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| Environmental behaviors of picoxystrobin in soils and water |
| Received:January 18, 2016 |
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| KeyWord:picoxystrobin;photocatalytic degradation;volatilization;leaching |
| Author Name | Affiliation | E-mail | | LUO Xiang-wen | College of Plant Protection, Hunan Agricultural University, Changsha 410128, China
Management of Horticultural Crop of Hunan Province, Hunan Plant Protection Institute, Hunan Academy of Agricultural Science, Changsha 410125, China | | | YAN Qing-ping | Management of Horticultural Crop of Hunan Province, Hunan Plant Protection Institute, Hunan Academy of Agricultural Science, Changsha 410125, China | | | CHEN Wu-ying | Management of Horticultural Crop of Hunan Province, Hunan Plant Protection Institute, Hunan Academy of Agricultural Science, Changsha 410125, China | | | CHEN Ang | Management of Horticultural Crop of Hunan Province, Hunan Plant Protection Institute, Hunan Academy of Agricultural Science, Changsha 410125, China | | | LI Zong-yun | Management of Horticultural Crop of Hunan Province, Hunan Plant Protection Institute, Hunan Academy of Agricultural Science, Changsha 410125, China | | | YANG Fang | Management of Horticultural Crop of Hunan Province, Hunan Plant Protection Institute, Hunan Academy of Agricultural Science, Changsha 410125, China | | | LIU Yong | College of Plant Protection, Hunan Agricultural University, Changsha 410128, China
Management of Horticultural Crop of Hunan Province, Hunan Plant Protection Institute, Hunan Academy of Agricultural Science, Changsha 410125, China | haoasliu@163.com |
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| Abstract: |
| Picoxystrobin is mainly used in controlling diseases in grain crops. However, its environmental behaviors are still not well understood. Here we investigated leaching, photocatalytic degradation and volatilization of picoxystrobin using liquid extraction combined with high performance liquid chromatography(LE-HPLC) detection. There was no volatilization of picoxystrobin detected in water and three typical soils. The half-life of picoxystrobin in photocatalytic degradation were 26.70 h on the surface of fluvo-aquic soil, 32.80 h on cinnamon soil, 2.80 h on red soil, and 3.20 h in water. The migration of picoxystrobin was 0.083, 0.08, and 0.25 in fluvo-aquic soil, cinnamon soil, and red soil, respectively. These results demonstrate that picoxystrobin is stable and accumulates in soil with long-term and frequent applications, but is easily degraded in water. |
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