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You searched for: Journal Analytica chimica acta Remove constraint Journal: Analytica chimica acta Publication Year 2012 Remove constraint Publication Year: 2012 Subject gas chromatography-mass spectrometry Remove constraint Subject: gas chromatography-mass spectrometry Subject derivatization Remove constraint Subject: derivatization Text Availability Citation in PubAg Remove constraint Text Availability: Citation in PubAg
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1. Determination of hydroxylated metabolites of polycyclic aromatic hydrocarbons in sediment samples by combining subcritical water extraction and dispersive liquid–liquid microextraction with derivatization

Author:
Wang, Xiaowei; Lin, Li; Luan, Tiangang; Yang, Lihua; Tam, Nora F.Y.
Source:
Analytica chimica acta 2012 v.753 pp. 57-63
ISSN:
0003-2670
Subject:
sediments; derivatization; detection limit; sediment contamination; phenanthrenes; liquid-phase microextraction; solvents; temperature; solid phase extraction; metabolites; gas chromatography-mass spectrometry
Abstract:
... 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). ...
DOI:
10.1016/j.aca.2012.09.028

2. In situ solid-phase microextraction and post on-fiber derivatization combined with gas chromatography–mass spectrometry for determination of phenol in occupational air

Author:
Es-haghi, Ali; Baghernejad, Masoud; Bagheri, Habib
Source:
Analytica chimica acta 2012 v.742 pp. 17-21
ISSN:
0003-2670
Subject:
air; coatings; correlation; derivatization; desorption; detection limit; gas chromatography-mass spectrometry; monitoring; phenol; polyethylene glycol; rapid methods; solid phase microextraction; temperature
Abstract:
... A method based on solid-phase microextraction (SPME) followed by on-fiber derivatization and gas chromatography–mass spectrometry detection (GC–MS) for determination of phenol in air was developed. Three different types of SPME fibers, polar and non-polar poly(dimethylsiloxane) (PDMS) and polyethylene glycol (PEG) were synthesized using sol–gel technology and their feasibility to the sampling of p ...
DOI:
10.1016/j.aca.2012.01.002

3. Simultaneous determination of ultraviolet filters in aqueous samples by plunger-in-needle solid-phase microextraction with graphene-based sol–gel coating as sorbent coupled with gas chromatography–mass spectrometry

Author:
Zhang, Hong; Lee, Hian Kee
Source:
Analytica chimica acta 2012 v.742 pp. 67-73
ISSN:
0003-2670
Subject:
benzophenones; derivatization; detection limit; coatings; UV filters; mixing; camphor; river water; pH; salt concentration; solid phase microextraction; graphene; temperature; filters; gas chromatography-mass spectrometry
Abstract:
... A simple, sensitive and selective method for the simultaneous determination of five ultraviolet (UV) filters: benzophenone, octyl salicylate, homosalate, 3-(4-methylbenzylidene) camphor, 2-hydroxy-4-methoxybenzophenone in aqueous samples was developed. The analytes were extracted by plunger-in-needle solid-phase microextraction with graphene as sorbent, then silylated on-fiber with N-methyl-N-(tri ...
DOI:
10.1016/j.aca.2012.03.016

4. Sensitive and robotic determination of bromate in sea water and drinking deep-sea water by headspace solid-phase micro extraction and gas chromatography–mass spectrometry

Author:
Lim, Hyun-Hee; Shin, Ho-Sang
Source:
Analytica chimica acta 2012 v.741 pp. 32-37
ISSN:
0003-2670
Subject:
ammonium compounds; barium; calcium; chlorides; derivatization; drinking water; gas chromatography-mass spectrometry; headspace analysis; heat; hydrochloric acid; ions; iron; magnesium; manganese; nitrates; potassium; seawater; sodium; solid phase microextraction; sulfates; temperature
Abstract:
... A robotic method has been established for the determination of bromate in sea water and drinking deep-sea water. Bromate in water was converted into volatile derivative, which was measured with headspace solid-phase micro extraction and gas chromatography–mass spectrometry (HS-SPME GC–MS). Derivatization reagent and the HS-SPME parameters (selection of fibre, extraction/derivatization temperature, ...
DOI:
10.1016/j.aca.2012.06.046

5. Determination of polycyclic aromatic hydrocarbons and their oxy-, nitro-, and hydroxy-oxidation products

Author:
Cochran, R.E.; Dongari, N.; Jeong, H.; Beránek, J.; Haddadi, S.; Shipp, J.; Kubátová, A.
Source:
Analytica chimica acta 2012 v.740 pp. 93-103
ISSN:
0003-2670
Subject:
air; derivatization; gas chromatography-mass spectrometry; ionization; methane; monitoring; oxidation; particulates; polycyclic aromatic hydrocarbons; smoke; solid phase extraction; temperature
Abstract:
... A sensitive method has been developed for the trace analysis of PAHs and their oxidation products (i.e., nitro-, oxy-, and hydroxy-PAHs) in air particulate matter (PM). Following PM extraction, PAHs, nitro-, oxy-, and hydroxy-PAHs were fractionated using solid phase extraction (SPE) based on their polarities. Gas chromatography–mass spectrometry (GC–MS) conditions were optimized, addressing inject ...
DOI:
10.1016/j.aca.2012.05.050