p. 359-364A method for the determination of gaseous hydrogen peroxide in ambient air is described. The cryogenic sampling technique (-45~ employed represents an improvement compared with the impinger technique by diminishing artifacts which are bound to liquid phase production and decomposition, respectively. Results are given of H202 measurements from October 1984 to July 1985 in Dortmund (FRG), with mean concentrations of about 30 ppt (v/v). Preliminary results obtained with a coated denuder as a sampling device are also presented
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