A simple strategy based on fibers coated with surfactant-functionalized multiwalled carbon nanotubes to improve the properties of solid-phase microextraction of phenols in aqueous solution

Table 1 Physico-chemical properties of five phenols and the enrichment factor (EF) obtained with the MWCNTs/NaDC fiber

Compound	Molecular weight	C_A (ng/mL)^a	EF^b
Phenol	94	9.12	91.2 ± 0.5
4-NP	139	8.96	89.6 ± 0.4
2-NP	139	8.53	85.3 ± 0.3
2,4-DMP	122	8.14	81.4 ± 0.2
2,4-DCP	163	9.01	90.1 ± 0.3

Samples of South China seawater (10 mL) were spiked with phenols at 10.0 ng/mL and extracted
^aC_A was calculated as the concentration of the analyte extracted
^bThe enrichment factor (EF) of the analytes was calculated as the ratio of the analyte concentration after extraction to that in the original sample

ISSN: 2661-801X