Photodegradation of atrazine in water | ||
| Journal of Pest Control and Environmental Sciences | ||
| Volume 12, Issue 1, 2004, Pages 73-84 PDF (337.57 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/jpces.2004.459478 | ||
| Authors | ||
| Hashem F. H. Hafez* 1; Wolfram H. P. Thiemann2 | ||
| 1Plant Protection Dept., Faculty of Agric., Minia Univ., Egypt | ||
| 2Physical & Environm. Chemistry, Bremen Univ., Germany | ||
| Abstract | ||
| Photodegradation studies of atrazine were carried out under UV radiation (λ 254 nm, 24 h), sunlight (one month, 8 h / day) or dark conditions in different types of water. Residue analysis of the compound in the different water samples was done using high performance liquid chromatography (HPLC). The rate of photodecomposition in different water samples was followed first-order kinetics with different rate constants (k) and high r² values. The loss of atrazine in the water samples under dark conditions was negligible. Whereas, the dissipation of the compound after exposure to UV radiation was found to be higher than that under sunlight conditions. The photodegradation rate of atrazine in different types of water after exposure to either UV radiation or sunlight was decreased in the following order: river water > canal water > distilled water. HPLC analysis showed unknown peaks in river and canal water either exposed to UV radiation or sunlight. | ||
| Keywords | ||
| Atrazine; photodegradation; HPLC; water quality | ||
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