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| Titel: |
Ultrasonic decomposition of atrazine and alachlor in water. |
| Auteur: |
Koskinen, W. C. Sellung, K. E. Baker, J. M. Barber, B. L. Dowdy, R. H. |
| Verschenen in: |
Journal of environmental science and health. Part B, Pesticides, food contaminants, and agricultural wastes |
| Paginering: | Jaargang 29 (1994) nr. 3 pagina's 581-590 |
| Jaar: |
1994 |
| Inhoud: |
The collapse of ultrasonically-generated cavitation bubbles can result in sonochemical reactions. The kinetics of sonochemical decomposition of alachlor and atrazine in water were determined using a sonicator operating in the continuous mode at maximum output. Alachlor and atrazine solutions, 3.1 nmol L-1, were kept at constant temperature during the sonication. Decomposition at 30°C followed first-order kinetics: k = 8.01 × 10-3 min-1 and 2.10 × 10-3 min-1 for alachlor and atrazine, respectively. It is not clear from the product analysis whether the decomposition was due to a thermal or free radical reaction. However, regardless of the decomposition mechanisms, the extrapolated half-lives (86 and 330 min for alachlor and atrazine, respectively) support the potential development of ultrasonic waves to decompose herbicides in contaminated water. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 10 van 10 gevonden artikelen
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