Abstract:
:The laser photolysis/laser induced fluorescence (LP/LIF) technique has been applied to studies of gas-phase mercury (Hg) chlorination. Mercury (I) chloride (HgCl) was been detected via LIF at 272 nm from reactions of elemental Hg with Cl atoms generated from the 193 nm photolysis of carbon tetrachloride. While the formation of HgCl was too fast to be observed on millisecond time scales, the kinetics of the consumption of HgCl have been determined at temperatures characteristic of post-combustion conditions. Rate coefficients and Arrhenius parameters for the reaction of HgCl with Cl2, HCl and Cl atoms were determined. The reaction of HgCl with Cl2 was the fastest reaction studied, while the reaction of HgCl with HCl was the only reaction to show any measurable temperature dependence. Estimates of the rate coefficient for the reaction Hg + Cl --> HgCl were determined using a modeling approach. Comparisons of these new measurements with model predictions are discussed.
journal_name
Chemospherejournal_title
Chemosphereauthors
Taylor PH,Mallipeddi R,Yamada Tdoi
10.1016/j.chemosphere.2005.03.089subject
Has Abstractpub_date
2005-11-01 00:00:00pages
685-92issue
5eissn
0045-6535issn
1879-1298pii
S0045-6535(05)00462-5journal_volume
61pub_type
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