31

12/10/50

The siqnal amplitudes & width of O¹⁷ & D² resonances
were compared at the same magnetic field

O¹⁷ Height = 41.7 ± 2.6 , Width = 40.0 ± 2.4
enriched
H₂O¹⁷
+0.00019M
MnSO₄

D²
1.20N D²O Height = 82 ± 4 Width = 66 ± 4
+3M MnSO₄

a ≡ amplitude

I (I+1) n γ³ / ΔH²
------------------------------------------------------------
I_D(I_D+1) n_D γ³_D / ΔH²_D

= a
-----
a_D

I(I+1) = I_D(I_D+1)(n_D / n)(γ_D / γ)³ {aΔH² / a_DΔH²}

= 2x 1.70/0.1 x 1.45 x 42x40²/82x66² (1+14.5%) x 0.96
correction factor
for difference in
rates

=8.90 (1+14.5%)

I = 2.52 ± 0.[?]
% abundance of O¹⁷ = 0.18 Molarity of O¹⁷ = 55.55 x 0.18 = 0.1