PMID- 31226227 OWN - NLM STAT- MEDLINE DCOM- 20191025 LR - 20220410 IS - 1097-0010 (Electronic) IS - 0022-5142 (Linking) VI - 99 IP - 14 DP - 2019 Nov TI - Residue behaviours, dissipation kinetics and dietary risk assessment of pyaclostrobin, cyazofamid and its metabolite in grape. PG - 6167-6172 LID - 10.1002/jsfa.9877 [doi] AB - BACKGROUND: Grape is an important fruit consumed either fresh or processed, therefore, fungicide misuse of grape has become an issue of global food safety and human health. Pyraclostrobin, and cyazofamid have been applied to grape frequently. RESULTS: Here a simple QuEChERS (quick, easy, cheap, effective, rugged, and safe) liquid chromatography mass spectrometry technique has been developed and validated for the determination of pyraclostrobin, cyazofamid and its metabolite CCIM in open field grape samples. The recoveries of these three in the range of 0.01 to 5 mg kg(-1) (n = 5) ranged from 73.1% to 97.9%. The relative standard deviations (RSDs) were below 12% for all cases. The limits of quantitation of each analyte was 0.005 mg kg(-1) , which was lower than maximum residue limits of not only pyraclostrobin but also cyazofamid. Not only dissipation kinetics but also residue determination was obtained in grape for those three pesticides. Furthermore, their half-lives in grapes were 10.7-30.1 days, recommending the pre-harvest intervals for these three of 14 days. The calculated hazard quotient and acute hazard index lower than 100% illustrated the safety of intake of grape for the Chinese population for not only long-term but also short-term dietary risk assessment. CONSLUSIONS: The less than 30 day half-life illustrated that pyraclostrobin and cyazofamid could degrade relatively easily in the environment. The long-term and short-term dietary risk assessment also illustrated the intake safety of these three. Thus, a 14 day pre-harvest interval was safe and recommended. The results of this study contributed to environmental protection, food safety and human health. (c) 2019 Society of Chemical Industry. CI - (c) 2019 Society of Chemical Industry. FAU - Pang, Nannan AU - Pang N AD - Laboratory of Pesticide Residues and Environmental Toxicology, School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, P. R. China. FAU - Dou, Xinyu AU - Dou X AD - Laboratory of Pesticide Residues and Environmental Toxicology, School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, P. R. China. FAU - Hu, Jiye AU - Hu J AUID- ORCID: 0000-0001-9365-5847 AD - Laboratory of Pesticide Residues and Environmental Toxicology, School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, P. R. China. LA - eng GR - China Scholarship Council/ PT - Journal Article DEP - 20190826 PL - England TA - J Sci Food Agric JT - Journal of the science of food and agriculture JID - 0376334 RN - 0 (Fungicides, Industrial) RN - 0 (Imidazoles) RN - 0 (Strobilurins) RN - 0 (Sulfonamides) RN - DJW8M9OX1H (pyrachlostrobin) RN - QJC4S2YQ4B (cyazofamid) SB - IM MH - China MH - Consumer Product Safety MH - Drug Residues/*chemistry/metabolism MH - Food Contamination/analysis MH - Fruit/chemistry MH - Fungicides, Industrial/*chemistry/metabolism MH - Half-Life MH - Humans MH - Imidazoles/*chemistry/metabolism MH - Kinetics MH - Risk Assessment MH - Strobilurins/*chemistry/metabolism MH - Sulfonamides/*chemistry/metabolism MH - Tandem Mass Spectrometry MH - Vitis/*chemistry/metabolism OTO - NOTNLM OT - CCIM OT - cyazofamid OT - dietary risk assessment OT - dissipation kinetics OT - mass spectrometry OT - pyraclostrobin EDAT- 2019/06/22 06:00 MHDA- 2019/10/28 06:00 CRDT- 2019/06/22 06:00 PHST- 2019/01/20 00:00 [received] PHST- 2019/05/14 00:00 [revised] PHST- 2019/06/14 00:00 [accepted] PHST- 2019/06/22 06:00 [pubmed] PHST- 2019/10/28 06:00 [medline] PHST- 2019/06/22 06:00 [entrez] AID - 10.1002/jsfa.9877 [doi] PST - ppublish SO - J Sci Food Agric. 2019 Nov;99(14):6167-6172. doi: 10.1002/jsfa.9877. Epub 2019 Aug 26.