Degradation of o-Allylphenol and p/o-Butanoylphenol in Soil Under Laboratory Conditions

WU Xian1, HU Ji-ye1, ZHANG Wen-ji2, LI Jian-zhong1(1.Research Centre for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China;2.College of Science, China Agricultural University, Beijing 100094, China)

o-Allylphenol; p/o-Butanoylphenol; soil; degradation kinetics; influence factors

o-Allyphenol and p/o-Butanoylphenol both,new fungicides,simulated the active compounds structure in Gingko (Gingko biloba L). were exploited and developed by our own country. They were patented and registered by Chinese legislation, and now in large scale production. No works have been found in the literature on their environmental chemical behavior of their degradation in soil. Under laboratory conditions, degradation of o-Allylphenol and p/o-Butanoylphenol in three kinds of soil including black Soil from Northeast China, cinnamon soil from Beijing, and Red soil from Jiangxi Province of China was studied by employing HPLC equipped with UV-detector. The results showed that the bio-degradation of o-Allylphenol and p/o-Butanoylphenol in these three soils was playing a leading role and taking place easily in unsterilized soil, T0.5 was among 10.26 h~2.51 d, while in sterilized soil , T0.5 was among 15.13~43.9 d. They degraded most quickly in black soil in which microbes were in more active, since black soil has much organic matter and is alkaline soil. The degradation rate follows a pseudo-first-order kinetics, and reduced with increasing of soil water content and spiking the dextrose in soil. This work was an attempt to give a contribution to the knowledge of the environmental safety evaluation of the two new fungicides.