Results 291 to 300 of about 68,403 (337)

Evaluation of the Strontium Isotope Ratios in Soil-Plant-Fruit: A Comprehensive Study on Vignola Cherry (Ciliegia di Vignola PGI). [PDF]

Foods
Lancellotti L, D'Eusanio V, Manzini D, Durante C, Marchetti A, Tassi L.   +5 more
europepmc   +1 more source

Individual Microfossil δ¹³C Shows That δ¹³C_org Excursions in the Neoproterozoic Chuar Group Do Not Reflect the Exogenic Carbon Cycle. [PDF]

Geobiology
Agić H, Porter SM, Cohen PA, Thomas JB, Junium CK.   +4 more
europepmc   +1 more source

Multi-species entanglements and stable isotope signals (<i>δ</i>¹³C and <i>δ</i>¹⁵N) in modern reindeer herding communities of boreal northeast Asia. [PDF]

Philos Trans R Soc Lond B Biol Sci
Windle M, Pleuger-Dreibrodt S, Clark JK, Bayarsaikhan J, Taylor W, Piezonka H.   +5 more
europepmc   +1 more source

A semi-mechanistic aging model of Pb added to soil by a modified stable isotope dilution technique. [PDF]

Sci Rep
Ji X, Li J, Sun S, Zhong Y, Ma Y.
europepmc   +1 more source

Timing Is Everything: The Metabolic Partitioning of Suberin-Destined Carbon. [PDF]

Plants (Basel)
Sinka JL, Bernards MA.
europepmc   +1 more source

Spiking isotope dilution [PDF]

Journal of Radioanalytical Chemistry, 1975
The isotope dilution method, which is based on the isolation of a constant substoichiometric amount, can be completed by a group of radiometric techniques in which this amount is a function of the concentration to be determined. It is convenient then to plot the experimental data in such a way that a straight line is obtained.
H. Köhnemann, W. van der Mark, H. A. Das   +2 more
openaire   +1 more source

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Determination of Copper by Isotopic Dilution

Biological Trace Element Research, 1994
A rapid and selective method was used for the determination of copper by isotopic dilution employing substoichiometric extraction with dithizone in carbon tetrachloride. The appropriate pH range for the substoichiometric extraction was 2-7. In the analysis, even a large excess of elements forming extractable complexes with dithizone does not interfere.
E. S. Faquim, Casimiro S. Munita
openaire   +3 more sources

Isotope dilution assay for biotin

Analytical Biochemistry, 1974
Abstract An isotope dilution assay for biotin, sensitive in the 1–10 ng range, is described.
Amiram D. Landman, Lila Ramamurti, K. Dakshinamurti, R.J. Constable   +3 more
openaire   +3 more sources