Division of Agricultural Chemicals, Indian Agricultural Research Institute, New Delhi, India.
J Environ Sci Health B. 2010 Feb;45(2):123-7. doi: 10.1080/03601230903471910.
Metabolism of (14)C-azoxystrobin was studied in water at pH 4, 7 and 9. The study suggested that volatilization losses of azoxystrobin were very low (3%) during 130 days of incubation. Only 2.5-4.2% of azoxystrobin was mineralised to CO(2) and pH of water did not have much effect on rate of mineralisation. The dissipation of azoxystrobin in water of all the three pHs followed first order kinetic with half-life values ranging from 143 to 158 d; degradation was the fastest at pH 9. Azoxystrobin acid, a major metabolite, was detected 4-7 day onwards and its concentration increased up to 130 days. The formation of azoxystrobin acid was more and faster under alkaline (pH 9) condition than neutral (pH 7) or acidic (pH 4) conditions.
在 pH 值为 4、7 和 9 的水中研究了（14）C-唑菌酯的代谢情况。研究表明，唑菌酯在 130 天的孵化期内挥发损失非常低（3%）。只有 2.5-4.2%的唑菌酯被矿化为 CO(2)，并且水的 pH 值对矿化速率没有太大影响。在所有三种 pH 值的水中，唑菌酯的消解均遵循一级动力学，半衰期值范围为 143 至 158 天；在 pH 值为 9 时，降解速度最快。唑菌酯酸是一种主要的代谢物，在第 4-7 天开始检测到，其浓度在 130 天内增加。在碱性（pH 值 9）条件下，唑菌酯酸的形成更多且更快，而在中性（pH 值 7）或酸性（pH 值 4）条件下则形成较少且较慢。
