Supercritical fluid extraction of polyhalogenated pollutants from aquaculture and marine environmental samples: A review

García-Rodríguez, D.; Carro-Díaz, A.M.; Lorenzo-Ferreira, R.A.

doi:10.1002/jssc.200700637

Cited by 33 publications

(15 citation statements)

References 78 publications

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“…Then the supercritical fluid is propelled towards the trap [77]. Several interrelated factors should be adjusted to optimize the extraction from each material, such as the flow of the supercritical fluid, the pressure, the temperature, the extraction modes (which can be combined), the presence of a cosolvent, extraction time, and the system to collect the extracted substances [74,78]. …”

Section: Extraction With Supercritical or Subcritical Fluidsmentioning

confidence: 99%

To Remove or Not to Remove? The Challenge of Extracting the Template to Make the Cavities Available in Molecularly Imprinted Polymers (MIPs)

Lorenzo

Carro

Alvarez‐Lorenzo

et al. 2011

IJMS

172

108

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Template removal is a critical step in the preparation of most molecularly imprinted polymers (MIPs). The polymer network itself and the affinity of the imprinted cavities for the template make its removal hard. If there are remaining template molecules in the MIPs, less cavities will be available for rebinding, which decreases efficiency. Furthermore, if template bleeding occurs during analytical applications, errors will arise. Despite the relevance to the MIPs performance, template removal has received scarce attention and is currently the least cost-effective step of the MIP development. Attempts to reach complete template removal may involve the use of too drastic conditions in conventional extraction techniques, resulting in the damage or the collapse of the imprinted cavities. Advances in the extraction techniques in the last decade may provide optimized tools. The aim of this review is to analyze the available data on the efficiency of diverse extraction techniques for template removal, paying attention not only to the removal yield but also to MIPs performance. Such an analysis is expected to be useful for opening a way to rational approaches for template removal (minimizing the costs of solvents and time) instead of the current trial-and-error methods.

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Section: Extraction With Supercritical or Subcritical Fluidsmentioning

confidence: 99%

To Remove or Not to Remove? The Challenge of Extracting the Template to Make the Cavities Available in Molecularly Imprinted Polymers (MIPs)

Lorenzo

Carro

Alvarez‐Lorenzo

et al. 2011

IJMS

172

108

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“…The applications of SFE span over a great field and has been extensively reviewed over the years [2][3][4], however much attention has been given to extraction from plant matrices [5]. It is worth emphasizing that the scales of SFE range from small scale within e.g.…”

Section: Introductionmentioning

confidence: 99%

Method development in inverse modeling applied to supercritical fluid extraction of lipids

Abrahamsson

Andersson

Nilsson

et al. 2016

The Journal of Supercritical Fluids

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Modeling of the supercritical fluid extraction of solid materials is an important aspect in order to understand and predict the process. A comparison of two empirical models, two semi-empirical models and two mechanistic models is performed using calibration of single experiments. It is concluded that the best fit is obtained using a simple empirical expression. Furthermore, single calibrations did not generate reliable parameters with physical meaning and a methodology is proposed for inverse modeling with complete calibration using several experiments. The experimental dataset contained 29 extractions of lipids from crushed linseeds with varying temperatures, pressures and flow rates.A general rate model and a proposed extension of the hot ball model were evaluated for this purpose. The methodology includes data acquisition, model structure estimation, model calibration and a cross-validation. In general, it was found that the solubility model of Sovová outperformed the other evaluated correlations, and for the general rate model the Toth partition isotherm was also found in the top model structures. However, no generalization could be made regarding the correlations describing the Nernst diffusion layer and diffusivity. AbbreviationsBPR, back-pressure regulator; CV, cross-validation; DLT, diffusion-layer theory; DOE, design of experiments; EHBM, extended hot ball model; ELSD, evaporative light scattering detector; GA, genetic algorithm; GRM, general rate model; HBM, hot ball model; LHS, Latin hypercube sampling; ODE, ordinary differential equation; PSO, particle swarm optimization; RMSE, root mean square error; RMSEC, root mean square error of calibration; RMSECV, root mean square error of cross-validation; scCO2, supercritical carbon dioxide; SFE, supercritical fluid extraction

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“…Extraction with supercritical CO 2 has been used for separating a wide variety of analytes, including pesticides from food, [141] vegetables, [142] aquaculture and marine environmental samples, [143] vitamins from tablet matrices, [144] PCBs from fish muscle, [145] sediments [146,147] and powdered full-fat milk [148] .…”

Section: Supercritical Fluid Extractionmentioning

confidence: 99%

Sample Preparation for Trace Analysis by Chromatographic Methods

Olariu

Vione

Grinberg

et al. 2010

Journal of Liquid Chromatography & Related Technologies

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The determination of trace analytes in complex natural matrices often requires extensive sample extraction and preparation prior to chromatographic analysis. Correct sample preparation can reduce analysis time, sources of error, enhance sensitivity and enable unequivocal identification, confirmation and quantification. This overview considers general aspects on sample preparation techniques for trace analysis in various matrices. The discussed extraction/enrichment techniques cover classical methods, such as Soxhlet and liquid-liquid extractions along with more recently developed techniques like pressurized liquid extraction, liquid phase microextraction (LPME), accelerated microwave extraction, and ultrasoundassisted extraction. This overview also deals with more selective methodologies, such as solid phase extraction (SPE), solid phase microextraction (SPME) and stir bar sorptive extraction (SBSE). The adopted approach considers the equilibriums involved in each technique. The applicability of each technique in environmental, food, biological and pharmaceutical analyses is discussed, particularly for the determination of trace organic compounds by chromatographic methods.

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Supercritical fluid extraction of polyhalogenated pollutants from aquaculture and marine environmental samples: A review

Cited by 33 publications

References 78 publications

To Remove or Not to Remove? The Challenge of Extracting the Template to Make the Cavities Available in Molecularly Imprinted Polymers (MIPs)

To Remove or Not to Remove? The Challenge of Extracting the Template to Make the Cavities Available in Molecularly Imprinted Polymers (MIPs)

Method development in inverse modeling applied to supercritical fluid extraction of lipids

Sample Preparation for Trace Analysis by Chromatographic Methods

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