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Table 4 Analytical results for the determination of phenols in seawater samples from the South China Sea and Wastewater

From: 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

SamplesPhenol4-NP2-NP2,4-DMP2,4-DCP
Yangpu
 Concentration (ng/mL)ndcndndndnd
 Recoverya93.185.692.689.391.2
RSD (%, n = 3)4.25.06.85.14.9
 Baishamen
 Concentration (ng/mL)ndndndndnd
 Recoveryb95.189.694.288.695.4
RSD (%, n = 3)6.45.96.87.18.2
Holiday beach
 Concentration (ng/mL)ndndndndnd
 Recoveryb81.685.487.381.980.3
 RSD (%, n = 3)5.96.87.16.98.3
Wastewater
 Concentration (ng/mL)3.64 ± 0.17ndndndnd
 Recoveryb85.384.185.690.582.6
 RSD (%, n = 3)5.96.87.16.98.3
  1. aSpiked with phenols at 10.0 ng/mL
  2. bSpiked with phenols at 100.0 ng/mL
  3. cnd = not detected. Three parallel experiments were conducted for each sample