title: Water-based gas purge microsyringe extraction coupled with liquid chromatography for determination of alkylphenols from sea food Laminaria japonica Aresh.
abstract: A novel organic solvent-free mode of gas purge microsyringe extraction, termed water-based gas purge microsyringe extraction, was developed. This technique can directly extract target compounds in wet samples without any drying process. Parameters affecting the extraction efficiency were investigated. Under optimal extraction conditions, the recoveries of alkylphenols were between 87.6 and 105.8%, and reproducibility was between 5.2 and 12.1%. The technique was also used to determine six kinds of alkylphenols (APs) from samples of Laminaria japonica Aresh. The OP and NP were detected in all the samples, and concentrations ranged from 26.0 to 54.5ngg(-1) and 45.0-180.4ngg(-1), respectively. The 4-n-butylphenol was detected in only one sample and its concentration was very low. Other APs were not detected in L. japonica Aresh samples. The experimental results demonstrated that the technique is fast, simple, non-polluting, allows for quantitative extraction, and a drying process was not required for wet samples. Since only aqueous solution and a conventional microsyringe were used, this technique proved affordable, efficient, and convenient for the extraction of volatile and semivolatile ionizable compounds.
authors.affiliation: Key Laboratory of Nature Resource of the Changbai Mountain and Functional Molecular, Yanbian University, Ministry of Education, Park Road 977, Yanji City, Jilin Province 133002, China.
authors.forename: Cui
authors.initials: C
authors.lastname: Yang
authors.forename: Jinhua
authors.initials: J
authors.lastname: Zhao
authors.forename: Juan
authors.initials: J
authors.lastname: Wang
authors.forename: Hongling
authors.initials: H
authors.lastname: Yu
authors.forename: Xiangfan
authors.initials: X
authors.lastname: Piao
authors.forename: Donghao
authors.initials: D
authors.lastname: Li
mesh_terms: D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D006878:Hydroxides; D007795:Laminaria / Q000737:chemistry*; D057230:Limit of Detection; D016014:Linear Models; D059627:Liquid Phase Microextraction / Q000295:instrumentation / Q000379:methods*; D010636:Phenols / Q000032:analysis* / Q000737:chemistry / Q000302:isolation & purification; D017680:Potassium Compounds; D015203:Reproducibility of Results; D013594:Syringes; D014867:Water / Q000737:chemistry
chemical_list: D006878:Hydroxides; D010636:Phenols; D017680:Potassium Compounds; D014867:Water; C029943:potassium hydroxide
keywords: Alkylphenols; Extraction; GP-MSE; Liquid chromatography; Liquid phase microextraction