Table 1.

Notation used in the saturation-transfer experiment for measuring the reaction rate constant between two moieties A and B

Symbol	Meaning
M0A, M0B	Equilibrium magnetization of A and B in absence of irradiation and chemical exchange
An, Bn	Equilibrium magnetization of A and B in presence of chemical exchange
As, Bs	Equilibrium magnetization of A and B in the presence of chemical exchange and selective irradiation of B
Ac, Bc	Equilibrium magnetization of A and B in the presence of chemical exchange and selective irradiation of the control site
Q	Irradiation spillover quality index: Q =Ac/An
T1A, T1B	The longitudinal relaxation time of A and B in the absence of irradiation and chemical exchange
$T_{1\mathrm{A}}^{\mathrm{sat}}$	The apparent longitudinal relaxation time of A in the presence of chemical exchange and selective irradiation of B