Novel cyromazine imprinted polymer applied to the solid-phase extraction of melamine from feed and milk samples

He, Lili; Su, Yijuan; Zheng, Yaqiu; Huang, Xianhui; Wu, Li; Liu, Yahong; Zeng, Zhenling; Zhang-liu, Chen

doi:10.1016/j.chroma.2009.06.081

Cited by 64 publications

(52 citation statements)

References 18 publications

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“…8 The advantages of MIP are had high selectivity for capturing the target analytes, very stable in organic solvents, pH, and extremes temperature. 9 The advantages of MIP is considered ideal as material in the manufacture of electrochemical sensors. Therefore in this research conducted a synthesis of MIP glucose from methacrylic acid as monomer, ethylene glycol dimethacrylate as cross-linker and glucose as a template.…”

Section: Analysis Of Glucose By Potentiometrymentioning

confidence: 99%

Analysis of Glucose by Potentiometry Using Electrode Carbon Paste/Molecularly Imprinted Polymer (Mip) With Metacrylic Acid as Monomer

2017

Rasayan J Chem

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The electrode carbon paste molecularly imprinted polymer (MIP) has been developed to analyze glucose by potentiometry. The MIP was made by mixing glucose as a template, methacrylic acid as monomer and ethylene glycol dimethacrylate as a crosslinker with the mole ratio of 1: 4: 12. The electrode made by mixing activated carbon, MIP, and paraffin with the ratio 50: 35: 15 (%, w/w) was observed to perform optimally. The results obtained show that analysis of glucose gives optimum results at pH 5 (without the pH adjustment). The analysis of glucose using electrodes carbon paste/MIP gives Nernst factor is 28.80 mV/decade, the measurement range is 10 -2 -10 -5 M and the limit of detection is 5.87.10 -5 M. In this study can be known that urea did not interfere the analysis of glucose using this method. The accuracy of this electrode is 70.7 -129% and the coefficient of variation is 0.06 -0.18% for the concentration range 10 -5 -10 -2 M. This electrode showed response time less than 2 minutes and could be used for 145 times.

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Section: Analysis Of Glucose By Potentiometrymentioning

confidence: 99%

Analysis of Glucose by Potentiometry Using Electrode Carbon Paste/Molecularly Imprinted Polymer (Mip) With Metacrylic Acid as Monomer

2017

Rasayan J Chem

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“…MIPs have also been reported in the analysis of melamine in milk samples, mainly by the MISPE methodology [19][20][21][22]. Table 1 resumes the polymerization conditions considered in the synthesis of melamine selective polymers.…”

Section: Introductionmentioning

confidence: 99%

“…Table 1 resumes the polymerization conditions considered in the synthesis of melamine selective polymers. Bulk polymerisation [21][22][23] stands out as the most common procedure, however this methodology leads to irregular particles in size and shape as a consequence of the mechanical procedures applied to the resulting polymer [10]. In order to overcome these drawbacks some authors followed the suspension protocol which allows the synthesis of homogeneous beads with controlled size [19,20].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of a Molecularly Imprinted Polymer for Melamine Analysis in Milk by HPLC with Diode Array Detection

2015

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Abbreviations:AIBN -azobisisobutyronitrile; CL -cross-linker; EDMA -ethylene glycol dimethacrylate; Kd -dissociation constant; MAA -methacrylic acid; MIDE -molecularly imprinted dispersive extraction; MIP -molecularly imprinted polymer; NIP -nonimprinted polymer; PVA -polyvinyl alcohol; Qmax -maximum binding concentration; Rrecovery; T -template. Keywords:Molecularly imprinted polymer (MIP), matrix effect, molecularly imprinted dispersive extraction coupled with high-performance liquid chromatography. 2 AbstractA molecularly imprinted polymer for melamine was prepared by suspension polymerization, using melamine as template, methacrylic acid as functional monomer and ethylene glycol dimethacrylate as cross-linker.The optimal template/monomer and monomer/cross-linker ratios were obtained, being defined as 1/15 and 1/12, respectively. The template removal was performed by Soxhlet extraction with methanol containing 10% of acetic acid, in two cycles of 24 h each. Under optimal conditions the imprinted polymer was used as a dispersive extraction sorbent to extract melamine from different milk samples, before HPLC-DAD analysis.The validated method presented a limit of detection of 0.6 mg/kg. From the analysis of six different milks, melamine was detected in two of the considered samples in a maximum concentration of 9.3 ± 0.3 mg/kg.3

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“…The most frequently used methods for the determination of melamine are gas chromatography-mass chromatography (GC-MS) and liquid chromatography-tandem mass chromatography (LC-MS-MS) [5], which always involves in traditional sample pretreatment procedures, such as solid phase extraction and solid phase micro-extraction (SPME). The main problem associated with traditional sorbents of solid phase extraction (SPE) is the low selectivity or low adsorption capacity [6].…”

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of Molecularly Imprinted Polymer as SPE Sorbent for Melamine Isolation

et al. 2013

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Abstract:In this paper, a separation procedure combining molecularly imprinted-solid phase extraction (MI-SPE) was developed for the isolation of melamine. The molecularly imprinted polymer (MIP) was prepared using precipitation polymerization method where melamine as template, 9-vinylcarbazole as functional monomer, ethtylene glycol dimethacrylate as a cross-linker and benzoyl peroxide as initiator. An off-line MI-SPE method followed by ultra-performance liquid chromatography detection of melamine was established. MIP showed a better affinity toward melamine compared to non imprinted polymer (NIP) with a maximum binding capacity of 53.01 mg/g MIP. Based on the correlation coefficients, the kinetic study indicated that the adsorption of melamine by MIP fit a pseudo-second order model. From isotherm study, adsorption of melamine by MIP increased when the concentration of melamine increased and followed a Freundlich isotherm model, which indicates the sorption can be described by multilayer sorption. The interference study proved that MIP has better binding capacity towards melamine if compared to NIP due to specific sites of melamine occurred in MIP particles.

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Novel cyromazine imprinted polymer applied to the solid-phase extraction of melamine from feed and milk samples

Cited by 64 publications

References 18 publications

Analysis of Glucose by Potentiometry Using Electrode Carbon Paste/Molecularly Imprinted Polymer (Mip) With Metacrylic Acid as Monomer

Analysis of Glucose by Potentiometry Using Electrode Carbon Paste/Molecularly Imprinted Polymer (Mip) With Metacrylic Acid as Monomer

Synthesis of a Molecularly Imprinted Polymer for Melamine Analysis in Milk by HPLC with Diode Array Detection

Preparation and Characterization of Molecularly Imprinted Polymer as SPE Sorbent for Melamine Isolation

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