Scienze Agrarie e Ambientali

  Description Method Sample Time
      Size  
        (days)
  Hydrogen (D/H) Isotope Analyses      
   2H of cellulose – duplicate EA-IRMS 0.1 g 28
   2H of cellulose – 20% in duplicate EA-IRMS 0.1 g 28
   2H of water – duplicate equilibration 5 mL 14
   2H and 18O of water – duplicate equilibration 5 mL 14
   Azeotropic distillation of water from plant or soil — Enquire 21
         
  Carbon Isotope Analyses      
   13C of ground plant or soil – duplicate EA-IRMS 0.5 g 21
   13C of ground plant or soil – 20% in duplicate EA-IRMS 0.5 g 21
   13C of ground plant or soil – pre-prepared capsule EA-IRMS Enquire 21
   13C & 15N of ground plant or soil – duplicate EA-IRMS 0.5 g 21
   13C & 15N of ground plant or soil – 20% in duplicate EA-IRMS 0.5 g 21
   13C & 15N of ground plant or soil – pre-prepared capsule EA-IRMS Enquire 21
   13C of atmospheric carbon dioxide (CO2) – per tube CF-IRMS 12 mL 14
   13C of dissolved inorganic carbon (DIC) – duplicate CF-IRMS Enquire 21
         
  Nitrogen Isotope Analyses      
   15N of ground plant or soil – duplicate EA-IRMS 0.5 g 21
   15N of ground plant or soil – 20% in duplicate EA-IRMS 0.5 g 21
   15N of ground plant or soil – pre-prepared capsule EA-IRMS Enquire 21
   15N and 13C of ground plant or soil – duplicate EA-IRMS 0.5 g 21
   15N and 13C of ground plant or soil – 20% in duplicate EA-IRMS 0.5 g 21
   15N and 13C of ground plant or soil – pre-prepared capsule EA-IRMS Enquire 21
   15N of ground plant or soil (15N enriched) – duplicate EA-IRMS 0.2 g 21
         
  Oxygen Isotope Analyses      
   18O of cellulose – duplicate EA-IRMS 0.1 g 28
   18O of cellulose – 20% in duplicate EA-IRMS 0.1 g 28
   18O of water – duplicate equilibration 5 mL 14
   18O and 2H of water – duplicate equilibration 5 mL 14
   Azeotropic distillation of water from plant or soil — Enquire 21
         
  Sulfur Isotope Analyses      
   34S of ground plant or soil – duplicate EA-IRMS 0.5 g 21
   34S of ground plant or soil – 20% in duplicate EA-IRMS 0.5 g 21
   34S of ground plant or soil – pre-prepared capsule EA-IRMS Enquire 21

Le quantità del campione fornite sono solo a scopo indicativo. L’analisi mediante EA-IRMS necessita normalmente  di 1 – 5 mg di quantità di campione. I tempi di consegna dei campioni indicati sono tipici per l’analisi di 40 campioni.