Determination of linear alkylbenzensulfonates in aqueous matrices by ion-pair solid-phase microextraction–in-port derivatization–gas chromatography–mass spectrometry

Alzaga, Roberto; Peña, Araceli; Ortiz, Laura; Bayona, Josep M.

doi:10.1016/s0021-9673(03)00493-x

Cited by 50 publications

(30 citation statements)

References 27 publications

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“…Detection limits in SIM-mode did not exceed 0.16-0.8 ng mL -1 . 106 On-column derivatization of phenols with 3,5-bis(trifluoromethyl)benzyldimethylphenylammonium fluoride has been reported. 107 Being highly volatile, PFB derivatives are widely used for the determination of various compounds by positive-ion GC/MS.…”

Section: Some Common Analytical Applications Of Alkylationmentioning

confidence: 99%

Derivatization in Mass Spectrometry– 3. Alkylation (Arylation)

Halket

Заикин

2004

Eur J Mass Spectrom (Chichester)

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The review is devoted to alkylation (arylation) as a widely employed derivatization procedure for the protection of OH (carboxylic acids, phosphoric acids, sulfonic acids, alcohols, polyols, phenols, enols), SH (thiols) and NH (amines, amides) groups in order to increase volatility, to improve the chromatographic properties and, if possible, mass spectral properties of derivatives. Chemical aspects of derivatization and various alkylation (arylation) reagents and reaction procedures are described. Specific mass spectral (electron ionization, chemical ionization) features of derivatives helpful in identification, structure elucidation, profiling and quantitative determination of the above-mentioned polar compounds by coupled gas chromatography or high-performance liquid chromatography are discussed. Some common analytical applications of the procedures in organic chemistry, clinical chemistry, environmental chemistry etc. are briefly summarized.

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Section: Some Common Analytical Applications Of Alkylationmentioning

confidence: 99%

Derivatization in Mass Spectrometry– 3. Alkylation (Arylation)

Halket

Заикин

2004

Eur J Mass Spectrom (Chichester)

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“…Particularly, GC combined with mass spectrometric (MS) detection provides low detection limits at the ppt level and allows us to identify homologues and isomers of LAS in real samples such as sediments, river water, and seawater. [4][5][6] However, some derivatization steps to convert LAS into a volatile compound 7,8 are unavoidable for GC procedures, because LASs are not volatile enough to permit direct measurement by GC. LC has widely been applied to the determination of LAS in various environmental samples without any derivatization using ultraviolet (UV), 9-11 fluorescence (FL), [12][13][14][15][16] and MS [17][18][19] detection.…”

Section: Introductionmentioning

confidence: 99%

Characterization and Determination of Linear Alkylbenzenesulfonates in Environmental Water Samples by High-Performance Liquid Chromatography with a Hydrophilic Polymer Column and Electrospray Ionization Mass Spectrometric Detection

2004

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A liquid chromatography-mass spectrometry (LC/MS) method was developed for the separation and determination of linear alkylbenzenesulfonates (C10 -C14 LAS) in environmental water samples using a hydrophilic polymer column . This method involves a solid-phase extraction of the LAS samples with a Sep-Pak PS-2 cartridge. The LAS components were separated on the column with a mobile phase of 29% (w/v) acetonitrile-water containing 0.8 mM di-n-butylammonium acetate and 0.2 M acetic acid, and were detected by mass spectrometry with electrospray ionization. Detection limits of the developed method based on selected ion monitoring (SIM) technique for the C10 -C14 LAS standards were 13 -47 ng L -1 . The concentrations of the C10 -C14 LAS in the environmental water samples ranged between 5 -317 µg L -1 for a river water sample and 0.4 -6.4 µg L -1 for a seawater sample. Linear relationships between the logarithms of retention factors and the alkyl chain lengths for each phenyl positional isomer of LAS could successfully be used for the identification of the isomer peaks.

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“…Afterwards, strong non-polar solvents (e.g., hexane) and methanol are used to remove fats in a first clean-up stage and to extract surfactants after another elution, respectively. There are other simple and low cost extraction techniques which reduce the time needed for sample preparation, and decrease or eliminate solvent consumption [100][101][102][103][104][105][106][107][108][109][110][111]. As example, dispersive liquid-liquid microextraction (DLLME) is a novel method based on the migration of analytes to a cloudy solution, caused by the dispersion of the extraction solvent (low soluble in water, e.g., chloroform) as very fine droplets due to the appropriate mixture with a dispersant (soluble in water, e.g., acetone) in the aqueous sample.…”

Section: Purification and Preconcentrationmentioning

confidence: 99%

“…The amount of polymer changes from 0.5 µL in SPME fibers up to 300 µL in SBSE bars, therefore improving the sensitivity of target compounds. Different types of fibers have been tested during application of SPME for isolation of anionic (polydimethylsiloxane (PDMS) [105], polyacrylate (PA) [106]) and non-ionic surfactants (carbowax/template resin (CWAX/TR) [107], PDMS/divinylbenzene (DVB), PA [108]). So far, the use of SBSE is limited to the extraction of NP and octylphenol (OP) from liquid samples [109].…”

Section: Purification and Preconcentrationmentioning

confidence: 99%

“…Nowadays, single quadrupole (MS) or tandem mass spectrometers (MS-MS) are commonly preferred because they allow unequivocal identification of analytes by measuring their parent masses and displaying specific fragmentation patterns after their ionization and rupture, respectively. Hence, there are several papers dealing with the analysis of anionic and non-ionic surfactants using GC coupled to MS [69,105,108] or MS-MS [125]. Target compounds can be detected by electron impact (EI) or chemical ionization (CI), being more widely used the first mode, although higher sensitivity may be reached using CI for analysis of some anionic compounds.…”

Section: Gas Chromatographymentioning

confidence: 99%

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