Determination of 16 polycyclic aromatic hydrocarbons in seawater using molecularly imprinted solid-phase extraction coupled with gas chromatography-mass spectrometry

Song, Xingfu; Li, Jinhua; Xu, Shoufang; Ying, Rongjian; Ma, Jiping; Liao, Chunyang; Liu, Dongyan; Yu, Junbao

doi:10.1016/j.talanta.2012.04.065

Cited by 148 publications

(73 citation statements)

References 40 publications

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“…Meanwhile, as we all know, molecular imprinting is a commonly used technology to build a molecular recognition mechanism in triaxial cross-linked polymers named molecularly imprinted polymers (MIPs). 17,18 More recently, MIPs have been identified as ideal materials and are widely used in contaminant removal and trace analysis, since they are suitable for applications where analyte selectivity is essential. 17−22 Ion imprinted polymers (IIPs), an important branch of MIPs, are similar to MIPs, but they recognize inorganic ions after imprinting, especially metal ions.…”

Section: −11mentioning

confidence: 99%

Novel Pb²⁺ Ion Imprinted Polymers Based on Ionic Interaction via Synergy of Dual Functional Monomers for Selective Solid-Phase Extraction of Pb²⁺ in Water Samples

Cai

Zhong

et al. 2013

ACS Appl. Mater. Interfaces

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215

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A novel kind of Pb 2+ ion imprinted polymers (IIPs) was prepared based on ionic interactions via the synergy of dual functional monomers of methacrylic acid and vinyl pyridine for selective solid-phase extraction (SPE) , and Mn 2+ with selective coefficients above 30, as well as high anti-interference ability for Pb 2+ confronting with common coexisting various ions. Through 10 adsorption−desorption cycles, the reusable IIPs exhibited a good recoverability with the standard error within 5%. These features suggested the IIPs were ideal candidates for extraction and removal of Pb 2+ ions. Consequently, the IIPs were utilized as SPE sorbents and related parameters were optimized. An excellent linearity was presented in the range of 0.2−50 μg L −1 (R 2 = 0.9998), as well as the limits of detection and quantification were achieved of 0.06 and 0.19 μg L −1 , respectively. A good repeatability was obtained with the relative standard deviation of 2.8%. Furthermore, real water samples were successfully analyzed and satisfactory recoveries varying from 95.5 to 104.6% were attained. The IIPs-SPE demonstrated potential application perspectives for rapid and high-effective cleanup and enrichment of trace Pb 2+ ions in complicated matrices.

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Section: −11mentioning

confidence: 99%

Novel Pb²⁺ Ion Imprinted Polymers Based on Ionic Interaction via Synergy of Dual Functional Monomers for Selective Solid-Phase Extraction of Pb²⁺ in Water Samples

Cai

Zhong

et al. 2013

ACS Appl. Mater. Interfaces

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215

101

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“…In most of the molecular imprinting, a single template molecule is used to create the specific binding site of the MIPs; however, the imprinting process does not have to be limited to a single template, and several templates can be imprinted simultaneously [15]. Multi-template imprinting, using dual/multiple targets/species as templates, can provide multiple types of recognition sites in one MIPs format, which can widen the application of MIPs for more than one analyte [11,15,16]. And several different classes of templates can be recognized, extracted, separated, detected, or otherwise analyzed at one time [15], which will be highly desirable for simultaneously monitoring a group of possible contaminants in environmental systems.…”

Section: Introductionmentioning

confidence: 99%

Multi-template imprinted polymers for simultaneous selective solid-phase extraction of six phenolic compounds in water samples followed by determination using capillary electrophoresis

Lü

Wang

et al. 2017

Journal of Chromatography A

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a b s t r a c tNovel multi-template molecularly imprinted polymers (mt-MIPs) with six phenolic compounds as the template, namely phenol, 4-chlorophenol (4-CP), 2,4,6-trichlorophenol (2,4,6-TCP), 2,4-dichlorophenol (2,4-DCP), 2-chlorophenol (2-CP) and 2,6-dichlorophenol (2,6-DCP), were prepared by precipitation polymerization and used as the adsorbents of solid-phase extraction (SPE), and coupled with capillary electrophoresis (CE) for the simultaneous selective extraction, separation and determination of trace phenolic compounds in water samples. The resultant mt-MIPs exhibited uniform spherical morphology, large specific surface area and high thermal stability, and offered high selectivity towards the six template phenolic compounds. Various parameters affecting the molecularly imprinted SPE (MISPE) efficiency were investigated in detail, and excellent CE separation was realized within 7 min. Good linearity was obtained in the range of 1-200 g L −1 for phenol and 4-CP, and 1-300 g L −1 for 2,4,6-TCP, 2,4-DCP, 2-CP and 2,6-DCP. High sensitivity was attained with low limits of detection and quantification ranging from 0.17 to 0.31 g L −1 and 0.57 to 1.03 g L −1 , respectively. Satisfactory recoveries for spiked reservoir water, river water, tannery wastewater and tap water samples were achieved in the range of 82.13-105.63% with relative standard deviations within 1.68-6.96%. The developed MISPE-CE method proved practically feasible for simultaneous selective extraction/enrichment, separation and sensitive determination of multiple targets in complicated aqueous matrices.

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“…6−9 After the removal of the template, recognition sites complementary in size, shape, and functionality to the template are formed in the 3D polymer network. 6,10,11 Recently, MIPs have aroused extensive attention and been widely applied in many fields, such as extraction/separation 12−15 and chemo/biosensing, 16−18 owing to their desired selectivity, physical robustness, thermal stability, low cost, and easy preparation. Up until now, a number of MIPs-capped QD sensors that combine the selectivity of MIPs with the sensitivity of QDs have been developed to detect various compounds such as pentachlorophenol, 19 4-nitrophenol, 20 pyrethroids, 21 proteins, 22,23 and domoic acid.…”

Section: ■ Introductionmentioning

confidence: 99%

Dummy Molecularly Imprinted Polymers-Capped CdTe Quantum Dots for the Fluorescent Sensing of 2,4,6-Trinitrotoluene

et al. 2013

ACS Appl. Mater. Interfaces

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Molecularly imprinted polymers (MIPs) with trinitrophenol (TNP) as a dummy template molecule capped with CdTe quantum dots (QDs) were prepared using 3-aminopropyltriethoxy silane (APTES) as the functional monomer and tetraethoxysilane (TEOS) as the cross linker through a seedgrowth method via a sol−gel process (i.e., DMIP@QDs) for the sensing of 2,4,6-trinitrotoluene (TNT) on the basis of electrontransfer-induced fluorescence quenching. With the presence and increase of TNT in sample solutions, a Meisenheimer complex was formed between TNT and the primary amino groups on the surface of the QDs. The energy of the QDs was transferred to the complex, resulting in the quenching of the QDs and thus decreasing the fluorescence intensity, which allowed the TNT to be sensed optically. DMIP@QDs generated a significantly reduced fluorescent intensity within less than 10 min upon binding TNT. The fluorescence-quenching fractions of the sensor presented a satisfactory linearity with TNT concentrations in the range of 0.8−30 μM, and its limit of detection could reach 0.28 μM. The sensor exhibited distinguished selectivity and a high binding affinity to TNT over its possibly competing molecules of 2,4-dinitrophenol (DNP), 4-nitrophenol (4-NP), phenol, and dinitrotoluene (DNT) because there are more nitro groups in TNT and therefore a stronger electron-withdrawing ability and because it has a high similarity in shape and volume to TNP. The sensor was successfully applied to determine the amount of TNT in soil samples, and the average recoveries of TNT at three spiking levels ranged from 90.3 to 97.8% with relative standard deviations below 5.12%. The results provided an effective way to develop sensors for the rapid recognition and determination of hazardous materials from complex matrices.

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Determination of 16 polycyclic aromatic hydrocarbons in seawater using molecularly imprinted solid-phase extraction coupled with gas chromatography-mass spectrometry

Cited by 148 publications

References 40 publications

Novel Pb²⁺ Ion Imprinted Polymers Based on Ionic Interaction via Synergy of Dual Functional Monomers for Selective Solid-Phase Extraction of Pb²⁺ in Water Samples

Novel Pb²⁺ Ion Imprinted Polymers Based on Ionic Interaction via Synergy of Dual Functional Monomers for Selective Solid-Phase Extraction of Pb²⁺ in Water Samples

Multi-template imprinted polymers for simultaneous selective solid-phase extraction of six phenolic compounds in water samples followed by determination using capillary electrophoresis

Dummy Molecularly Imprinted Polymers-Capped CdTe Quantum Dots for the Fluorescent Sensing of 2,4,6-Trinitrotoluene

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Determination of 16 polycyclic aromatic hydrocarbons in seawater using molecularly imprinted solid-phase extraction coupled with gas chromatography-mass spectrometry

Cited by 148 publications

References 40 publications

Novel Pb2+ Ion Imprinted Polymers Based on Ionic Interaction via Synergy of Dual Functional Monomers for Selective Solid-Phase Extraction of Pb2+ in Water Samples

Novel Pb2+ Ion Imprinted Polymers Based on Ionic Interaction via Synergy of Dual Functional Monomers for Selective Solid-Phase Extraction of Pb2+ in Water Samples

Multi-template imprinted polymers for simultaneous selective solid-phase extraction of six phenolic compounds in water samples followed by determination using capillary electrophoresis

Dummy Molecularly Imprinted Polymers-Capped CdTe Quantum Dots for the Fluorescent Sensing of 2,4,6-Trinitrotoluene

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Novel Pb²⁺ Ion Imprinted Polymers Based on Ionic Interaction via Synergy of Dual Functional Monomers for Selective Solid-Phase Extraction of Pb²⁺ in Water Samples

Novel Pb²⁺ Ion Imprinted Polymers Based on Ionic Interaction via Synergy of Dual Functional Monomers for Selective Solid-Phase Extraction of Pb²⁺ in Water Samples