Table of Contents Author Guidelines Submit a Manuscript
Journal of Analytical Methods in Chemistry
Volume 2017, Article ID 7697345, 8 pages
https://doi.org/10.1155/2017/7697345
Research Article

Transfer and Metabolism of Triadimefon Residues from Rape Flowers to Apicultural Products

1Zhejiang Institute for Food and Drug Control, Hangzhou 310052, China
2Institute of Quality and Standard for Agricultural Products, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China

Correspondence should be addressed to Hu Zhang; nc.ca.saaz.liam@uhgnahz

Received 5 June 2017; Accepted 25 July 2017; Published 6 September 2017

Academic Editor: Josep Esteve-Romero

Copyright © 2017 Ying-Hong Li et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

This paper presents a study on the transfer and metabolism of triadimefon residues from rape flowers to apicultural products. In the field trials, honeybee colonies were placed in four rape greenhouses treated with triadimefon on standard dosage. Apicultural products (pollen, honey, and royal jelly) were collected on a regular basis. Sample preparation and extraction procedure were established. HPLC/ESI-MS/MS method was validated. The respective residues of triadimefon and metabolite triadimenol were  mg/kg and  mg/kg in pollen on the 18th day, and both had reached the limits of detection in honey on the 24th day, while they were  mg/kg and  mg/kg in royal jelly on the 22nd day. Mathematical curve fitting studies were further investigated. On the basis of recommended dosage, the degradation half-lives of triadimefon in pollen, honey, and royal jelly were about 0.7, 12.5, and 19.5 days, respectively. Transfer of triadimefon residues from rape flowers to apicultural products diminished over spraying time. The residues of triadimefon and metabolite triadimenol in pollen were about 10 times higher than those in honey and jelly. Time to attain the maximum permissible limit of pollen in the European Union was 14.9 days, predicted from the index function.