Solid-phase microextraction for determining the binding state of organic pollutants in contaminated water rich in humic organic matter

Pörschmann, J.; Kopinke, Frank‐Dieter; Pawliszyn, Janusz

doi:10.1016/s0021-9673(98)00525-1

Cited by 83 publications

(57 citation statements)

References 23 publications

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“…4.5b) [77], as well as retard SPME kinetics (Fig. 4.5c) [46] in aqueous samples. Kopinke, Pörschmann and Georgi explained these phenomena in their early book chapter by hypothesizing two opposite effects, i.e., the barrier effect and the shuttle effect [78], which indicated that the mass transfer toward the fiber might be hampered by forming a thin film of the binding matrix at the surface of the fiber, or the depletion of the free analyte adjacent to the fiber because extraction could be compensated by the release of the bound analyte from the binding matrix.…”

Section: Spme Kinetics In Aqueous Samples Containing Mobile-binding Mmentioning

confidence: 87%

“…Last, the extracted fiber is quantified, and the concentration of the freely dissolved organic compounds is calibrated. Nd-SPME method has been reported for the determination of the freely dissolved concentration of a variety of organic pollutants in the complex sample [20,23,27,32,33,45,46,48,60,70,71]. However, several issues are raised when applying this extraction strategy for more hydrophobic compounds.…”

Section: Spme Fiber Dosing Methodsmentioning

confidence: 99%

“…On the other hand, when the volume ratio of the fiber coating to the sample is constant, fibers with low K ff value can be chosen as an alternative option when the sensitivity is allowed. For example, PDMS can be used in the nd-SPME to determine the freely dissolved concentration of phenols due to the low K ff value [46]. Equation 4.5 is only applicable to the equilibrium sampling.…”

Section: The Conditions Of Nd-spmementioning

confidence: 99%

See 2 more Smart Citations

Solid Phase Microextraction for Sensing Freely Dissolved Analytes in Complex Water Sample

Jiang¹,

Xu²,

Ouyang³

2016

Solid Phase Microextraction

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Ever since its invention, solid phase microextraction (SPME) has been widely used for aqueous sampling. In recent years, this technique has received increasing attention for the analysis of complex water sample because of its capability of sensing freely dissolved analytes in the complex matrix. In this chapter, the development of negligible depletion SPME (nd-SPME) for the determination of freely dissolved analytes in complex water samples is reviewed. The fundamentals and sampling conditions of nd-SPME are first discussed. Then, the application of nd-SPME for measurement of sorption coefficients in complex matrixes is summarized. In addition, the calibration methods of nd-SPME are discussed in detail, especially the effect of complex matrix on the sampling kinetic. For the first time, the advances of complex matrix effects including retarded and enhanced effects on the SPME sampling kinetic are fully explored.

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Section: Spme Kinetics In Aqueous Samples Containing Mobile-binding Mmentioning

confidence: 87%

Section: Spme Fiber Dosing Methodsmentioning

confidence: 99%

Section: The Conditions Of Nd-spmementioning

confidence: 99%

See 1 more Smart Citation

Solid Phase Microextraction for Sensing Freely Dissolved Analytes in Complex Water Sample

Jiang¹,

Xu²,

Ouyang³

2016

Solid Phase Microextraction

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“…The SPME technique can be used to determine the partitioning of HOCs in a three-phase water system consisting of a solution, dissolved organic matter, and particulate organic matter and allows for the estimation of specific partition coefficients such as K OC and K DOC [16,21,22]. Taking this advantage, SPME may help to determine more accurate BCFs of organic chemicals because only the freely dissolved fraction partitions to the SPME fiber [23].…”

Section: Spme: Potential and Limitationsmentioning

confidence: 99%

Solid-phase microextraction for bioconcentration studies according to OECD TG 305

2012

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An important aim of the European Community Regulation on chemicals and their safe use is the identification of (very) persistent, (very) bioaccumulative, and toxic substances. In other regulatory chemical safety assessments (pharmaceuticals, biocides, pesticides), the identification of such (very) persistent, (very) bioaccumulative, and toxic substances is of increasing importance. Solid-phase microextraction is especially capable of extracting total water concentrations as well as the freely dissolved fraction of analytes in the water phase, which is available for bioconcentration in fish. However, although already well established in environmental analyses to determine and quantify analytes mainly in aqueous matrices, solid-phase microextraction is still a rather unusual method in regulatory ecotoxicological research. Here, the potential benefits and drawbacks of solid-phase microextraction are discussed as an analytical routine approach for aquatic bioconcentration studies according to OECD TG 305, with a special focus on the testing of hydrophobic organic compounds characterized by log K OW > 5.

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“…proteins), investigations of complex system composition in response to internal/external stimuli, and monitoring of chemical transformations (e.g. pharmacokinetics studies) [25][26][27][28][29][30] . As discussed above, despite the undisputable advantages presented in terms of extraction efficiency, solid porous coatings show certain drawbacks associated with deterioration of the coating surface due to direct exposure to complex matrices for extended periods of time.…”

Section: Introductionmentioning

confidence: 99%

Headspace versus Direct Immersion Solid Phase Microextraction in Complex Matrixes: Investigation of Analyte Behavior in Multicomponent Mixtures

2015

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This work aims to investigate the behavior of analytes in complex mixtures and matrixes with the use of solid-phase microextraction (SPME). Various factors that influence analyte uptake such as coating chemistry, extraction mode, the physicochemical properties of analytes, and matrix complexity were considered. At first, an aqueous system containing analytes bearing different hydrophobicities, molecular weights, and chemical functionalities was investigated by using commercially available liquid and solid porous coatings. The differences in the mass transfer mechanisms resulted in a more pronounced occurrence of coating saturation in headspace mode. Contrariwise, direct immersion extraction minimizes the occurrence of artifacts related to coating saturation and provides enhanced extraction of polar compounds. In addition, matrix-compatible PDMS-modified solid coatings, characterized by a new morphology that avoids coating fouling, were compared to their nonmodified analogues. The obtained results indicate that PDMS-modified coatings reduce artifacts associated with coating saturation, even in headspace mode. This factor, coupled to their matrix compatibility, make the use of direct SPME very practical as a quantification approach and the best choice for metabolomics studies where wide coverage is intended. To further understand the influence on analyte uptake on a system where additional interactions occur due to matrix components, ex vivo and in vivo sampling conditions were simulated using a starch matrix model, with the aim of mimicking plant-derived materials. Our results corroborate the fact that matrix handling can affect analyte/matrix equilibria, with consequent release of high concentrations of previously bound hydrophobic compounds, potentially leading to coating saturation. Direct immersion SPME limited the occurrence of the artifacts, which confirms the suitability of SPME for in vivo applications. These findings shed light into the implementation of in vivo SPME strategies in quantitative metabolomics studies of complex plant-based systems.

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Solid-phase microextraction for determining the binding state of organic pollutants in contaminated water rich in humic organic matter

Cited by 83 publications

References 23 publications

Solid Phase Microextraction for Sensing Freely Dissolved Analytes in Complex Water Sample

Solid Phase Microextraction for Sensing Freely Dissolved Analytes in Complex Water Sample

Solid-phase microextraction for bioconcentration studies according to OECD TG 305

Headspace versus Direct Immersion Solid Phase Microextraction in Complex Matrixes: Investigation of Analyte Behavior in Multicomponent Mixtures

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