title: Aldehydes as mutagens formed by ozonation of humic substances.
abstract: Humic substances and p-hydroxybenzaldehyde, one of their components, were ozonated and quantitative analysis of the mutagenic aldehydes (formaldehyde, acetaldehyde, glyoxal, glyoxylic acid and methylglyoxal) was performed. Glyoxal and glyoxylic acid were the main mutagenic compounds. The ozone-treated solutions were flowed through a granular activated carbon (GAC) column and the KMnO4 consumed of the effluent decreased to about 40-50%. Most of the aldehydes formed by ozonation reduced, but glyoxal increased.
authors.affiliation: Mie University Hospital, Tsu City, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Matsuda
authors.forename: T
authors.initials: T
authors.lastname: Sato
authors.forename: H
authors.initials: H
authors.lastname: Nagase
authors.forename: Y
authors.initials: Y
authors.lastname: Ose
authors.forename: H
authors.initials: H
authors.lastname: Kito
authors.forename: K
authors.initials: K
authors.lastname: Sumida
mesh_terms: D000079:Acetaldehyde / Q000032:analysis; D000447:Aldehydes / Q000032:analysis / Q000737:chemistry*; D005557:Formaldehyde / Q000032:analysis; D006037:Glyoxal / Q000032:analysis; D006038:Glyoxylates / Q000032:analysis; D006812:Humic Substances; D007564:Japan; D009153:Mutagens / Q000032:analysis / Q000737:chemistry*; D010126:Ozone; D011765:Pyruvaldehyde / Q000032:analysis; D012987:Soil / Q000032:analysis
chemical_list: D000447:Aldehydes; D006038:Glyoxylates; D006812:Humic Substances; D009153:Mutagens; D012987:Soil; D005557:Formaldehyde; D006037:Glyoxal; D010126:Ozone; D011765:Pyruvaldehyde; D000079:Acetaldehyde; C031150:glyoxylic acid