Measurement of 18O
and 15N of nitrogenous compounds dissolved in precipitation water samples combined with additional environmental isotopes (e.
Para determinar el area de cria de los canidos domesticos identificados, hemos incorporado en este trabajo analisis de 18O
2004): Belemnites of Valanginian, Hauterivian and Barremian age: Sr isotope stratigraphy, composition (87Sr/86Sr, 13C, 18O
, Na, Sr, Mg), and palaeooceanography.
9 Note: The internationally recognized standards are: Vienna Standard Mean Ocean Water (VSMOW) for 18O
, Vienna Pee Dee Belemnite (VPDB) for carbon, and Vienna Canon Diablo troilite (VCDT) for sulphur.
Stable Isotope (2H, 18O
and 87Sr/86Sr) and Hydrochemistry
Reimplementation of Broadcast regulation 18O
The abundance of 18O
and 13C in a sample is conventionally reported as the per mil (=mg/g or ) difference in delta (d) notation (d18O and d13C) between isotope ratios in the sample and those in the international Pee Dee Belemnite (PDB) standard which has d18O and d13C values of 0 (Hudson 1977).
The naturally occurring forms of oxygen known as 18O
and 16O are present in different proportions to each other in water inside leaves during dry periods in the tropics.
Total body water measurements in humans with 18O
and 2H labeled water.
1997) Body composition in adults with cerebral palsy by dualenergy X-ray absorptiometry, bioelectrical impedance analysis, and skin fold anthropometry compared with the 18O
Number Reference Description Equation of Data Points Craig (1961) Global Meteoric [delta]2H = many Water Line 8[delta] 18O
+ 10 Benjamin and LMWL based on data [delta]2H = 72 others (2004) from precipitation 7.
18e CTG GTT GAT CCT GCC AGT Hillis and Dixon, 1991 18R GTC CCC TTC CGT CAA TTY CTT TAA G Halanych, unpublished 18O
GGA ATR ATG GAA TAG GAC C Halanych et al.