutrients. 

Overview of stable isotopes and mass spectrometry analyses... 

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