用参数方程的方法计算氟氯碳化合物的臭氧消耗潜势

CALCULATION OF OZONE DEPLETION POTENTIAL OF HALOCARBONS USING PARAMETRIC EQUATIONS

在研究同类氟氯碳化合物臭氧消耗潜势（ＯＤＰ）之间的差异，探讨ＯＤＰ与有关参数必然的内在联系的基础上，建立起两类求算ＨＣＦＣｓ、ＣＦＣｓ的ＯＤＰ的参数方程。一类是以大气寿命τ为参变量的计算ＯＤＰ的参数方程，与之相应，发展了一种仅含氟氯碳化合物分解反应的简化化学反应机理，以准确、快速的求算氟氯碳化合物的τ，所计算的τ值与文献值相符，在参变量的有效范围内，上式计算的ＯＤＰ与模拟计算值有很好的吻合；另一类是以分解的反应速度常数为参变量求算ＨＣＦＣｓ的ＯＤＰ的参数方程，计算结果表明，与模拟值相比，当用该方程算得的ＯＤＰ计算值小于０．０５时，准确度较高，大于此值则误差较大，但仍可较准确的表出所计算物质ＯＤＰ值的相对大小，数值本身仍有较好的参考价值。

Two kinds of parametric equatoins have been formulated to calculate ozone depletionpotential(ODP)of hydrochlorofluorocarbaons and chlorofluorocarbons based on a study onthe difference in the ODP of same kind of halocarbons and the relation between ODP andrelevant parameters. The parameter used in one of the equations is atmospheric lifetime(τ).Meanwhile, a simplified reaction mechanism consisting of only decomposition reactions ofhalocarbon studied has been developed to calculated τ quickly and accurately. The parame-ters used in another equation are rate constants of the decomposition reactions. ODP can beacquired directly from these equations in the effective range of parameters which are consis-tent with those reported.