title: Bamboo charcoal as adsorbent for SPE coupled with monolithic column-HPLC for rapid determination of 16 polycyclic aromatic hydrocarbons in water samples.
abstract: The coupling of solid-phase extraction (SPE) using bamboo charcoal (BC) as an adsorbent with a monolithic column-high performance liquid chromatography (MC-HPLC) method was developed for the high-efficiency enrichment and rapid determination of 16 polycyclic aromatic hydrocarbons (PAHs) in water. Key influence factors, such as the type and the volume of the elution solvent, and the flow rate and the volume of the sample loading, were optimized to obtain a high SPE recovery and extraction efficiency. BC as an SPE adsorbent presented a high extraction efficiency due to its large specific surface area and high adsorption capacity; MC as an HPLC column accelerated the separation within 8 min because of its high porosity, fast mass transfer, and low-pressure resistance. The calibration curves for the PAHs extracted were linear in the range of 0.2-15 µg/L, with the correlation coefficients (r(2)) between 0.9970-0.9999. This method attained good precisions (relative standard deviation, RSD) from 3.5 to 10.9% for the standard PAHs I aqueous solutions at 5 µg/L; the method recoveries ranged in 52.6-121.6% for real spiked river water samples with 0.4 and 4 µg/L. The limits of detection (LODs, S/N = 3) of the method were determined from 11 and 87 ng/L. The developed method was demonstrated to be applicable for the rapid and sensitive determination of 16 PAHs in real environmental water samples.
authors.affiliation: Key Laboratory of Environmental Engineering of Shandong Province, Institute of Environment & Municipal Engineering, Qingdao Technological University, Qingdao 266033, China. majiping2001@yahoo.com.cn
authors.forename: Jiping
authors.initials: J
authors.lastname: Ma
authors.forename: Mo
authors.initials: M
authors.lastname: Li
authors.forename: Jinhua
authors.initials: J
authors.lastname: Li
authors.forename: Cuijie
authors.initials: C
authors.lastname: Rui
authors.forename: Yanping
authors.initials: Y
authors.lastname: Xin
authors.forename: Qinzhao
authors.initials: Q
authors.lastname: Xue
authors.forename: Lingxin
authors.initials: L
authors.lastname: Chen
mesh_terms: D000327:Adsorption; D002138:Calibration; D002606:Charcoal / Q000737:chemistry*; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D057230:Limit of Detection; D011084:Polycyclic Aromatic Hydrocarbons / Q000302:isolation & purification*; D045483:Rivers / Q000737:chemistry*; D031787:Sasa / Q000737:chemistry; D052616:Solid Phase Extraction / Q000379:methods*; D014867:Water / Q000032:analysis; D014874:Water Pollutants, Chemical / Q000302:isolation & purification*
chemical_list: D011084:Polycyclic Aromatic Hydrocarbons; D014874:Water Pollutants, Chemical; D014867:Water; D002606:Charcoal