Development of new SPME fibers by sol–gel technology for SPME-HPLC determination of organometals

Gbatu, Thompson P.; Sutton, Karen L.; Caruso, Joseph A.

doi:10.1016/s0003-2670(99)00532-2

Cited by 122 publications

(61 citation statements)

References 26 publications

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“…Other methods for the analysis of mercury in the presence of other metals such as lead, arsenic, and tin have also been reported [21,24,26,29,32,37,41].…”

Section: Organomercury Compoundsmentioning

confidence: 99%

“…To overcome this problem, Chong et al developed sol-gel coatings [31]. Gbatu et al [32] used fibers prepared by sol-gel technology which are stable even in strong organic solvents (xylene and methylene chloride) as well as in acidic and basic solution. The preparation of sol-gel fibers involves four steps: (i) pretreatment of the fused-silica fiber to remove the polyimide coating.…”

Section: Spme Fibermentioning

confidence: 99%

“…The dynamic mode of desorption is sufficient if the analyte is not strongly adsorbed onto the fiber. In this case, the analyte can be removed by a stream of mobile phase [32]. However, if the analytes are more strongly adsorbed onto the fiber, it is dipped into the mobile phase or another strong solvent for a specified time.…”

Section: Desorption In Hplcmentioning

confidence: 99%

“…Gbatu et al [32] widened the application of SPME by describing a method for the preparation of fibers which are highly stable in strong organic solvents (xylene and methylene chloride) as well as in acidic and basic solutions (pH 0.3 and 13). These fibers were used to extract organoarsenic, organomercury, and organotin compounds from aqueous solutions prior to separation using HPLC with UV absorbance detection.…”

Section: Organoarsenic Compoundsmentioning

confidence: 99%

“…The fiber was immersed for 30 min in the sample solution with constant stirring to assure proper extraction of the analytes. It is reported that organotins can also be analyzed in the presence of other metals [15,21,24,26,29,32,35,37,38,49].…”

Section: Organotin Compoundsmentioning

confidence: 99%

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Applications of solid phase microextraction for the determination of metallic and organometallic species

Kaur

Malik²,

Verma

2006

J. Sep. Sci.

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Applications of solid phase microextraction for the determination of metallic and organometallic speciesThis paper reviews recent developments of solid phase microextraction (SPME) and its application to the analysis of organometallic species of lead, arsenic, mercury, tin, and selenium by hyphenation with HPLC-GC-atomic spectrometry. In the first part, a background of the technique is given in terms of derivatization, fibers used, extraction and desorption conditions. The second part summarizes typical SPME applications to the determination of organometallic species and the main experimental conditions with the aid of specific examples. Most of the applications comprise alkylation with NaBEt 4 and headspace extraction followed by gas chromatographic separation with a suitable detector.

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“…Other methods for the analysis of mercury in the presence of other metals such as lead, arsenic, and tin have also been reported [21,24,26,29,32,37,41].…”

Section: Organomercury Compoundsmentioning

confidence: 99%

Section: Spme Fibermentioning

confidence: 99%

Section: Desorption In Hplcmentioning

confidence: 99%

Section: Organoarsenic Compoundsmentioning

confidence: 99%

Section: Organotin Compoundsmentioning

confidence: 99%

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Applications of solid phase microextraction for the determination of metallic and organometallic species

Kaur

Malik²,

Verma

2006

J. Sep. Sci.

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Sol‐Gel Coatings and Monoliths in Analytical Sample Preparation

Segro

Malik

2010

Handbook of Sample Preparation

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Advances in sol‐gel based columns for capillary electrochromatography: Sol‐gel open‐tubular columns

Malik

2002

Electrophoresis

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The development of sol-gel open-tubular column technology in capillary electrochromatography (CEC) is reviewed. Sol-gel column technology offers a versatile means of creating organic-inorganic hybrid stationary phases. Sol-gel column technology provides a general approach to column fabrication for microseparation techniques including CEC, and is amenable to both open-tubular and monolithic columns. Direct chemical bonding of the stationary phase to the capillary inner walls provides enhanced thermal and solvent stability to sol-gel columns. Sol-gel stationary phases inherently possess higher surface area, and thus provide an effective one-step alternative to conventional open-tubular column technology. Sol-gel column technology is applicable to both silica-based and transition metal oxide-based hybrid stationary phases, and thus, provides a great opportunity to utilize advanced material properties of a wide range of nontraditional stationary phases to achieve enhanced selectivity in analytical microseparations. A wide variety of stationary phase ligands can be chemically immobilized on the capillary inner surface using a single-step sol-gel procedure. Sol-gel chemistry can be applied to design stationary phases with desired chromatographic characteristics, including the possibility of creating columns with either a positive or a negative charge on the stationary phase surface. This provides a new tool to control electroosmotic flow (EOF) in the column. Column efficiencies on the order of half a million theoretical plates per meter have been reported for sol-gel open-tubular CEC columns. The selectivity of sol-gel stationary phases can be easily fine-tuned by adjusting the composition of the coating sol solution. Open-tubular columns have significant advantages over their packed counterparts because of the simplicity in column making and hassle-free fritless operation. Open-tubular CEC columns possess low sample capacity and low detection sensitivity. Full utilization of the analytical potential of sol-gel open-tubular columns will require a concomitant development in the area of high-sensitivity detection technology.

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Development of new SPME fibers by sol–gel technology for SPME-HPLC determination of organometals

Cited by 122 publications

References 26 publications

Applications of solid phase microextraction for the determination of metallic and organometallic species

Applications of solid phase microextraction for the determination of metallic and organometallic species

Sol‐Gel Coatings and Monoliths in Analytical Sample Preparation

Advances in sol‐gel based columns for capillary electrochromatography: Sol‐gel open‐tubular columns

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