Universität zu Köln

Huelsemann, Frank, Lehn, Christine, Schneider, Sabine, Jackson, Glen, Hill, Sarah ORCID: 0000-0002-7480-0655, Rossmann, Andreas, Scheid, Nicole, Dunn, Philip J. H., Flenker, Ulrich and Schaenzer, Wilhelm (2015). Global spatial distributions of nitrogen and carbon stable isotope ratios of modern human hair. Rapid Commun. Mass Spectrom., 29 (22). S. 2111 - 2122. HOBOKEN: WILEY. ISSN 1097-0231

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Abstract

RATIONALE: Natural stable carbon (C-13) and nitrogen isotope ratios (N-15) of humans are related to individual dietary habits and environmental and physiological factors. In forensic science the stable isotope ratios of human remains such as hair and nail are used for geographical allocation. Thus, knowledge of the global spatial distribution of human C-13 and N-15 values is an essential component in the interpretation of stable isotope analytical results. METHODS: No substantial global datasets of human stable isotope ratios are currently available, although the amount of available (published) data has increased within recent years. We have herein summarised the published data on human global C-13 and(15)N values (around 3600 samples) and added experimental values of more than 400 additional worldwide human hair and nail samples. In order to summarise isotope ratios for hair and nail samples correction factors were determined. RESULTS: The current available dataset of human stable isotope ratios is biased towards Europe and North America with only limited data for countries in Africa, Central and South America and Southeast Asia. The global spatial distribution of carbon isotopes is related to latitude and supports the fact that human C-13 values are dominated by the amount of C-4 plants in the diet, either due to direct ingestion as plant food, or by its use as animal feed. In contrast, the global spatial distribution of human N-15 values is apparently not exclusively related to the amount of fish or meat ingested, but also to environmental factors that influence agricultural production. CONCLUSIONS: There are still a large proportion of countries, especially in Africa, where there are no available data for human carbon and nitrogen isotope ratios. Although the interpretation of modern human carbon isotope ratios at the global scale is quite possible, and correlates with the latitude, the potential influences of extrinsic and/or intrinsic factors on human nitrogen isotope ratios have to be taken into consideration. Copyright (c) 2015 John Wiley & Sons, Ltd.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Huelsemann, Frank UNSPECIFIED UNSPECIFIED UNSPECIFIED Lehn, Christine UNSPECIFIED UNSPECIFIED UNSPECIFIED Schneider, Sabine UNSPECIFIED UNSPECIFIED UNSPECIFIED Jackson, Glen UNSPECIFIED UNSPECIFIED UNSPECIFIED Hill, Sarah UNSPECIFIED orcid.org/0000-0002-7480-0655 UNSPECIFIED Rossmann, Andreas UNSPECIFIED UNSPECIFIED UNSPECIFIED Scheid, Nicole UNSPECIFIED UNSPECIFIED UNSPECIFIED Dunn, Philip J. H. UNSPECIFIED UNSPECIFIED UNSPECIFIED Flenker, Ulrich UNSPECIFIED UNSPECIFIED UNSPECIFIED Schaenzer, Wilhelm UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-386705
DOI:	10.1002/rcm.7370
Journal or Publication Title:	Rapid Commun. Mass Spectrom.
Volume:	29
Number:	22
Page Range:	S. 2111 - 2122
Date:	2015
Publisher:	WILEY
Place of Publication:	HOBOKEN
ISSN:	1097-0231
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language HUMAN DIET; UNIDENTIFIED CORPSES; AMINO-ACIDS; DELTA-N-15; N-15; C-13; RECONSTRUCTION; PROTEIN; IDENTIFICATION; DELTA-C-13 Multiple languages Biochemical Research Methods; Chemistry, Analytical; Spectroscopy Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/38670