Stable Isotope and Palæoclimate Analysis Laboratory - SPA Lab
 

Analytical Services - Standards

International Standards - Value

Name NIST RM# Composition δ13CVPDB SD δ15NAIR SD δ18O SD δ2HVSMOW SD
GISP 8536 Water         -24.8‰VSMOW 0 -190‰ 0.2
SLAP2   Water         -55.50 ‰ VSMOW 0.02 -427.5‰ 0.3
VSMOW   Water         0 ‰VSMOW 0.02 0 ‰ 0.3
IAEA-CO-1   Marble +2.492‰       -2.4‰VPDB 0.1    
IAEA-CO-8   Calcite -5.764‰ 0.032     -22.7‰VPDB 0.2    
LSVEC   Lithium Carbonate -46.6‰ 0.2     -26.7‰VPDB 0.2    
NBS 18   Calcite -5.014‰ 0.035     -23.2‰VPDB 0.1    
NBS 19   TS-Limestone +1.95‰       -2.20‰VPDB      
IAEA-601   Benzoic Acid         +23.3‰VSMOW 0.3    
IAEA-CH-6 8542 Sucrose -10.449‰ 0.033            
IAEA-CH-7   Polyethylene -32.151‰ 0.05         -100.3‰ 2
IAEA-NO-3 8549 Potassium Nitrate     +4.7‰ 0.2 +25.6‰VSMOW 0.4    
USGS32 8558 Potassium Nitrate     +180‰ 1 +25.7‰VSMOW 0.4    
USGS34 8568 Potassium Nitrate     -1.8‰ 0.2 -27.9‰VSMOW 0.6    
USGS40 8573 L-glutamic acid -26.389‰ 0.042 -4.5‰ 0.1        
USGS41 8574 L-glutamic acid +37.626‰ 0.049 +47.6‰ 2        

 

In House Standards - Value

   Mean  Mean  Mean  Mean 
Name Type δ13C/12CVPDB SD δ15N/14NAIR SD δ18O/16O SD δ2H/1HVSMOW SD
Saratoga DI 2012A Water         -9.25‰VSMOW 0.06 -62.1‰ 1.5
Saratoga DI 2013A Water         -9.26 ‰ VSMOW 0.06 -62.9‰ 1.5
Saratoga snowA Water         -30.04‰VSMOW 0.07 -227.9‰ 1.7
Saskatoon snowA Water         -23.17‰VSMOW 0.04 -177.9‰ 1.4
98 Sigma-Aldrich Carbonate -37.83‰ 0.07     -22.78‰VPDB 0.02    
Acros 98 light Carbonate -11.68‰ 0.01     -30.71‰VPDB 0.09    
Aldrich-99%A Carbonate -17.54‰ 0.09     -20.82‰VPDB 0.18    
SPA tufa-1A Carbonate +8.09‰ 0.23     -6.91‰VPDB 0.1    
Thermo Merck Carbonate -49.57‰ 0.08     -18.44‰VPDB 0.04    
YAX-stalagmite-1A Carbonate -12.62‰ 0.08     -5.61‰VPDB  0.12    
Costech acetanilideA Elemental Analysis -33.99‰ 0.07 -.96‰ 0.04        
Costech atropineA Elemental Analysis -21.56‰ 0.06 .26‰ 0.05        
NIST 1547A Elemental Analysis -26.17‰ 0.1 +1.57‰ 0.06        
SPA cocoaA Elemental Analysis -30.20‰ 0.04 +5.02‰ 0.12        
SPA corn flourA Elemental Analysis -11.99‰ 0.04 +1.56‰ 0.21        
SPA green teaA Elemental Analysis -26.80‰ 0.08 +.55‰ 0.05        

 

International Standards - Percent Composition

Name NIST RM# Composition Carbon % Nitrogen % Oxygen % Hydrogen %
IAEA-601   Benzoic Acid 68.85   26.2  
IAEA-CH-6 8542 Sucrose 42.11   51.41  
IAEA-CH-7   Polyethylene 85.63     14.37
IAEA-NO-3 8549 Potassium Nitrate   13.8 47.5  
NBS 18   Calcite 12   0  
NBS 19   TS-Limestone 12   0  
USGS32 8558 Potassium Nitrate   13.8 47.5  
USGS34 8568 Potassium Nitrate   13.8 47.5  
USGS40 8573 L-glutamic acid 40.8 9.52    
USGS41 8574 L-glutamic acid 40.8 9.5    

 

In House Standards - Percent Composition

Name Carbon % SD%C Nitrogen % SD%N
Costech acetanilide 71.26 0.29 10.49 0.03
Costech atropine 71.03 0.87 4.93 0.09
NIST 1547A 47.39 0.08 2.81 0.01
SPA_CocoaA 52.61 3.59 3.8 0.26
SPA_CornFlourA 41.82 0.28 1.24 0.06
SPA_GreenTeaA 48.77 0.15 3.77 0.02
A A A