The quenching of tryptophan fluorescence by dissolved O2 gas was monitored by measuring emission lifetimes at 348 nm in aqueous solutions. Plot between \(\frac{1}{τ}\) vs [O2].The value of quenching rate constant at [O2] = 2.3× 10-2mol dm−3(τ = 1.5× 10-9s) is(\(\tau_o\) = 2.6× 10-9s)?
1
1.2 × 1010 dm3 mol-1 s-1
2
2.6 × 109 dm3 mol-1 s-1
3
1.5 × 1010 dm3 mol-1 s-1
4
0.71 × 109 dm3 mol-1 s-1