کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7596766 | 1492127 | 2014 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Selective and simultaneous determination of trace bisphenol A and tebuconazole in vegetable and juice samples by membrane-based molecularly imprinted solid-phase extraction and HPLC
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کلمات کلیدی
RSDLOQElectrospun nanofibrous membraneBmaxIPBMolecularly imprinted solid-phase extraction - استخراج مولکولی از جامد فازrelative standard deviation - انحراف استاندارد نسبیBisphenol A - بیسفنول ای، بیسفنول ATebuconazole - توبوکونازولLOD یا Limit of detection - حد تشخیصDissociation constant - حد تفکیکmaximum number of binding sites - حداکثر تعداد سایت های پیوندcoefficient of determination - ضریب تعیینlimit of quantification - محدودیت اندازه گیریlimit of detection - محدودیت تشخیصSEM - مدل معادلات ساختاری / میکروسکوپ الکترونی روبشیMISPE - مصفهMolecularly imprinted polymers - مولکولی پلیمرهای چاپ شدهscanning electron microscope - میکروسکوپ الکترونی اسکنlog P - ورودی P
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Nanofibrous molecularly imprinted membranes (nano-MIMs) with multi-analyte selectivity were prepared by encapsulating two types of molecularly imprinted polymer nanoparticles (MIP-NPs) into electrospun polyvinyl alcohol nanofibers. The obtained nano-MIMs maintained high molecular selectivity offered by each of the MIP-NPs. Nano-MIM embedding BPA-imprinted nanoparticles and TBZ-imprinted nanoparticles together showed the highest binding selectivity for acid bisphenol A (BPA) and basic tebuconazole (TBZ). This nano-MIM was used as affinity material of membrane-based molecularly imprinted solid-phase extraction (m-MISPE) to extract trace BPA and TBZ in vegetables and juices simultaneously. The recoveries of BPA and TBZ from different samples were higher than 70.33% with RSDs lower than 9.57%. m-MISPE gave better HPLC separation efficiencies and higher recoveries than conventional SPE based on C18/SCX. Multi-analyte selective m-MISPE combined with HPLC realized selective and simultaneous determination of several trace analytes with opposite charges/polarities in different food samples.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Food Chemistry - Volume 164, 1 December 2014, Pages 527-535
Journal: Food Chemistry - Volume 164, 1 December 2014, Pages 527-535
نویسندگان
Ya-ting Wu, Yan-hong Zhang, Meng Zhang, Fei Liu, Ying-chun Wan, Zheng Huang, Lei Ye, Qi Zhou, Yun Shi, Bin Lu,