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- Title
Field dissipation of trifloxystrobin and its metabolite trifloxystrobin acid in soil and apples.
- Authors
Wang, Chen; Wu, Junxue; Zhang, Yun; Wang, Kai; Zhang, Hongyan
- Abstract
The dissipation of trifloxystrobin and its metabolite trifloxystrobin acid in apples and soil was studied, and the half-life (DT) was estimated in a field study carried out at three different locations for apples and four different locations for soil. Trifloxystrobin was sprayed on apples at 127 g a.i./ha for the dissipation study. Samples of apple and soil for the dissipation experiment were collected at time intervals of 0, 1, 3, 7, 14, 21, 30, and 45 days after treatment. The quantification of residues was done by liquid chromatography-tandem mass spectrometry (LC-MS/MS). The DT of trifloxystrobin ranged from 0.54 to 8.8 and 4.8 to 9.5 days in soil and apples at different latitude sites. Photolysis may be the main dissipation pathway for trifloxystrobin, and the number of sunshine hours may be the main factor affecting the trifloxystrobin dissipation rate in the field. For trifloxystrobin acid residues in soil and apples, it first increased and then began decreasing. It was indicated that the risk of trifloxystrobin application in shorter sunshine hour area should be considered.
- Subjects
TRIFLOXYSTROBIN; METABOLITES; SOIL pollution; FUNGICIDE residues in food; APPLE quality; EFFECT of acid deposition on soils; EFFECT of acids on food; LIQUID chromatography-mass spectrometry
- Publication
Environmental Monitoring & Assessment, 2015, Vol 187, Issue 1, p1
- ISSN
0167-6369
- Publication type
Article
- DOI
10.1007/s10661-014-4100-3