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A new technique for measuring tropospheric formaldehyde [CH 2 O]
Author(s) -
Lowe D. C.,
Schmidt U.,
Ehhalt D. H.
Publication year - 1980
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/gl007i010p00825
Subject(s) - troposphere , mixing ratio , atmospheric sciences , formaldehyde , environmental science , mixing (physics) , meteorology , climatology , geology , chemistry , physics , organic chemistry , quantum mechanics
A high performance liquid chromatographic technique has been used to determine the CH 2 O mixing ratio of tropospheric air. The technique has demonstrated adequate sensitivity and stability for measurements of the low CH 2 O mixing ratios expected at elevated altitudes. CH 2 O mixing ratios from a series of air samples collected at the surface around Jülich, West Germany averaged 1.3 ± 0.7 ppbv over the period August 1979 to February 1980. Air samples were also collected during several tropospheric aircraft flights up to about 5 km and CH 2 O mixing ratios ranged between 0.3 and 0.5 ppbv below and less than 0.1 ppbv above the inversion.