Evaluation method for linking methamphetamine seizures using stable carbon and nitrogen isotopic compositions: a complementary study with impurity profiling

2008 ◽  
Vol 22 (23) ◽  
pp. 3816-3822 ◽  
Author(s):  
Yuko T. Iwata ◽  
Kenji Kuwayama ◽  
Kenji Tsujikawa ◽  
Hajime Miyaguchi ◽  
Tatsuyuki Kanamori ◽  
...  
Keyword(s):  
Evaluation Method ◽  
Stable Carbon ◽  
Carbon And Nitrogen ◽  
Isotopic Compositions ◽  
Impurity Profiling ◽  
Complementary Study

The effect of metabolic rate on stable carbon and nitrogen isotope compositions in deer mice, Peromyscus maniculatus

2010 ◽  
Vol 88 (1) ◽  
pp. 36-42 ◽  
Author(s):  
J. J. Smith ◽  
J. S. Millar ◽  
F. J. Longstaffe ◽  
R. Boonstra
Keyword(s):  
Metabolic Rate ◽  
Diet Composition ◽  
Peromyscus Maniculatus ◽  
Nitrogen Isotope ◽  
Deer Mice ◽  
Stable Carbon ◽  
Animal Tissues ◽  
Carbon And Nitrogen ◽  
Isotopic Compositions ◽  
Stable Isotopic

The stable isotopic compositions of nitrogen and carbon in animal tissues reflect diet. However, factors other than diet can also affect these stable isotope ratios, leading to misinterpretations of diet composition. To test the hypothesis that variation in metabolic rate alters the isotopic compositions of tissues, deer mice ( Peromyscus maniculatus (Wagner, 1845)) were kept at three temperatures (thermoneutral (23 °C), cool (5 °C), and cold (–10 °C)) and fed ad libitum. The changes in carbon and nitrogen isotope compositions of liver associated with the thermoneutral versus cool and cold conditions were very small in comparison with those arising from differences in diet. We conclude that temperature-induced variations in metabolic rate are insufficient to produce differences in the stable carbon or nitrogen isotope compositions that could be mistaken for changes in diet.

scholarly journals Stable Carbon and Nitrogen Isotopic Compositions of Allyl Isothiocyanate: Implications for the Discrimination of Natural and Artificial Products

2014 ◽  
Vol 63 (3) ◽  
pp. 263-267
Author(s):  
Kyoko KAMATA ◽  
Tomoko HITOMI ◽  
Yasushi SEKIYAMA ◽  
Yuichi MIZUKAMI ◽  
Yuko WATANABE
Keyword(s):  
Allyl Isothiocyanate ◽  
Stable Carbon ◽  
Carbon And Nitrogen ◽  
Isotopic Compositions

Taxonomic, anatomical, and spatio-temporal variations in the stable carbon and nitrogen isotopic compositions of plants from an African savanna

2005 ◽  
Vol 32 (12) ◽  
pp. 1757-1772 ◽  
Author(s):  
Jacqui Codron ◽  
Daryl Codron ◽  
Julia A. Lee-Thorp ◽  
Matt Sponheimer ◽  
William J. Bond ◽  
...  
Keyword(s):  
Temporal Variations ◽  
Stable Carbon ◽  
African Savanna ◽  
Carbon And Nitrogen ◽  
Isotopic Compositions ◽  
Spatio Temporal
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