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GNS Science

GNS Stable Isotope Laboratory

Stable Isotopes - Deuterium - D/H

Abundance –
1H = 99.985 % atom
2H (D) = 0.015 % atom
3H (T) =  10-16 % atom (radioactive, analysed at the GNS Tritium Lab)

Gas analysed –
H2

Recommended Scale –
VSMOW (Standard Mean Ocean Water, absolute isotope ratio (155.76 ± 0.05) x 10-6 [Hagemann et al., 1970])

Equipment –
Europa Geo 20-20 dual inlet for H2 gas samples derived from rock samples
Europa Geo 20-20 continuous flow coupled with CSIA-GC for various gas and liquid samples
GVI Isoprime coupled with PyrOH for water samples

Precision‰ Preferred Minimum Price
samples sample
size size
SOLIDS
D hydrosilicates 5 100mg 50mg  
                 
LIQUIDS
D water 1 2ml 0.5ml  
D & 18O water 1.0 & 0.1 5ml 1ml  
 
GAS
D  hydrogen 1 5ml STP* 1ml STP*  
D  methane 3 5ml STP* 1ml STP*  
D & 13C methane 3 & 1 10ml STP* 2ml STP*  
*Standard Temperature and Pressure

 

The Active Earth : Earth Resources : Using the Atom : Earth History : Oceans at GNS

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