Abstract:
:The decomposition products and mutagenic activity in Salmonella typhimurium strains TA98, TA100 and TA104 in the presence and absence of S9 mix of linear dodecylbenzenesulfonate (DBS) in aqueous solution after ozone treatment alone or simultaneous treatment with ozone and ultraviolet (UV) irradiation (ozone/UV treatment) were investigated. The decomposed DBS solutions after these treatments for 4 h were mutagenic for strains TA98, TA100 and TA104 both with and without S9 mix, but this mutagenicity disappeared rapidly during further ozone/UV treatment. Mutagenicity of the decomposed solution of DBS, however, was not substantially decreased by treatment with ozone alone. Formaldehyde and glyoxal were identified as the decomposition products of DBS in water by high-performance liquid chromatography after treatment with 2,4-dinitrophenylhydrazine. Although these two compounds were mutagenic for strain TA104 both with and without S9 mix, they disappeared after further ozone/UV treatment but not after ozone treatment alone. These results indicate that ozone/UV treatment is an effective procedure for purifying drinking water.
journal_name
Chem Pharm Bull (Tokyo)journal_title
Chemical & pharmaceutical bulletinauthors
Murakami K,Matsumoto H,Kinouchi T,Ohnishi Ydoi
10.1248/cpb.40.1597subject
Has Abstractpub_date
1992-06-01 00:00:00pages
1597-600issue
6eissn
0009-2363issn
1347-5223journal_volume
40pub_type
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