Screening of grapes and wine for azoxystrobin, kresoxim-methyl and trifloxystrobin fungicides by HPLC with diode array detection

被引:56
作者
Abreu, SD [1 ]
Correia, M [1 ]
Herbert, P [1 ]
Santos, L [1 ]
Alves, A [1 ]
机构
[1] Univ Porto, Fac Engn, LEPAE, DEQ, P-4200465 Oporto, Portugal
来源
FOOD ADDITIVES AND CONTAMINANTS PART A-CHEMISTRY ANALYSIS CONTROL EXPOSURE & RISK ASSESSMENT | 2005年 / 22卷 / 06期
关键词
QoI-fungicides; grapes; wines; method validation; HPLC; GC/MS;
D O I
10.1080/02652030500137918
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
The Quinone outside Inhibitors (QoI) are one of the most important and recent fungicide groups used in viticulture and also allowed by Integrated Pest Management. Azoxystrobin, kresoxim-methyl and trifloxystrobin are the main active ingredients for treating downy and powdery mildews that can be present in grapes and wines. In this paper, a method is reported for the analysis of these three QoI-fungicides in grapes and wine. After liquid-liquid extraction and a clean-up on commercial silica cartridges, analysis was by isocratic HPLC with diode array detection (DAD) with a run time of 13 min. Confirmation was by solid-phase micro-extraction (SPME), followed by GC/MS determination. The main validation parameters for the three compounds in grapes and wine were a limit of detection up to 0.073 mg kg(-1), a precision not exceeding 10.0 % and an average recovery of 93 % +/- 38.
引用
收藏
页码:549 / 556
页数:8
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