1999
DOI: 10.1016/s1383-5718(99)00069-8
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Mutagenic activity of 2-phenylbenzotriazole derivatives related to a mutagen, PBTA-1, in river water

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Cited by 31 publications
(23 citation statements)
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“…Eight kinds of 2-phenylbenzotriazole-type compounds (PBTAs) were isolated and identified from water samples collected from several river waters in Japan, and these compounds showed strong mutagenicity in S. typhimurium YG 1024 with S9 mix [45][46][47][48][49][50]. It was reported that the mutagens were presumedly formed from azo dyes used as an industrial material for dyeing by reduction and chlorination during industrial processes in dyeing factories and treatment at sewage plants as shown in Fig.…”
Section: Azo Dyes and Their Derivativesmentioning
confidence: 99%
“…Eight kinds of 2-phenylbenzotriazole-type compounds (PBTAs) were isolated and identified from water samples collected from several river waters in Japan, and these compounds showed strong mutagenicity in S. typhimurium YG 1024 with S9 mix [45][46][47][48][49][50]. It was reported that the mutagens were presumedly formed from azo dyes used as an industrial material for dyeing by reduction and chlorination during industrial processes in dyeing factories and treatment at sewage plants as shown in Fig.…”
Section: Azo Dyes and Their Derivativesmentioning
confidence: 99%
“…73) were identified as environmental pollutants endowed with mutagenic activity on Salmonella [303]. Considering that genotoxic compounds may play a role in the development of various diseases such as cancer, SAR analysis on PBTAs, all showing comparable mutagenicity, highlighted the relevance for a primary amino group [304e308], along with the planarity of the 2-phenylbenzotriazole ring and halogen groups [309].…”
Section: Mutagenic Antioxidant and Antiemetic Activity Of Benzotriazolementioning
confidence: 99%
“…The dyes end up in the water bodies due mainly to the use of the activated sludge treatment in the effluent treatment plants, which has been shown to be ineffective in removing the toxicity and coloring of some types of dye [33,60,66,67]. Moreover, the reduction of azo dyes by sodium hydrosulfite and the successive chlorination steps with hypochlorous acid, can form 2-benzotriazoles fenilbenzotriazol (PBTA) derivatives and highly mutagenic aromatic amines, often more mutagenic than the original dye [68]. In an aquatic environment, this dye reduction can occur in two phases: 1) The application of reducing agents to the newly-dyed fibers to remove the excess unbound dye, which could lead to "bleeding" of the fabrics during washing, and 2) The use of reducing agents in the bleaching process, in order to make the effluent colorless and conform with the legislation.…”
Section: Finishing and Waste Watermentioning
confidence: 99%