Abstract
Composite nanoparticles were used in solid phase micro membrane tip extraction and capillary electrophoresis to determine phenol and
-amino-phenol in wastewater. The optimized conditions were 100 g/L concentration, 40 min contact time, 11 pH, 5 mg/mL nanoparticles amounts, 60 min desorption time, 9 desorption pH and 298 K temperature. Capillary electrophoresis conditions were phosphate buffer (15 mM, pH 7.0) background electrolyte, 18 kV applied voltage, 214 nm UV detection, 30 s sample loading at 23 ± 1 °C. The maximum percent uptakes of
-amino-phenol and phenol were 80.0 and 85.0%. High ratio recoveries of
-amino-phenol and phenol from nanomaterial were 99.0 and 98. Consequently, the actual extractions of
-amino-phenol and phenol from wastewater were 79.2 and 83.30 percent. The migration times of phenol and
-amino-phenol and were 9.0 and 12.0 min. The detection limits of phenol and
-amino-phenols were 0.1 and 0.2 µg/L after extraction and CE. Therefore, this combination of solid phase micro membrane tip extraction and capillary electrophoresis may be considered as the ideal one for monitoring of toxic phenol and
-amino-phenol in water sample.