Fluorometric Determination of Acrolein and Its Related Compounds in Atmosphere (II)

Abstract

The fluorometric analysis with m-aminophenol was developed to determine acrolein and its related compounds in atmospheric environment. This investigation will be devoted primarily to the problem of air sampling with impingers.
The collection yield of acrolein increased in the presence of hydroxylamine hydrochloride to the absorbent and was approximately 98% under the following conditions. 30 mg of hydroxylamine hydrochloride was added to 10 ml of 1 M hydrochloric acid containing 30 mg of m-aminophenol and 30 mg of sulfamic acid, and this solution was used as the absorbent. Three impingers each of which contained 10 ml of this absorbent were connected in series. The sample gas was passed through three impingers at 0. 6l/min.
The blank value increased under the influence of light. Consequently, it has been reduced to onefourth by wrapping up impingers with aluminium foil.
The results of m-aminophenol method (m-A) satisfactorily corresponded to 4-hexylresorcinol method (4-HR) in concentration from 10 to 100 ppb. The correlation coefficient was 0. 991 (n=15). Since the coefficient of variation of m-A method and 4-HR method were 3. 5% and 17.5%, it was presumed that acrolein was quantitatively, determined by m-A method more accurately 4-HR method.
m-A method is suitable for the analysis of acrolein and its related compounds in the atmosphere ranging in concentration from 1 to 10 ppb.