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Abstract
Composite nanoparticles were used in solid phase micro membrane tip extraction and capillary electrophoresis to determine phenol and p-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 p-amino-phenol and phenol were 80.0 and 85.0%. High ratio recoveries of p-amino-phenol and phenol from nanomaterial were 99.0 and 98. Consequently, the actual extractions of p-amino-phenol and phenol from wastewater were 79.2 and 83.30 percent. The migration times of phenol and p-amino-phenol and were 9.0 and 12.0 min. The detection limits of phenol and p-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 p-amino-phenol in water sample.
Highlights
The analysis of any sample of natural origin comprises two parts, that is, sample preparation and separation and identification
Many sample preparation methods are reported in the literature and these comprise liquid-liquid extraction, solid phase extraction, solid phase micro-extraction (SPME), supercritical fluid extraction, ultrasonic extraction, pressurized liquid extraction, empty fiber liquid phase micro-extraction, micro-wave assisted extraction, dispersive liquid-liquid micro-extraction, molecularly imprinted solid phase extraction, pressurized hot water extraction and solid phase micro membrane tip extraction (SPMMTE)
15.0 milli mole of separable and combination of phenols were arranged in solutions (10.0–100.0 μg/L) of separable and combination of phenols were arranged in 15.0 milli mole phosphate buffer buffer
Summary
The analysis of any sample of natural origin comprises two parts, that is, sample preparation and separation and identification. The later method is supposed as the best one due to the involvement of low amount of adsorption media, due to the involvement of low amount of adsorption media, fast extraction, capable to work at fast extraction, capable to work at low concentration and low sample volume. This method is used low concentration and low sample volume. Phenols are very notorious water pollutants and need to be monitored even at low concentration for pollutants and need to be monitored even at low concentration for which SPMMTE may be a choice which SPMMTE may be a choice of the sample preparation.
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