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Multiwalled carbon nanotubes coated fibers for solid-phase microextraction of polybrominated diphenyl ethers in water and milk samples before gas chromatography with electron-capture detection.
J Chromatogr A. 2006 Dec 22; 1137(1):8-14.JC

Abstract

Determination of polybrominated diphenyl ethers (PBDEs) in environmental samples has raised great concerns due to the widespread use of PBDEs and their potential risk to humans. Solid-phase microextraction (SPME) is a fast, simple, cost-effective, and green sample preparation technique and is widely used for environmental analysis, but reports on the application of SPME for determination of PBDEs are very limited, and only a few publications dealing with commercial SPME fibers are available for extraction of PBDEs. Herein, we report a novel SPME method using multiwalled carbon nanotubes (MWCNTs) as the SPME fiber coating for gas chromatography with electron-capture detection (GC-ECD) of PBDEs in environmental samples. The MWCNTs coating gave much higher enhancement factors (616-1756) than poly (5% dibenzene-95% dimethylsiloxane) coating (139-384) and activated carbon coating (193-423). Thirty-minute extraction of 10 mL of sample solution using the MWCNTs coated fiber for GC-ECD determination yielded the limits of detection of 3.6-8.6 ng L(-1) and exhibited good linearity of the calibration functions (r(2)>0.995). The precision (RSD%, n=4) for peak area and retention time at the 500 ng L(-1) level was 6.9-8.8% and 0.6-0.9%, respectively. The developed method was successfully applied for the analysis of real samples including local river water, wastewater, and milk samples. The recovery of the PBDEs at 500 ng L(-1) spiked in these samples ranged from 90 to 119%. No PBDEs were detected in the river water and skimmed milk samples, whereas in the wastewater sample, 134-215 ng L(-1) of PBDEs were found. The PBDEs were detected in all whole fat milk samples, ranging from 13 to 484 ng L(-1). In a semiskimmed milk sample, only BDE-47 was found at 21 ng L(-1).

Authors+Show Affiliations

Key Laboratory of Functional Polymer Materials, Ministry of Education, Research Center for Analytical Sciences, College of Chemistry, Nankai University, Tianjin 300071, China.No affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

17055524

Citation

Wang, Jun-Xia, et al. "Multiwalled Carbon Nanotubes Coated Fibers for Solid-phase Microextraction of Polybrominated Diphenyl Ethers in Water and Milk Samples Before Gas Chromatography With Electron-capture Detection." Journal of Chromatography. A, vol. 1137, no. 1, 2006, pp. 8-14.
Wang JX, Jiang DQ, Gu ZY, et al. Multiwalled carbon nanotubes coated fibers for solid-phase microextraction of polybrominated diphenyl ethers in water and milk samples before gas chromatography with electron-capture detection. J Chromatogr A. 2006;1137(1):8-14.
Wang, J. X., Jiang, D. Q., Gu, Z. Y., & Yan, X. P. (2006). Multiwalled carbon nanotubes coated fibers for solid-phase microextraction of polybrominated diphenyl ethers in water and milk samples before gas chromatography with electron-capture detection. Journal of Chromatography. A, 1137(1), 8-14.
Wang JX, et al. Multiwalled Carbon Nanotubes Coated Fibers for Solid-phase Microextraction of Polybrominated Diphenyl Ethers in Water and Milk Samples Before Gas Chromatography With Electron-capture Detection. J Chromatogr A. 2006 Dec 22;1137(1):8-14. PubMed PMID: 17055524.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Multiwalled carbon nanotubes coated fibers for solid-phase microextraction of polybrominated diphenyl ethers in water and milk samples before gas chromatography with electron-capture detection. AU - Wang,Jun-Xia, AU - Jiang,Dong-Qing, AU - Gu,Zhi-Yuan, AU - Yan,Xiu-Ping, Y1 - 2006/10/20/ PY - 2006/09/13/received PY - 2006/10/02/revised PY - 2006/10/02/accepted PY - 2006/10/24/pubmed PY - 2007/1/16/medline PY - 2006/10/24/entrez SP - 8 EP - 14 JF - Journal of chromatography. A JO - J Chromatogr A VL - 1137 IS - 1 N2 - Determination of polybrominated diphenyl ethers (PBDEs) in environmental samples has raised great concerns due to the widespread use of PBDEs and their potential risk to humans. Solid-phase microextraction (SPME) is a fast, simple, cost-effective, and green sample preparation technique and is widely used for environmental analysis, but reports on the application of SPME for determination of PBDEs are very limited, and only a few publications dealing with commercial SPME fibers are available for extraction of PBDEs. Herein, we report a novel SPME method using multiwalled carbon nanotubes (MWCNTs) as the SPME fiber coating for gas chromatography with electron-capture detection (GC-ECD) of PBDEs in environmental samples. The MWCNTs coating gave much higher enhancement factors (616-1756) than poly (5% dibenzene-95% dimethylsiloxane) coating (139-384) and activated carbon coating (193-423). Thirty-minute extraction of 10 mL of sample solution using the MWCNTs coated fiber for GC-ECD determination yielded the limits of detection of 3.6-8.6 ng L(-1) and exhibited good linearity of the calibration functions (r(2)>0.995). The precision (RSD%, n=4) for peak area and retention time at the 500 ng L(-1) level was 6.9-8.8% and 0.6-0.9%, respectively. The developed method was successfully applied for the analysis of real samples including local river water, wastewater, and milk samples. The recovery of the PBDEs at 500 ng L(-1) spiked in these samples ranged from 90 to 119%. No PBDEs were detected in the river water and skimmed milk samples, whereas in the wastewater sample, 134-215 ng L(-1) of PBDEs were found. The PBDEs were detected in all whole fat milk samples, ranging from 13 to 484 ng L(-1). In a semiskimmed milk sample, only BDE-47 was found at 21 ng L(-1). SN - 0021-9673 UR - https://www.unboundmedicine.com/medline/citation/17055524/Multiwalled_carbon_nanotubes_coated_fibers_for_solid_phase_microextraction_of_polybrominated_diphenyl_ethers_in_water_and_milk_samples_before_gas_chromatography_with_electron_capture_detection_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0021-9673(06)01898-X DB - PRIME DP - Unbound Medicine ER -