Evidence of inorganic chlorine gases other than hydrogen chloride in marine surface air
- Pszenny, A. A. P.
- Keene, W. C.
- Jacob, Daniel James
- Fan, S.
- Maben, J. R.
- Zetwo, M. P.
- Springer-Young, M.
- Galloway, J. N.
DOIAbstract
We report the first measurements of inorganic chlorine gases in the marine atmosphere using a new tandem mist chamber method. Surface air was sampled during four days including one diel cycle in January, 1992, at Virginia Key, Florida. Concentrations of HCl* (including HCl, ClNO3, ClNO2, and NOCl) were in the range 40 to 268 pptv and concentrations of Cl2* (including Cl2 and any HOCl not trapped in the acidic mist chamber) were in the range <26 to 254 pptv Cl. Concentrations of Cl2* increased during the night, and decreased after sunrise as HCl* concentrations increased by similar amounts. The measurements suggest an unknown source of either HOCl or Cl2 to the marine atmosphere. Photochemical model calculations indicate that photolysis of t...
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