Application of carbon nanotubes as solid-phase extraction sorbent for analysis of chlorophenols in water samples
Marek Gołębiowski , Piotr Stepnowski , Danuta Leszczyńska
AbstractThe aim of this work was to investigate the efficiency of various MWCNTs as SPE materials for the preconcentration of chlorophenols. The COOH-functionalized MWCNTs and MWCNTs were used as SPE sorbents. To evaluate the capability of MWCNTs for the preconcentration of chlorophenols from water samples, 2,4-chlorophenol, 4-chlorophenol, 2,4,6-chlorophenol, 2,6-chlorophenol, 3,4-chlorophenol, and 2-chlorophenol were used as model compounds. Chlorophenols were extracted with acetone, methanol, ethanol, and dichloromethane, and determined by gas chromatography–mass spectrometry. COOH-functionalized MWCNTs <8 nm were found to be the best sorbent for the tested chlorophenols. For COOH-functionalized MWCNTs <8 nm, the recovery rates for all chlorophenols were higher than 50% when acetone or ethanol was used as eluents. In the case of dichloromethane elution, recovery rates for chlorophenols were from 62.0% for 2,6-DCP to 116.8% for 2,4-DCP; only for 2,4,6-TCP was the recovery rate 30.6%. Similar percentage recoveries were achieved with methanol as the eluent.
|Journal series||Chemical Papers, ISSN 0366-6352, (A 20 pkt)|
|Publication size in sheets||0.5|
|Keywords in English||chlorophenols, MWCNTs, solid-phase extraction (SPE), GC/MS|
|Score|| = 20.0, 11-12-2018, ArticleFromJournal|
= 20.0, 11-12-2018, ArticleFromJournal
|Publication indicators||= 3; = 2; : 2016 = 1.258 (2) - 2016=1.194 (5)|
|Citation count*||4 (2018-12-13)|
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.