Ellis D A, Martin J W, Mabury S A, Hurley M D, Andersen M P Sulbaek, Wallington T J
Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, Canada M5S 3H6.
Environ Sci Technol. 2003 Sep 1;37(17):3816-20. doi: 10.1021/es034136j.
Relative rate techniques were used to study the kinetics of the reactions of Cl atoms and OH radicals with a series of fluorotelomer alcohols, F(CF2CF2)nCH2CH2OH (n = 2, 3, 4), in 700 Torr of N2 or air, diluent at 296 +/- 2K. The length of the F(CF2CF2)n- group had no discernible impact on the reactivity of the molecule. For n = 2, 3, or 4, k(Cl + F(CF2CF2)nCH2CH2OH) = (1.61 +/- 0.49) x 10(-11) and k(OH + F(CF2CF2)nCH2CH2OH) = (1.07 +/- 0.22) x 10(-12) cm3 molecule(-1) s(-1). Consideration of the likely rates of other possible atmospheric loss mechanisms leads to the conclusion that the atmospheric lifetime of F(CF2CF2)nCH2CH2OH (n > or = 2) is determined by reaction with OH radicals and is approximately 20 d.
采用相对速率技术研究了在700托氮气或空气中，稀释剂温度为296±2K时，氯原子和羟基自由基与一系列氟调聚物醇F(CF2CF2)nCH2CH2OH（n = 2、3、4）反应的动力学。F(CF2CF2)n-基团的长度对分子的反应活性没有明显影响。对于n = 2、3或4，k(Cl + F(CF2CF2)nCH2CH2OH) = (1.61±0.49)×10(-11)，k(OH + F(CF2CF2)nCH2CH2OH) = (1.07±0.22)×10(-12) cm3·分子(-1)·秒(-1)。考虑其他可能的大气损失机制的可能速率后得出结论，F(CF2CF2)nCH2CH2OH（n≥2）的大气寿命由与羟基自由基的反应决定，约为20天。
