DeVaull - NEIWPCC

Exponential Decay: Data Analysis & ScalingConcentration ntimespaceLτRR=⎛ R⎜i ⋅ H=⎝θw⋅ kDeffww⋅ Hθ ⋅ kiw⎞⎟⎠iSimple solutions (exponential decay)apply in some simplified geometriesOther solutions (algebraic, numerical)also used.Published and available ratesdefined or re-defined in terms of k w .θ w - soil moisture; k w - first-order waterphase rate; D eff - effective diffusioncoefficient, H - Henry’s law coefficient; R -soil/vapor partitionother conditions similar: aerobic throughout,readily degradable & bioavailable chemicals7