NDLI: Gradual Fall of s-Triazine Herbicides in Drinking and Wastewater Samples as Influenced by Light and Temperature

Content Provider	Springer Nature Link
Author	Vela, Nuria Navarro, Ginés Giménez, M José Navarro, Simón
Copyright Year	2004
Abstract	The effect of light and temperature on the dissipation of four s-triazine herbicides (terbuthylazine, simazine, atrazine and prometryn) was studied in drinking and wastewaters during long-term laboratory incubation (4 months), and by comparing the results with those obtained in purified water (Milli-Q). Residues were analyzed by GC-NPD and confirmed by GC-MSD. A micro on-line method for isolating the herbicide residues was used. The results showed that temperature and light had a certain influence on the behaviour of the s-triazine herbicides. In drinking water, prometryn dissipated more rapidly than the other compounds under all laboratory conditions (t $_{1/2}$= 75–128 days), while atrazine showed the highest degree of persistence (t $_{1/2}$= 132–227 days). In general, atrazine was the least (t $_{1/2}$= 90–142 days) and simazine the most (t $_{1/2}$= 118–278 days) persistent compound in Milli-Q and wastewater. Only in the case of atrazine in drinking water was the remaining percentage at the end of the experiment higher than 50% (53–69%). Dissolved organic substances in wastewater (DOC, 53.3 mg l$^{−1}$) appear to be particularly important in the photosensitization process. The time required to reach the maximum admissible concentration (MAC) according to European legislation (0.1 μg l$^{−1}$) ranged from 3 to 10 years for prometryn and atrazine, respectively, in drinking water depending on the used conditions.
Starting Page	3
Ending Page	19
Page Count	17
File Format	PDF
ISSN	00496979
Journal	Water, Air, and Soil Pollution
Volume Number	158
Issue Number	1
e-ISSN	15732932
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	2004-01-01
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Hydrogeology Atmospheric Protection/Air Quality Control/Air Pollution
Content Type	Text
Resource Type	Article
Subject	Ecological Modeling Environmental Chemistry Pollution Environmental Engineering Water Science and Technology

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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