Journal Article

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Analytica Chimica Acta

Anal.Chim.Acta

13-Nov

753

57

63

LR: 20131121; CI: Copyright (c) 2012; JID: 0370534; 0 (Acetamides); 0 (Acetonitriles); 0 (Fluoroacetates); 0 (Organosilicon Compounds); 0 (Polycyclic Hydrocarbons, Aromatic); 0 (Water Pollutants, Chemical); 059QF0KO0R (Water); 77377-52-7 (N-methyl-N-(tert

Netherlands

1873-4324; 0003-2670

PMID: 23107137

eng

Journal Article; Research Support, Non-U.S. Gov't; IM

10.1016/j.aca.2012.09.028 [doi]

Unknown(0)

23107137

A sample preparation method for the determination of hydroxylated polycyclic aromatic hydrocarbons (OH-PAHs) in sediment samples was developed using gas chromatography-mass spectrometry (GC-MS). Dispersive liquid-liquid microextraction (DLLME) with derivatization was performed following the subcritical water extraction (SWE) that provided which was provided by accelerated solvent extraction (ASE). Several important parameters that affected both SWE extraction and DLLME, such as the selection of organic modifier, its volume, extraction temperature, extraction pressure and extraction time were also investigated. High sensitivity of the hydroxylated PAHs derivatives by N-(tert-butyldimethylsilyl)-N-methyl-trifluoroacetamide (MTBSTFA) could be achieved with the limits of detection (LODs) ranging from 0.0139 (2-OH-nap) to 0.2334 mug kg(-1) (3-OH-fluo) and the relative standard deviations (RSDs) between 2.81% (2-OH-phe) and 11.07% (1-OH-pyr). Moreover, the proposed method was compared with SWE coupled with solid phase extraction (SPE), and the results showed that ASE-DLLME was more promising with recoveries ranging from 57.63% to 91.07%. The proposed method was then applied to determine the hydroxylated metabolites of phenanthrene in contaminated sediments produced during the degradation by two PAH-degraders isolated from mangrove sediments.

Elsevier B.V

Wang,X., Lin,L., Luan,T., Yang,L., Tam,N.F.

MOE Key Laboratory of Aquatic Product Safety, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, People's Republic of China.

20121001

http://vp9py7xf3h.search.serialssolutions.com/?charset=utf-8&pmid=23107137

2012