Simultaneous determination of 16 polycyclic aromatic hydrocarbons in reclaimed water using solid‐phase extraction followed by ultra‐performance convergence chromatography with photodiode array detection

Abstract

A new fast and effective analysis method has been developed to simultaneously determine 16 polycyclic aromatic hydrocarbons in reclaimed water samples by ultra-performance convergence chromatography with photodiode array detection and solid-phase extraction. The parameters of ultra-performance convergence chromatography on the separation behaviors and the crucial condition of solid-phase extraction were investigated systematically. Under optimal conditions, the 16 polycyclic aromatic hydrocarbons could be separated within 4 min. The limits of detection and quantification were in the range of 0.4-4 and 1-10 μg/L in water, respectively. This approach has been applied to a real industrial wastewater treatment plant successfully. The results showed that polycyclic aromatic hydrocarbons were dramatically decreased after chemical treatment procedure, and the oxidation procedure was effective to remove trace polycyclic aromatic hydrocarbons.

Ultra‐high performance supercritical fluid chromatography combined with quadrupole time‐of‐flight mass spectrometry for the characterization of pentaerythritol fatty acid esters

“…The retention behavior in UHPSFC is mainly influenced by the density of the mobile phase, where increase in density leads to a decline in retention and decrease in density leads to an increase in retention . The column temperature and back pressure play an important role in the density and viscosity of the mobile phase; the density and viscosity of the supercritical fluid decrease with an increase in column temperature . In this study, an increase in temperature led to a decline in the density of the CO 2 and thus an increase in retention behavior.…”

“…14 The column temperature and back pressure play an important role in the density and viscosity of the mobile phase; 17 the density and viscosity of the supercritical fluid decrease with an increase in column temperature. 14,18 In this study, an increase in temperature led to a decline in the density of the CO 2 and thus an increase in retention behavior. The influence of temperature on the retention factors in the Figure S3 (supporting information).…”

Fate and Occurrence of Pharmaceutically Active Organic Compounds during Typical Pharmaceutical Wastewater Treatment

“…e elution extract was concentrated to 1 mL under nitrogen at 30°C. Homogenization of the final extract was achieved with ultrasonic and vortex agitation [19].…”

“…Furthermore, the ABR reactor used in the original process is not deep enough and the in uent water is not well-mixed; therefore, the rst grid of the ABR reactor is subjected to a local load greater than the average load, which decreases the treatment e ciency. When Zhao [19] used an "ABR-UASB-biological contact oxidation" process to treat wastewater, the results demonstrated that the removal rates of COD, suspended solid (SS), and NH 3 -N could reach 95.2%, 90.0%, and 71.4%, respectively. In the chemical synthesis pharmaceutical wastewater treatment process, the removal of organic pollutants is generally good, although the concentrations of COD and total nitrogen (TN) in e uent do not reach the standard.…”

Rapid determination of trace polycyclic aromatic hydrocarbons in particulate matter using accelerated solvent extraction followed by ultra high performance liquid chromatography with fluorescence detection

“…PAHs have been determined using GC, GC–MS, HPLC, and UHPLC . Compared with GC and GC−MS, HPLC, or UHPLC is more suitable for the separation of PAHs of high boiling points with isomers included, and has therefore been developed by coupling it to the detectors such as the fluorescence detector (FLD), the diode array detector (DAD), and the UV detector (UVD).…”