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  • Title: Mutagenicity of the components of ozonated humic substance.
    Author: Matsuda H, Ose Y, Nagase H, Sato T, Kito H, Sumida K.
    Journal: Sci Total Environ; 1991 Apr 15; 103(2-3):129-40. PubMed ID: 1882229.
    Abstract:
    Eight components of humic substances were ozonated. Mutagenic activity was found with TA100 with and without S9 mix for all ozonated components. Ozonated products of p-hydroxybenzaldehyde were separated into five fractions by silica gel chromatography and each fraction subjected to mutagenicity assay. Mutagenic activity was found in the chloroform and chloroform-acetone (1:1) fractions. The compounds in these fractions were identified, and aldehydes such as formaldehyde, acetaldehyde, glyoxal, glyoxylic acid and methyl glyoxal were found to be mutagenic. Mutagenic compounds are present in the polar fraction.
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