Dissipation Rates and Final Residues of Kresoxim-Methyl in Strawberry and Soil

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• 作者：Chunhong Jia (1)
  Xiaodan Zhu (1)
  Ercheng Zhao (1)
  Min He (1)
  Pingzhong Yu (1)
  Li Chen (1)
  
• 关键词：Kresoxim ; methyl ; Strawberry ; Soil ; Residue ; GC–MS
• 刊名：Bulletin of Environmental Contamination and Toxicology
• 出版年：2013
• 出版时间：February 2013
• 年：2013
• 卷：90
• 期：2
• 页码：264-267
• 全文大小：194KB
• 参考文献：1. Aguilera A, Valverde A, Camacho F, Boulaid M, Garcia-Fuentes L (2012) Effect of household processing and unit to unit variability of azoxystrobin, acrinathrin and kresoxim-methyl residues in zucchini. Food Contr 25(2):594-00 CrossRef
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  3. Fenoll J, Ruiz E, Hellin P (2009) Strobilurin residue levels in greenhouse-grown pepper and under cold-storage conditions. J Sci Food 89(2):299-03 CrossRef
  4. Li JZ, Wu X, Hu JY (2006) Determination of fungicide kresoxim-methyl residues in cucumber and soil by capillary gas chromatography with nitrogen-phosphorus detection. J Environ Heal Part B Pestic Food Conta Agric Wast 41(4):427-36 CrossRef
  5. Rab?lle M, Spliid NH, Kristensen K, Kudsk P (2006) Determination of fungicide residues in field-grown strawberries following different fungicide strategies against gray mold ( / Botrytis cinerea). J Agric Food Chem 54(3):900-08 CrossRef
  6. Zhang CQ, Zhang Y, Zhu GN (2008) The mixture of kresoxim-methyl and boscalid, an excellent alternative controlling grey mould caused by Botrytis cinerea. Ann Appl Biol 153(2):205-13
  7. Zhang ZH, Li HY, Wu M, Yuan YW, Hu XQ, Zheng WY (2009) Residue and risk assessment of chlorothalonil, myclobutanil and pyraclostrobin in greenhouse strawberry. Chin J Pestici Sci 11:449-55
  
• 作者单位：Chunhong Jia (1)
  Xiaodan Zhu (1)
  Ercheng Zhao (1)
  Min He (1)
  Pingzhong Yu (1)
  Li Chen (1)
  
  1. Institute of Plant and Environment Protection, Beijing Academy of Agricultural and Forestry Sciences, Beijing, 100097, China
  
• ISSN：1432-0800

文摘

In order to study the dissipation rates and final residues of kresoxim-methyl in strawberry and soil, two independent filed trials were performed in Beijing China. The application rates are set at 195?g of active gradient per hectare. A simple analytical method has been developed for the determination of kresoxim-methyl in strawberry and soil. Kresoxim-methyl residues were extracted with acetonitrile from strawberry and soil samples which is determined by gas chromatography coupled with mass spectrometry detection (GC–MSD). The recoveries of kresoxim-methyl in strawberry and soil were observed from 78.9?% to 104.5?% at fortification levels of 0.01-.5?mg/kg with relative standard deviations of 4.3?%-.3?%. The reported limits of detection were 0.05 and 0.01?mg/kg for strawberry and soil, respectively. The results showed that kresoxim-methyl dissipation in strawberry could be described as first-order equation with the half-life time of 6.24 and 6.91?days. 14?days later, the dissipation rate is 84.9?% and 83.3?%, respectively. The final residues of kresoxim-methly in the strawberry were in the range of 2.7-.8?mg/kg at pre-harvest intervals of 1, 3, 5, 7?days which is below the Japan maximum residue limits (MRLs) standards (5?mg/kg in strawberry).