Atmospheric lifetimes and global warming potentials of atmospherically T persistent N(CxF2x+1)3, x = 2–4, perfluoroamines

Laboratory studies of the gas-phase O(1D) reaction and UV photolysis for N(CxF2x+1)3, x = 2–4, and an evaluation of their atmospheric lifetimes and global warming potentials (GWPs) is reported. The O(1D) + PFA reactive rate coefficient was measured to be (10−12 cm3 molecule−1 s−1) 1.10 ± 0.10, 1.36 ± 0.10, and 1.69 ± 0.11 and the UV photodissociation yield, ( ) × ( ) , at 193 nm was measured to be (10−23 cm2 molecule−1) 1.37, < 1, < 15 for N(C2F5)3, N(C3F7)3, and N(C4F9)3, respectively. Including estimated Lyman-α photolysis leads to total global atmospheric lifetimes of > 3000 years. GWPs on the 100-year time-horizon are estimated to be 9900, 8700, and 7800 for N(C2F5)3, N(C3F7)3, and N(C4F9)3, respectively.