Lc/Esi/Ms/Ms determination of postharvest fungicide residues in citrus juices.
Lc/Esi/Ms/Ms determination of postharvest fungicide residues in citrus juices.
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DOI：
10.1016/j.lwt.2010.04.010
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发表时间：
2010-11
期刊：
影响因子：
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通讯作者：
E. Dreassi;Assunta Zanfini;A. Zizzari;C. Rosa;M. Botta;G. Corbini
中科院分区：
文献类型：
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作者：
E. Dreassi;Assunta Zanfini;A. Zizzari;C. Rosa;M. Botta;G. Corbini
建立了柑橘采后果汁中杀菌剂残留量的液相色谱-电喷雾串联质谱（LC-ESI-MS/MS）定量检测方法。采用梯度洗脱-正离子模式电喷雾串联质谱法对土壤中噻菌灵（TBZ）、多菌灵（MBC）、甲基托布津（TPM）、抑霉唑（IMZ）和咪鲜胺（PCZ）的残留进行了分析。从柑橘汁中提取杀菌剂，回收率为79.8%~ 101.2%，相对标准偏差小于15%。MBC的定量限范围为0.01 μg/kg IMZ至0.06 μg/kg。将LC-MS-MS方法应用于市售柑橘类果汁中，检测出90%的样品中MBC、TBZ和IMZ残留。咪鲜胺残留量仅在一个多果汁（橙子，柠檬和胡萝卜）样品中检测到。
An LC-ESI-MS/MS method was developed for the quantitative detection of postharvest fungicide residues in citrus juices and reported in this paper. The analyses of thiabendazole (TBZ), carbendazim (MBC), thiophanate methyl (TPM), imazalil (IMZ) and prochloraz (PCZ) residues were performed by using a gradient elution in conjunction with positive ionization mode electrospray ionization tandem mass spectrometry. Fungicides were extracted from citrus juices with recoveries ranging from 79.8 to 101.2% and relative standard deviation better than 15%. The quantification limits ranged from 0.01 μg/kg IMZ to 0.06 μg/kg for MBC. The LC-MS-MS method was applied to commercial citrus juices, detecting MBC, TBZ and IMZ residues in the 90% of the samples. Prochloraz residues were detected only in one of the multifruit juice (orange, lemon and carrot) samples.