C  INCLUDE FILE  HGGASCHM.PRM
C
C  CONTAINS: Hg gas-phase chemistry parameters for PMCAMx-Hg
C
c----CAMx v7Beta6 190902
C
C     Copyright 2003
C     AER, Inc.
C
C Revision History: 
C***********************************************************************
C   Version 1.0 written March 2003 by Prakash Karamchandani, AER       *
C   Updated May 2011, Prakash Karamchandani, Ramboll                   * * 
C*********************************************************************** 

! 2nd order rate constants for Hg(0) gas-phase reactions (mol/cc)-1 s-1

! Rate constant for reaction with O3
      REAL, PARAMETER :: RKO3   = 3.0E-20

! Rate constant for reaction with OH radical
      REAL, PARAMETER :: RKOH   = 8.7E-14

! Rate constant for reaction with H2O2
      REAL, PARAMETER :: RKH2O2 = 8.5E-19

! Rate constants for reaction with bromine species
      REAL*8, PARAMETER :: RK1BR = 3.6D-13  ! Hg0 + Br => HgBr
      REAL*8, PARAMETER :: RK2BR = 3.9D+09  ! HgBr => Hg0 + Br
      REAL*8, PARAMETER :: RK3BR = 2.5D-10  ! HgBr + Br => HgBr2
      REAL*8, PARAMETER :: RK4BR = 2.5D-10  ! HgBr + OH => HgBrOH
      REAL*8, PARAMETER :: RKBRO = 1.0D-15  ! Hg0 + BrO => HgO + Br

! Constant for ppm to molecules/cc conversion factor
      REAL, PARAMETER :: COEF1 = 7.33981E+15    ! (degK/atm)(mpcc/ppm)

C***********************************************************************