UO22+ excited state quenched by SCN–

UO₂²⁺ quenched by SCN^–
Solvent : H₂O, pH 2.3, ionic strength 0.007

k_q = 1.1 x 10¹⁰(L mol^–1 s^–1)

Mechanism: reductive electron transfer
Experimental methods: laser flash, luminescence, single shot signal
Lifetime in the absence of quencher, air saturated = 1.5 micro sec.
Comments: S as NO₃^– salt

UO₂²⁺ quenched by SCN^–
Solvent : H₂O, 1 mol/L H₃PO₄, ionic strength 0.09

k_q = 2.0 x 10⁹(L mol^–1 s^–1)

Mechanism: reductive electron transfer
Experimental methods: laser flash, luminescence, single shot signal
Lifetime in the absence of quencher, air saturated = 160 micro sec.
Comments: S as NO₃^– salt

UO₂²⁺ quenched by SCN^–
Solvent : H₂O, 1 mol/L HNO₃, ionic strength 1

k_q = 7.4 x 10⁹(L mol^–1 s^–1)

Mechanism: reductive electron transfer
Experimental methods: laser flash, luminescence, single shot signal
Lifetime in the absence of quencher, air saturated = 2.8 micro sec.
Comments: S as NO₃^– salt