Atmospheric emissions formic acid

Grosjean, D., Formic Acid and Acetic Acid Emissions, Atmospheric Formation, and Dry Deposition at Two Southern California Locations, Atmos. Environ., 26A, 3279-3286(1992). 

Ethanol is decomposed to form ether and ethylene on the alumina catalyst. Formaldehyde and formic acid are produced by the catalytic oxidation of ethanol in an atmosphere containing oxygen. In the course of this catalytic oxidation on a certain kind of catalyst, the excited HCHO is produced and the CTL emission is observed in its relaxation process. 

The following chiral reagents were employed for diastereomer formation before sample application and chromatography on silica gel or silica gel G TLC plates (L)-leucine Af-carboxyanhydride for D,L-dopa-carboxyl- " C separated with ethyl acetate/formic acid/water (60 5 35) mobile phase and detected by ninhydrin [7 f 0.38 (d)/0.56 (l)] [43] Af-trifluoroacetyl-L-prolyl chloride for D,L-amphetamine separated with chloroform/methanol (197 3) and detected by sulfuric acid/formaldehyde (10 1) (Rf 0.49 (d)/0.55 (l)) [44] Af-benzyloxycarbonyl-L-prolyl chloride for D,L-methamphetamine separated with n-hexane/ethyl acetate/acetonitrile/diisopropyl ether (2 2 2 1) and detected by sulfuric acid/formaldehyde (10 1) [/ f 0.57 (l)/0.61 (d)] [44] (l/ ,2/ )-(-)-l-(4-nitrophenyl)-2-amino-1,3-propanediol (levobase) and its enantiomer dextrobase for chiral carboxylic acids separated with chloroform/ethanol/acetic acid (9 1 0.5) and detected under UV (254 nm) light R[ values 0.63 and 0.53 for 5- and / -naproxen, respectively) [45] (5)-(4-)-a-methoxyphenylacetic acid for R,S-ethyl-4-(dimethylamino)-3-hydroxybutanoate (carnitine precursor) with diethyl ether mobile phase [/ f 0.55 R)/0J9 (5)] [46] and (5)-(4-)-benoxaprofen chloride with toluene/acetone (100 10, ammonia atmosphere) mobile phase and fluorescence visualization (Zeiss KM 3 densitometer 313 nm excitation, 365 nm emission) (respective R values of R- and 5-isomers of metoprolol, oxprenolol, and propranolol were 0.24/0.28, 0.32/0.38, and 0.32/0.39) [47]. 

Andreae, M. O. (1985) The emission of sulfur to the remote atmosphere Background pap>er. In The biogeochemical cycling of sulfur and nitrogen in the remote atmosphere (Eds. J. N. Galloway, R. J. Charlson, M. O. Andreae and H. Rodhe). Reidel, Dordrecht, pp. 5-25 Andreae, M. O., R. W. Talbot, T. W. Andreae and R. C. Harriss (1988) Formic and acetic acid over the central Amazon region, Brazil 1. Dry season. Journal of Geophysical Research 93, 1616-1624... 

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