Nitrogen

nitrogen stable isotope lab

Stable Isotopes - Nitrogen - 15N/14N

Abundance
14N = 99.63 % atom
15N = 0.37 % atom

Gas analysed
N2

Recommended Scale
Air, material used is Atm-N2 (atmospheric nitrogen gas, absolute isotope ratio (3676±4)x10-6 [Junk & Svec, 1958;Coplen et al.,1992])

Equipment
Europa Geo 20-20 continuous flow coupled with EA
GVI Isoprime coupled to Eurovector EA

    Precision‰ Preferred sample size Minimum sample size Price
SOLIDS
15N/14N&13C/12C organic material 0.3 & 0.1 100μg N
800μg C
20μg N
100μg C
 
15N/14N organic material 0.3 100μg N 20μg N  
LIQUIDS
15N/14N total dissolved N in water 0.3 2mg as N 0.5mg as N  
**Depending on TOC and TON