Determination of Cephalosporins by UHPLC-DAD Using Molecularly Imprinted Polymers

被引:20
|
作者
Baeza-Fonte, Alen N. [1 ]
Garces-Lobo, Idenia [2 ]
Luaces-Alberto, Markel D. [2 ]
Goncalves, Luis Moreira [3 ,4 ]
Sotomayor, Maria D. P. T. [5 ]
Valdes-Gonzalez, Aristides C. [1 ]
机构
[1] Univ Havana, Inst Sci & Technol Mat, Universitary Lab Characterizat Struct Subst, Calle Zapata & G S-N, Havana 10400, Cuba
[2] Univ Havana, Fac Chem, Dept Analyt Chem, Calle Zapata & G S-N, Havana 10400, Cuba
[3] Univ Porto FCUP, Fac Ciencias, Dept Quim & Bioquim, REQUIMTE LAQV, Rua Campo Alegre S-N, P-4169007 Oporto, Portugal
[4] Univ Sao Paulo, Inst Quim, Dept Quim Fundamental, Ave Prof Lineu Prestes 748, BR-05508000 Sao Paulo, SP, Brazil
[5] UNESP Univ Estadual Paulista, Inst Quim, Dept Quim Analit, Ave Prof Francisco Degni 55, BR-14800900 Araraquara, SP, Brazil
基金
巴西圣保罗研究基金会;
关键词
SOLID-PHASE EXTRACTION; TANDEM MASS-SPECTROMETRY; WASTE-WATER; CAPILLARY-ELECTROPHORESIS; PHENOLIC-COMPOUNDS; ANTIBIOTICS; SAMPLES; MILK; CEPHALEXIN; RECOGNITION;
D O I
10.1093/chromsci/bmx099
中图分类号
Q5 [生物化学];
学科分类号
071010 ; 081704 ;
摘要
Molecularly imprinted polymers (MIPs) were synthesized for the determination of cephalosporins (cephazolin, ceftazidime, cefotaxime, ceftriaxone, cefepime and cephalexin) by ultra-high performance liquid chromatography with diode-array detection (UHPLC-DAD). After optimization, MIPs were synthesized using cephazolin as the template, methacrylic acid as the functional monomer, triethylenglycol dimethacrylate as the crosslinker, acetonitrile/dimethylsulfoxide as porogens and benzoyl peroxide as the radical initiator. Not only this is a novel route of MIP synthesis for cephalosporins, but also this choice of analytes is unique. Chromatographic separation was performed in a C-8 column using a binary gradient with trifluoroacetic acid 0.1% in water and acetonitrile. Linearity was assessed up to 100 mu g mL(-1) and linear correlation coefficients (r) were all higher than 0.99, limits of detection were within the range of 3-12 ng mL(-1), and recoveries from 86 to 102% were obtained for concentrations between 0.05 and 1.0 mu g mL(-1).
引用
收藏
页码:187 / 193
页数:7
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