Pichat, "Tracing contamination sources in soils with Cu and Zn isotopic
ratios," Science of the Total Environment, vol.
compositions ([delta][sup.18][O.sub.carb]) of pedogenic carbonates reflect both the temperature of precipitation and [delta][sup.18]O composition of the fluid that the carbonates crystallized from (e.g., ), and as a result, have been used to reconstruct both of those variables by assuming the other, through an independent constraint on one variable or other, and more recently, through the use of "clumped isotope" measurements, which produce temperatures that are independent of the starting fluid isotopic
* The determination of the number and the molecular and isotopic
composition of the gases used as reference materials.
In the present study, thirty-nine glass samples were analysed from the isotopic
and chemical points of view.
Here we present an alternative method of isotope analysis that could overcome a number of constraints and therefore has potential for wider adoption of isotopic
techniques as part of AW-IPM programs.
In this study, isotopic
turnover rates, discrimination factors, and C:N ratios were used as indicators of diet performance and nutrient assimilation of larvae in relation to their diet (Roth & Hobson 2000.
This was considered to be a variant of the isotopic
Evidence from isotopic
composition of geoporphyrins
analysis (IA) is based upon the use of mass spectrometers or radioactive radiation counters.
Keywords: Multiple autoimmune syndrome, lichen planus, vitiligo, alopecia areata, isotopic
We examined the isotopic
niche of Arctic Terns during these critical early periods of their breeding season, as well as their trophic ecology in winter, after Arctic Terns have migrated to the Antarctic Ocean (Egevang et al., 2010; Fijn et al., 2013).
Researchers have previously found that diatoms and sponges (which build their skeletons from silica) gradually buried in ocean sediments since the last ice age have a different silicon isotopic
signature to their modern-day relatives.