Sorption behavior of acidic herbicides on carbon nanotubes Original Paper First Online: 02 April 2007 Received: 12 October 2006 Accepted: 18 January 2007 DOI:
Cite this article as: Pyrzynska, K., Stafiej, A. & Biesaga, M. Microchim Acta (2007) 159: 293. doi:10.1007/s00604-007-0739-6 Abstract.
Carbon nanotubes and graphitized carbon are investigated as adsorbents for solid phase extraction of dicamba and 2,4,5-T, two phenoxyalkanoic acid herbicides. These adsorbents have much greater adsorption capability than that of C
18 bonded silica, which was also tested for comparison studies. The adsorption capacity increases remarkably at lower pH of the sample solution. Freundlich isotherms were applied to analyze the data. Our studies suggest that carbon nanotubes have great potential applications in environmental analysis. Keywords: Carbon nanotubes; graphitic carbon; adsorption; herbicides; water samples References Eltekova, N A, Berek, D, Novák, I, Belliardo, F 2000 Adsorption of organic compounds on porous carbon sorbents Carbon 38 373 CrossRef Google Scholar Forgács, E 2002 Retention characteristics and practical applications of carbon sorbents J Chromatogr A 975 229 Google Scholar Kingston, C T, Simard, B 2003 Fabrication of carbon nanotubes Anal Lett 36 3119 CrossRef Google Scholar Trojanowicz, M 2006 Analytical applications of carbon nanotubes: a review Trends Anal Chem 25 48 CrossRef Google Scholar Valcárcel, M, Simonet, B M, Cárdenas, M, Suárez, B 2005 Present and future applications of carbon nanotubes to analytical science Anal Bioanal Chem 382 1783 CrossRef Google Scholar Cai, Y, Jiang, G, Liu, J, Zhou, Q 2003 Multiwalled carbon nanotubes as a solid-phase extraction adsorbent for the determination of bisphenol A, 4-n-nonylphenol, and 4-tert-octylphenol Anal Chem 75 2517 CrossRef Google Scholar Cai, Y Q, Jiang, G B, Liu, J F, Zhou, Q X 2003 Multi-walled carbon nanotubes packed cartridge for the solid-phase extraction of several phtalate esters from water samples and their determination by high performance liquid chromatography Anal Chim Acta 494 149 CrossRef Google Scholar Liu, G, Wang, J, Zhu, Y, Zhang, X 2004 Application of multiwalled carbon nanotubes as a solid-phase extraction sorbent for chlorobenzenes Anal Lett 37 3085 CrossRef Google Scholar Peng, X, Li, Y, Luan, Z, Di, Z, Wang, H, Tian, B, Jia, Z 2003 Adsorption of 1,2-dichlorobenzene from water to carbon nanotubes Chem Phys Lett 376 154 CrossRef Google Scholar Li, Q L, Yuan, D X, Lin, Q M 2004 Evaluation of multi-walled carbon nanotubes as an adsorbent for trapping volatile organic compounds from environmental samples J Chromatogr A 1026 283 CrossRef Google Scholar Li, Y H, Wang, S, Zhang, X, Wei, J, Xu, C, Luan, Z, Wu, D 2003 Adsorption of fluoride by aligned carbon naonotubes Mat Res Bull 38 469 CrossRef Google Scholar Li, Y H, Ding, J, Luan, Z, Di, Z, Zhu, Y, Xu, C, Wu, D, Wei, B 2003 Competitive adsorption of Pb 2+, Cu 2+ and Cd 2+ ions from aqueous solutions by multiwalled carbon nanotubes Carbon 41 2787 CrossRef Google Scholar Li, Y H, Di, Z, Ding, J, Wu, D, Luan, Z, Zhu, Y 2005 Adsorption thermodynamic, kinetics and desorption studies of Pb 2+ on carbon nanotubes Water Res 39 605 CrossRef Google Scholar Sanchis-Mallols, J M, Sagrado, S, Medina-Hernandez, M J, Camanas, R M V, Bonet-Domingo, E 1998 Determination of phenoxy acid herbicides in drinking water by HPLC and solid phase extraction J Liq Chrom Rel Technol 21 1871 CrossRef Google Scholar Luque-Garcia, J L, Luque de Castro, M D 2002 Coupling continuous subcritical water extraction, filtration, preconcentration, chromatographic separation and UV detection for the determination of chlorophenoxy acid herbicides in soils J Chromatogr A 959 25 CrossRef Google Scholar Biesaga, M, Jankowska, A, Pyrzynska, K 2005 Comparison of different sorbents for solid-phase extraction of phenoxyalkanoic acid herbicides Microchim Acta 150 317 CrossRef Google Scholar Biesaga, M, Pyrzynska, K 2006 The evaluation of carbon nanotubes as a sorbent for dicamba herbicide J Sep Sci 29 2241 CrossRef Google Scholar Boehm, H P 2004 Some aspects of the surface chemistry of carbon blacks and other carbons Carbon 40 145 CrossRef Google Scholar Ferro-Garcia, M A, Rivera-Utrilla, J, Bautista-Toledo, I, Moreno-Castilla, M 1998 Adsorption of humic substances on activated carbon from aqueous solutions and their effect on the removal of Cr(III) ions Langmuir 14 1880 CrossRef Google Scholar Rushton, G T, Karns, C L, Shimizu, K D 2005 Critical examination of the use of the Freundlich isotherm in characterizing molecularly imprinted polymers Anal Chim Acta 528 107 CrossRef Google Scholar Tolosa, I, Douy, B, Carvalho, F P 1999 Comparison of the performance of graphitized carbon black and poly(styrene-divylbenzene) cartridges for the determination of pesticides and industrial phosphates in environmental waters J Chromatogr A 864 121 CrossRef Google Scholar