Online in situ analysis of selected semi-volatile organic compounds in water by automated microscale solid-phase extraction with large-volume injection/gas chromatography/mass spectrometry

Li, Yongtao; George, John E.; McCarty, Christina L.

doi:10.1016/j.chroma.2007.10.054

Cited by 13 publications

(13 citation statements)

References 19 publications

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“…The eluate was collected in 300 μL glass inserts. A previous report described the detailed functions and procedures of the automated online SPE system [25]. Figure 1 shows the new setup of the automated online SPE/PTV-LVI/GC/MS system used in this study.…”

Section: Automated Spementioning

confidence: 99%

“…Researchers have developed several LVI techniques for GC, which include on-column injection [15], loop-type injection [14,16], and programmed-temperature vaporization injection (PTV) [17][18][19][20]. The reported automated online SPE/GC and GC/MS included mobile rack systems based on x-y-z robotic techniques using switching valves and disposable small SPE cartridges [21,22], liquid chromatography-like systems using high pressure liquid pumps and switching valves as well as reusable SPE pre-columns or cartridges [23,24], and mobile rack systems based on x-y-z robotic techniques using syringes and disposable 96-well extraction plates [25]. Automated SPE were online coupled with on-column injectors [23,24], loop-type injectors [22], and PTV injectors [21,25].…”

Section: Introductionmentioning

confidence: 99%

“…The reported automated online SPE/GC and GC/MS included mobile rack systems based on x-y-z robotic techniques using switching valves and disposable small SPE cartridges [21,22], liquid chromatography-like systems using high pressure liquid pumps and switching valves as well as reusable SPE pre-columns or cartridges [23,24], and mobile rack systems based on x-y-z robotic techniques using syringes and disposable 96-well extraction plates [25]. Automated SPE were online coupled with on-column injectors [23,24], loop-type injectors [22], and PTV injectors [21,25]. A fully automated SPE/PTV-LVI/GC/ MS method was recently used for the online in situ analysis of SOCs in water [25].…”

Section: Introductionmentioning

confidence: 99%

“…Automated SPE were online coupled with on-column injectors [23,24], loop-type injectors [22], and PTV injectors [21,25]. A fully automated SPE/PTV-LVI/GC/ MS method was recently used for the online in situ analysis of SOCs in water [25]. One of the advantages of using disposable small SPE cartridges or 96-well extraction plates is that it can minimize or eliminate carryover contamination.…”

Section: Introductionmentioning

confidence: 99%

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Determination of selected semi-volatile organic compounds in water using automated online solid-phase extraction with large-volume injection/gas chromatography/mass spectrometry

McCarty

George

2011

Front. Environ. Sci. Eng. China

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A rapid, sensitive, and cost-effective analytical method was developed for the analysis of selected semivolatile organic compounds in water. The method used an automated online solid-phase extraction technique coupled with programmed-temperature vaporization large-volume injection gas chromatography/mass spectrometry. The water samples were extracted by using a fully automated mobile rack system based on x-y-z robotic techniques using syringes and disposable 96-well extraction plates. The method was validated for the analysis of 30 semivolatile analytes in drinking water, groundwater, and surface water. For a sample volume of 10 mL, the linear calibrations ranged from 0.01 or 0.05 to 2.5 μg$L -1 , and the method detection limits were less than 0.1 μg$L -1 . For the reagent water samples fortified at 1.0 μg$L -1 and 2.0 μg$L -1 , the obtained mean absolute recoveries were 70%-130% with relative standard deviations of less than 20% for most analytes. For the drinking water, groundwater, and surface water samples fortified at 1.0 μg$L -1 , the obtained mean absolute recoveries were 50%-130% with relative standard deviations of less than 20% for most analytes. The new method demonstrated three advantages: 1) no manipulation except the fortification of surrogate standards prior to extraction; 2) significant cost reduction associated with sample collection, shipping, storage, and preparation; and 3) reduced exposure to hazardous solvents and other chemicals. As a result, this new automated method can be used as an effective approach for screening and/or compliance monitoring of selected semi-volatile organic compounds in water.

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Section: Automated Spementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Determination of selected semi-volatile organic compounds in water using automated online solid-phase extraction with large-volume injection/gas chromatography/mass spectrometry

McCarty

George

2011

Front. Environ. Sci. Eng. China

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“…Gas chromatography is the most widely used separation technique, and it is usually coupled with powerful detection systems like mass spectrometry [5][6][7][8], electron impact-mass spectrometry (EI-MS) and inductively coupled plasma mass spectrometry (ICP-MS) [9], or nitrogen phosphorus detection (NPD) [8,10,11] among others. This technique can achieve detection limits below the legislated value [2,3] for most of the pesticides tested when it is combined with preconcentration and sample clean-up techniques, such as solid phase microextraction (SPME) [5][6][7]9], multiwalled carbon nanotubes [10] or stir-bar sorptive extraction [12]. Besides gas chromatography, liquid chromatography has allowed the screening of 300 pesticides [13] using a MS/MS detection that achieves very low detection limits, near 0.1 µg/L, in the absence of sample preconcentration steps.…”

Section: Introductionmentioning

confidence: 99%

Sensitive determination of Fenamiphos in water samples by flow injection photoinduced chemiluminescence

Benito

Lloret

Torres-Cartas

2012

International Journal of Environmental Analytical Chemistry

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In this work, a sensitive flow injection chemiluminescence (FI-CL) method for the determination of nematicide Fenamiphos in a rapid and simple way is proposed.Fenamiphos is firstly photodegraded in basic medium. These photofragments react with Ce(IV) providing the chemiluminescence signal. To the authors' knowledge, no chemiluminescence method has been described in the literature for the determination of the nematicide Fenamiphos. All physical and chemical parameters in the flow injection chemiluminescence system were optimized in order to obtain the best sensitivity, selectivity and sample throughput. Before the injection of the sample in the FI-CL system, a preconcentration step with solid phase extraction C18 cartridges was performed. By applying SPE to 250 mL of standard (final volume 10 mL), the linear dynamic range was between 3.4 and 60 µg L -1 , and the detection limit was 1 µg L -1 .When SPE was applied to 500 mL of standard (final volume 10 mL), the detection limit was 0.5 µg L -1 . These detection limits are below the emission limit value established by the Spanish Regulations of the Hydraulic Public Domain for pesticides (50 µg L -1 ) and of the same order as the limit established for total pesticides (0.5 µg L -1 ) at EuropeanDirective on the quality of water for human consumption. The sample throughput was 126 hour -1 . Intraday and interday coefficients of variation were below 10% in all cases.No interference was registered in presence of usual concentrations of anions, cations and other organophosphorus pesticides. The method was successfully applied to the analysis of environmental water samples, obtaining recoveries between 96 and 107.5%.

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Current literature in mass spectrometry

2008

J. Mass Spectrom.

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In order to keep subscribers up‐to‐date with the latest developments in their field, John Wiley & Sons are providing a current awareness service in each issue of the journal. The bibliography contains newly published material in the field of mass spectrometry. Each bibliography is divided into 11 sections: 1 Reviews; 2 Instrumental Techniques & Methods; 3 Gas Phase Ion Chemistry; 4 Biology/Biochemistry: Amino Acids, Peptides & Proteins; Carbohydrates; Lipids; Nucleic Acids; 5 Pharmacology/Toxicology; 6 Natural Products; 7 Analysis of Organic Compounds; 8 Analysis of Inorganics/Organometallics; 9 Surface Analysis; 10 Environmental Analysis; 11 Elemental Analysis. Within each section, articles are listed in alphabetical order with respect to author (4 Weeks journals ‐ Search completed at 27th. Feb. 2008)

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Online in situ analysis of selected semi-volatile organic compounds in water by automated microscale solid-phase extraction with large-volume injection/gas chromatography/mass spectrometry

Cited by 13 publications

References 19 publications

Determination of selected semi-volatile organic compounds in water using automated online solid-phase extraction with large-volume injection/gas chromatography/mass spectrometry

Determination of selected semi-volatile organic compounds in water using automated online solid-phase extraction with large-volume injection/gas chromatography/mass spectrometry

Sensitive determination of Fenamiphos in water samples by flow injection photoinduced chemiluminescence

Current literature in mass spectrometry

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