Arid
DOI10.1021/jf072272s
Determination of postharvest Fungicides in fruit juices by solid-phase extraction followed by liquid chromatography electrospray time-of-flight mass spectrometry
Gilbert-Lopez, Bienvenida2; Garcia-Reyes, Juan F.1,2; Mezcua, Milagros1; Molina-Diaz, Antonio2; Fernandez-Alba, Amadeo R.1
通讯作者Fernandez-Alba, Amadeo R.
来源期刊JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
ISSN0021-8561
出版年2007
卷号55期号:26页码:10548-10556
英文摘要

A multiresidue method using liquid chromatography-time-of-flight mass spectrometry (LC-TOFMS) has been developed for the quantitative analysis of five widely used postharvest fungicides (carbendazim, thiabendazole, imazalil, prochloraz, and iprodione) and two of their transformation products (imazalil and prochloraz metabolites) in fruit juices. LC-TOFMS in positive electrospray ionization mode was used to quantify and confirm trace levels of these fungicides in fruit juices. The proposed method consists of a sample treatment step based on solid-phase extraction using hydrophilic-lipophilic-balanced polymer-based reverse-phase SPE cartridges (Oasis HLB) and methanol as an eluting solvent. Fruit-juice extracts spiked at different fortification levels (10 and 20 mu g L(-1)) yielded average recoveries in the range of 71-109% with RSD (%) below 15%. Subsequent identification, confirmation, and quantitation were carried out by LC-TOFMS analysis. The confirmation of the target species was based on accurate mass measurements of protonated molecules ([M + H](+)) and fragment ions, obtaining routine accuracy errors lower than 2 ppm in most cases. The obtained limits of detection (LODs) of the proposed method were in the range of 0.08-0.45 mu g L(-1). Finally, the proposed method was successfully applied to the analysis of 23 fruit juice samples collected from different European countries and the United States, showing the potential applicability of the method in routine analysis. Over 50% of the samples tested contained pesticide residues, but relatively low concentration levels were found.


英文关键词pesticides juice liquid chromatography mass spectrometry electrospray time-of-flight
类型Article
语种英语
国家Spain
收录类别SCI-E
WOS记录号WOS:000251768800006
WOS关键词PESTICIDE-RESIDUES ; GAS-CHROMATOGRAPHY ; DISPERSION ; FOOD ; MICROEXTRACTION ; VEGETABLES ; THIABENDAZOLE ; STRAWBERRY
WOS类目Agriculture, Multidisciplinary ; Chemistry, Applied ; Food Science & Technology
WOS研究方向Agriculture ; Chemistry ; Food Science & Technology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/154669
作者单位1.Univ Almeria, Dept Hydrogeol & Analyt Chem, Pesticide Residue Res Grp, Almeria 04120, Spain;
2.Univ Jaen, Dept Phys & Analyt Chem, Jaen 23071, Spain
推荐引用方式
GB/T 7714
Gilbert-Lopez, Bienvenida,Garcia-Reyes, Juan F.,Mezcua, Milagros,et al. Determination of postharvest Fungicides in fruit juices by solid-phase extraction followed by liquid chromatography electrospray time-of-flight mass spectrometry[J],2007,55(26):10548-10556.
APA Gilbert-Lopez, Bienvenida,Garcia-Reyes, Juan F.,Mezcua, Milagros,Molina-Diaz, Antonio,&Fernandez-Alba, Amadeo R..(2007).Determination of postharvest Fungicides in fruit juices by solid-phase extraction followed by liquid chromatography electrospray time-of-flight mass spectrometry.JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY,55(26),10548-10556.
MLA Gilbert-Lopez, Bienvenida,et al."Determination of postharvest Fungicides in fruit juices by solid-phase extraction followed by liquid chromatography electrospray time-of-flight mass spectrometry".JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 55.26(2007):10548-10556.
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