Residue and Risk Assessment of Kresoxim-methyl in Apple Under Field Conditions
International Journal of Nutrition and Food Sciences
Volume 5, Issue 4, July 2016, Pages: 293-296
Received: Jul. 19, 2016; Published: Jul. 20, 2016
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Authors
Qian Xun, Research Centre of Quality and Safety of Agro-products, Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang, China
Chen Yong-da, Research Centre of Quality and Safety of Agro-products, Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang, China
Zheng Zhen-shan, Research Centre of Quality and Safety of Agro-products, Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang, China
Wang Li, Research Centre of Quality and Safety of Agro-products, Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang, China
Zhang Shao-jun, Research Centre of Quality and Safety of Agro-products, Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang, China
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Abstract
A rapid and effective method was developed for determination of kresoxim-methyl residue in apple. Field trials were designed to evaluate the dissipation and residue of kresoxim-methyl in apple at Hebei (China), Shandong (China) and Anhui (China). The dietary exposure and risk assessment were also conducted by using the calculation of risk quotient (RQ). The samples were extracted by Acetone and ethyl acetate, cleaned up by Florisil solid phase extraction column and detected by gas chromatograph with DB-1701 capillary column and electron capture detector. The results showed good average recoveries of 80%-99% with relative standard deviations of 0.9%-1.3% at the spiked level of 0.02, 0.20 and 2.0 mg /kg. The limit of detection (LOD) was 1.0×10-12 g and the limit of quantification (LOQ) was 0.02 mg /kg. The results were found that the half lives of kresoxim-methly in apple of Hebei (China), Shandong (China) and Anhui (China) were 6.09, 12.6 and 10.0 d respectively, and the terminal residue was below MRL (0.2 mg/kg) 14 days after application, the RQ of kresoxim-methyl were far below 1. It predicted that it was safe for human being when kresoxim-methyl was used to control Apple tree diseases.
Keywords
Kresoxim-methyl, Apple, Residue, Risk Assessment
To cite this article
Qian Xun, Chen Yong-da, Zheng Zhen-shan, Wang Li, Zhang Shao-jun, Residue and Risk Assessment of Kresoxim-methyl in Apple Under Field Conditions, International Journal of Nutrition and Food Sciences. Vol. 5, No. 4, 2016, pp. 293-296. doi: 10.11648/j.ijnfs.20160504.19
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