WTS database

Title Sort descending	Pub Year	Author	SearchLink
Determination of bisphenol-type endocrine disrupting compounds in food-contact recycled-paper materials by focused ultrasonic solid-liquid extraction and ultra performance liquid chromatography-high resolution mass spectrometry	2012	Department of Chemistry, University of La Rioja, C/Madre de Dios 51, E-26006 Logrono (La Rioja), Spain.	Read more...
Source Type Print(0) Ref Type Journal Article Periodical, Full Talanta Periodical, Abbrev. Talanta Pub Date Free Form 15-Sep Volume 99 Issue Start Page 167 Other Pages 174 Notes CI: Copyright (c) 2012; JID: 2984816R; 0 (Benzhydryl Compounds); 0 (Endocrine Disruptors); 2012/01/11 [received]; 2012/05/15 [revised]; 2012/05/18 [accepted]; 2012/05/24 [aheadofprint]; ppublish Place of Publication Netherlands ISSN/ISBN 1873-3573; 0039-9140 Accession Number PMID: 22967537 Language eng SubFile Journal Article; Research Support, Non-U.S. Gov't; IM DOI 10.1016/j.talanta.2012.05.035 [doi] Output Language Unknown(0) PMID 22967537 Abstract Focused ultrasonic solid-liquid extraction (FUSLE) and reverse-phase ultra performance liquid chromatography (UPLC) coupled to a quadrupole-time of flight mass spectrometer (Q-TOF-MS) was applied to the determination of bisphenol-type endocrine disrupting compounds (EDCs) in food-contact recycled-paper materials. Recycled paper is a potential source of EDCs. Bisphenol A (BPA), bisphenol F (BPF) and their derivatives bisphenol A diglycidyl ether (BADGE) and bisphenol F diglycidyl ether (BFDGE) are used for the production of epoxy resins employed in the formulation of printing inks. The FUSLE of bisphenol-type EDCs from packaging is reported for the first time. First, different extraction solvents were studied and methanol was selected. Then, the main FUSLE factors affecting the extraction efficiency (solvent volume, extraction time and ultrasonic irradiation power) were studied by means of a central composite design. The FUSLE conditions selected for further experiments were 20 ml of methanol at ultrasonic amplitude of 100% for 5s. Finally, the number of extraction cycles necessary for complete extraction was established in two. The analysis of the FUSLE extracts was carried out by UPLC-Q-TOF-MS with electrospray ionization and the determination of the four analytes took place in only 4 min. The FUSLE and UPLC-ESI-QTOF-MS method was validated and applied to the analysis of different food-contact recycled-paper-based materials and packaging. The proposed method provided recoveries from 72% to 97%, repeatability and intermediate precision under 9% and 14%, respectively, and detection limits of 0.33, 0.16, 0.65 and 0.40 mug/g for BPA, BPF, BADGE and BFDGE, respectively. The analysis of paper and cardboard samples confirmed the presence of EDCs in these packaging. Descriptors Links Book Title Database Publisher Elsevier B.V Data Source Authors Perez-Palacios,D., Fernandez-Recio,M.A., Moreta,C., Tena,M.T. Original/Translated Title URL Date of Electronic 20120524 PMCID Editors
Determination of brilliant green from fish pond water using carbon nanotube assisted pseudo-stir bar solid/liquid microextraction combined with UV-vis spectroscopy-diode array detection	2011	Department of Chemistry, Payame Noor University, 19395-4697 Tehran, Iran. zarrin_eshaghi@yahoo.com	Read more...
Source Type Print(0) Ref Type Journal Article Periodical, Full Spectrochimica acta.Part A, Molecular and biomolecular spectroscopy Periodical, Abbrev. Spectrochim.Acta A Mol.Biomol.Spectrosc. Pub Date Free Form Aug Volume 79 Issue 3 Start Page 603 Other Pages 607 Notes LR: 20121115; CI: Copyright (c) 2011; JID: 9602533; 0 (Anti-Infective Agents, Local); 0 (Coloring Agents); 0 (Nanotubes, Carbon); 0 (Quaternary Ammonium Compounds); 0 (Water Pollutants, Chemical); G0L543D370 (brilliant green); 2011/02/01 [received]; 2011/ Place of Publication England ISSN/ISBN 1873-3557; 1386-1425 Accession Number PMID: 21531168 Language eng SubFile Evaluation Studies; Journal Article; IM DOI 10.1016/j.saa.2011.03.042 [doi] Output Language Unknown(0) PMID 21531168 Abstract This paper describes the development of a new design of hollow fiber solid/liquid phase microextraction (HF-SLPME) for determination of brilliant green (BG) residues in water fish ponds. This method consists of an aqueous donor phase and carbon nanotube reinforced organic solvent (acceptor phase) operated in direct immersion sampling mode. The multi-walled carbon nanotube dispersed in the organic solvent is held in the pores and lumen of a porous polypropylene hollow fiber. It is in contact directly with the aqueous donor phase. In this method the solid/liquid extractor phase is supported using a polypropylene hollow fiber membrane. Both ends of the hollow fiber segment are sealed with magnetic stoppers. This device is placed inside the donor solution and plays the rule of a pseudo-stir bar. It is disposable, so single use of the fiber reduces the risk of carry-over problems. Brilliant green (BG) after extraction from the aqueous samples with mentioned HF-SLPME device was determined by ultraviolet-visible spectroscopy with diode array detection (UV-vis/DAD). The absorption wavelength was set to 625 nm (lambda(max)). The effect of different variables on the extraction was evaluated and optimized to enhance the sensitivity and extraction efficiency of the proposed method. The calibration curve was linear in the range of 1.00-10,000 mug L(-1) of BG in the initial solution with R(2)=0.979. Detection limit, based on three times the standard deviation of the blank, was 0.55 mug L(-1). All experiments were carried out at room temperature (25+/-0.5 degrees C). Descriptors Links Book Title Database Publisher Elsevier B.V Data Source Authors Es'haghi,Z., Khooni,M.A., Heidari,T. Original/Translated Title URL Date of Electronic 20110409 PMCID Editors
Determination of cyclic and linear siloxanes in wastewater samples by ultrasound-assisted dispersive liquid-liquid microextraction followed by gas chromatography-mass spectrometry	2014	Labaqua S.A., C/Dracma 16-18, Pol. Ind. Las Atalayas, 03114 Alicante, Spain.; Labaqua S.A., C/Dracma 16-18, Pol. Ind. Las Atalayas, 03114 Alicante, Spain.; Departamento de Quimica Analitica, Nutricion y Bromatologia e Instituto de Materiales, Universidad	Read more...
Source Type Print(0) Ref Type Journal Article Periodical, Full Talanta Periodical, Abbrev. Talanta Pub Date Free Form Mar Volume 120 Issue Start Page 191 Other Pages 197 Notes CI: (c) 2013; JID: 2984816R; 0 (Siloxanes); 0 (Solvents); 0 (Waste Water); 0 (Water Pollutants, Chemical); OTO: NOTNLM; 2013/07/23 [received]; 2013/11/08 [revised]; 2013/11/14 [accepted]; 2013/12/02 [aheadofprint]; ppublish Place of Publication Netherlands ISSN/ISBN 1873-3573; 0039-9140 Accession Number PMID: 24468359 Language eng SubFile Evaluation Studies; Journal Article; Research Support, Non-U.S. Gov't; IM DOI 10.1016/j.talanta.2013.11.042 [doi] Output Language Unknown(0) PMID 24468359 Abstract A fast, simple and environmentally friendly ultrasound-assisted dispersive liquid-liquid microextraction (USA-DLLME) procedure has been developed to preconcentrate eight cyclic and linear siloxanes from wastewater samples prior to quantification by gas chromatography-mass spectrometry (GC-MS). A two-stage multivariate optimization approach has been developed employing a Plackett-Burman design for screening and selecting the significant factors involved in the USA-DLLME procedure, which was later optimized by means of a circumscribed central composite design. The optimum conditions were: extractant solvent volume, 13 microL; solvent type, chlorobenzene; sample volume, 13 mL; centrifugation speed, 2300 rpm; centrifugation time, 5 min; and sonication time, 2 min. Under the optimized experimental conditions the method gave levels of repeatability with coefficients of variation between 10 and 24% (n=7). Limits of detection were between 0.002 and 1.4 microg L(-1). Calculated calibration curves gave high levels of linearity with correlation coefficient values between 0.991 and 0.9997. Finally, the proposed method was applied for the analysis of wastewater samples. Relative recovery values ranged between 71 and 116% showing that the matrix had a negligible effect upon extraction. To our knowledge, this is the first time that combines LLME and GC-MS for the analysis of methylsiloxanes in wastewater samples. Descriptors Links Book Title Database Publisher Elsevier B.V Data Source Authors Cortada,C., dos Reis,L.C., Vidal,L., Llorca,J., Canals,A. Original/Translated Title URL Date of Electronic 20131202 PMCID Editors
Determination of dynamic characteristics of microbiota in a fermented beverage produced by Brazilian Amerindians using culture-dependent and culture-independent methods	2010	Departamento de Biologia, Universidade Federal de Lavras, 37.200-000, Lavras, MG, Brazil.	Read more...
Source Type Print(0) Ref Type Journal Article Periodical, Full International journal of food microbiology Periodical, Abbrev. Int.J.Food Microbiol. Pub Date Free Form 15-Jun Volume 140 Issue 3-Feb Start Page 225 Other Pages 231 Notes CI: Copyright 2010; JID: 8412849; 2009/08/22 [received]; 2010/03/02 [revised]; 2010/03/18 [accepted]; 2010/03/27 [aheadofprint]; ppublish Place of Publication Netherlands ISSN/ISBN 1879-3460; 0168-1605 Accession Number PMID: 20413168 Language eng SubFile Journal Article; Research Support, Non-U.S. Gov't; IM DOI 10.1016/j.ijfoodmicro.2010.03.029 [doi] Output Language Unknown(0) PMID 20413168 Abstract Cauim is a fermented beverages prepared by Tapirape Amerindians in Brazil from substrates such as cassava, rice, peanuts, pumpkin, cotton seed and maize. Here we study the microorganisms associated with peanut and rice fermentation using a combination of culture-dependent and -independent methods. The bacterial population varied from 7.4 to 8.4 log CFU/ml. The yeast population varied from 4.0 to 6.6 log CFU/ml. A total of 297 bacteria and yeasts strains were isolated during fermentation, with 198 bacteria and 99 yeast. The Lactobacillus genus was dominant throughout fermentation. Bacteria and yeast community dynamics during the fermentation process were monitored by PCR-DGGE analysis. Both culture-dependent and -independent methods indicated that the bacterial species L. plantarum, L. fermentum, L. paracasei and L. brevis as well as the yeast species P. guilliermondii, K. lactis, Candida sp, R. toruloides and Saccharomyces cerevisiae, were dominant during fermentation. Multivariate analysis of microorganisms during beverage fermentation showed that the microbial community changed during the fermentation process. Descriptors Bacteria/classification/genetics/isolation & purification/metabolism, Beverages/microbiology, Brazil, Colony Count, Microbial, Fermentation, Molecular Sequence Data, Phylogeny, Polymerase Chain Reaction, Yeasts/classification/genetics/isolation & purification/metabolism Links Book Title Database Publisher Elsevier B.V Data Source Authors Ramos,C. L., de Almeida,E. G., Pereira,G. V., Cardoso,P. G., Dias,E. S., Schwan,R. F. Original/Translated Title URL Date of Electronic 20100327 PMCID Editors
Determination of eight bisphenol diglycidyl ethers in water by solid phase extraction-high performance liquid chromatography-tandem mass spectrometry	2014		Read more...
Source Type Print(0) Ref Type Journal Article Periodical, Full Se pu = Chinese journal of chromatography / Zhongguo hua xue hui Periodical, Abbrev. Se Pu Pub Date Free Form Jul Volume 32 Issue 7 Start Page 730 Other Pages 734 Notes JID: 9424804; ppublish Place of Publication China ISSN/ISBN 1000-8713; 1000-8713 Accession Number PMID: 25255565 Language chi SubFile English Abstract; Journal Article DOI Output Language Unknown(0) PMID 25255565 Abstract A solid phase extraction coupled with high performance liquid chromatography-tandem mass spectrometry (SPE-HPLC-MS/MS) method was developed for the determination of eight bisphenol diglycidyl ethers, including bisphenol A diglycidyl ether (BADGE), bisphenol A (3-chloro-2-hydroxypropyl) glycidyl ether (BADGE x HCl), bisphenol A bis (3-chloro-2-hydroxypropyl) ether (BADGE x 2HCl), bisphenol A (2, 3-dihydroxypropyl) glycidyl ether (BADGE x H2O), bisphenol A bis(2,3-dihydroxypropyl) ether (BADGE x 2H2O), bisphenol A (3-chloro-2-hydroxypropyl) (2,3-dihydroxypropyl) ether (BADGE x HCl x H2O), bisphenol F diglycidyl ether (BFDGE) and bisphenol F bis (3-chloro-2-hydroxypropyl) ether (BFDGE 2HCl) in water. A total of ten samples were collected from the leaching of the coatings for drinking water supply system. Then, 200 mL exposure water was preconcentrated on C18 solid-phase extraction cartridge. The eight compounds were analyzed by liquid chromatography-tandem mass spectrometry method on a C18 column by the gradient elution with methanol, water and 5 mmol/L ammonium acetate as mobile phases in the multiple reaction monitoring (MRM) scan mode. The external matrix standard solutions were used for the quantitative determination and the calibration curves of the eight compounds showed good linearity in the range of 0.007-5.00 microg/L with the correlation coefficients more than 0.999 0. The limits of quantification (LOQs) of the method were 7-91 ng/L. The spiked recoveries ranged from 79.1% to 101% with the relative standard deviations of 4.0% - 12%. The method is sensitive and accurate, and is applicable to the determination of bisphenol diglycidyl ethers in water. Descriptors Links Book Title Database Publisher Data Source Authors Zhang,H., Lin,S. Original/Translated Title URL Date of Electronic PMCID Editors
Determination of exposure to benzene, toluene and xylenes in Turkish primary school children by analysis of breath and by environmental passive sampling	2010	Department of Epidemiology, Biostatistics and Health Technology Assessment, Radboud University Nijmegen Medical Centre, P.O. Box 9101, Nijmegen, The Netherlands. p.scheepers@ebh.umcn.nl	Read more...
Source Type Print(0) Ref Type Journal Article Periodical, Full The Science of the total environment Periodical, Abbrev. Sci.Total Environ. Pub Date Free Form 15-Sep Volume 408 Issue 20 Start Page 4863 Other Pages 4870 Notes LR: 20131121; CI: Copyright 2010; JID: 0330500; 0 (Air Pollutants); 0 (Volatile Organic Compounds); 0 (Xylenes); 3FPU23BG52 (Toluene); J64922108F (Benzene); 2010/02/19 [received]; 2010/05/18 [revised]; 2010/06/17 [accepted]; ppublish Place of Publication Netherlands ISSN/ISBN 1879-1026; 0048-9697 Accession Number PMID: 20619876 Language eng SubFile Journal Article; Research Support, Non-U.S. Gov't; IM DOI 10.1016/j.scitotenv.2010.06.037 [doi] Output Language Unknown(0) PMID 20619876 Abstract Benzene, toluene, m/p-xylene and o-xylene (BTX) are toxic volatile organic compounds and ubiquitous air pollutants. Smoking and consumer products are indoor sources of BTX, whereas traffic and industrial activities are primary sources contributing to outdoor levels of BTX. The aim of this study was to characterize exposure of children to BTX by personal air sampling using diffusive samplers and by analysis of end-exhaled air. For this study, 101 children of 10-11 years of age were recruited from four primary schools in Southern Turkey during the warm season (May 2008). Two schools were situated in a residential area near primary and secondary iron and steel works (Payas) and two schools were located in a non-industrialized city (Iskenderun). The children and their parents were visited at home for an interview and to identify possible sources of BTX in the residence. Median concentrations of benzene determined by diffusive samplers were higher in Payas (4.1 microg/m(3)) than in Iskenderun (2.7 microg/m(3), p<0.001). For toluene, no differences were observed, whereas for xylene isomers air concentrations tended to be lower for children living in Payas. The median end-exhaled air concentrations were 8.2, 29, 3.8, and 5.7 pmol/L for benzene, toluene, m/p-xylene and o-xylene, respectively (Payas), and 6.9, 25, 4.9, and 6.0 pmol/L, respectively (Iskenderun). Concentrations of toluene in end-exhaled air were 50% higher in children living with household members who smoked indoors (p<0.05) and benzene in end-exhaled air was more than 3-fold higher for those children who were exposed to tobacco smoke inside a vehicle (p<0.001). End-exhaled concentrations of benzene were also higher in children living in a residence with an attached garage (p<0.05). These exposure modifying factors were not identified when using the results obtained with diffusive samplers. Descriptors Air Pollutants/analysis/metabolism, Benzene/analysis/metabolism, Breath Tests, Child, Environmental Exposure/analysis, Environmental Monitoring, Female, Humans, Male, Toluene/analysis/metabolism, Volatile Organic Compounds/analysis/metabolism, Xylenes/analysis/metabolism Links Book Title Database Publisher Elsevier B.V Data Source Authors Scheepers,P. T., Konings,J., Demirel,G., Gaga,E. O., Anzion,R., Peer,P. G., Dogeroglu,T., Ornektekin,S., van Doorn,W. Original/Translated Title URL Date of Electronic PMCID Editors
Determination of hydroxy metabolites of polycyclic aromatic hydrocarbons by fully automated solid-phase microextraction derivatization and gas chromatography-mass spectrometry	2007	State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China. cesltg@mail.sysu.edu.cn	Read more...
Source Type Print(0) Ref Type Journal Article Periodical, Full Journal of chromatography.A Periodical, Abbrev. J.Chromatogr.A Pub Date Free Form 30-Nov Volume 1173 Issue 2-Jan Start Page 37 Other Pages 43 Notes LR: 20101118; JID: 9318488; 0 (Polycyclic Hydrocarbons, Aromatic); 2007/08/08 [received]; 2007/10/12 [revised]; 2007/10/16 [accepted]; 2007/10/22 [aheadofprint]; ppublish Place of Publication Netherlands ISSN/ISBN 0021-9673; 0021-9673 Accession Number PMID: 17976631 Language eng SubFile Journal Article; Research Support, Non-U.S. Gov't; IM DOI S0021-9673(07)01783-9 [pii] Output Language Unknown(0) PMID 17976631 Abstract A fully automated sample pretreatment method was developed for the detection of mono and dihydroxy metabolites of polycyclic aromatic hydrocarbons (PAHs) by gas chromatography-mass spectrometry in the selected ion monitoring mode. Direct immersion solid-phase microextraction for the extraction of target compounds and the headspace on-fiber silylation with N,O-bis(trimethylsilyl)trifluoroacetamide were performed automatically by a multipurpose autosampler (MPS2). The operating conditions including extraction time, derivatization time, ionic strength, pH, and incubation temperature were optimized. Calibration responses of nine metabolites of PAHs over a concentration range of 0.1-100 microg L(-1) with a correlation coefficient of 0.999 were obtained. The detection limits of the nine metabolites in mini pore water, minimal salts medium and soil extract culture medium were in the range of 0.001-0.013, 0.002-0.024 and 0.002-0.134 microg L(-1), respectively, while the respective quantification limits were 0.003-0.044, 0.005-0.081 and 0.008-0.447 microg L(-1). The reliability was confirmed by the traditional solid-phase extraction method. The proposed method could be used to analyze the metabolites of PAHs degraded by microorganisms such as algae and to determine the biodegradation pathways of PAHs. Descriptors Biodegradation, Environmental, Chlorophyta/metabolism, Gas Chromatography-Mass Spectrometry/methods, Polycyclic Hydrocarbons, Aromatic/analysis/metabolism, Reproducibility of Results, Solid Phase Microextraction/methods Links Book Title Database Publisher Data Source Authors Luan,T., Fang,S., Zhong,Y., Lin,L., Chan,S. M., Lan,C., Tam,N. F. Original/Translated Title URL Date of Electronic 20071022 PMCID Editors
Determination of hydroxylated metabolites of polycyclic aromatic hydrocarbons in sediment samples by combining subcritical water extraction and dispersive liquid-liquid microextraction with derivatization	2012	MOE Key Laboratory of Aquatic Product Safety, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, People's Republic of China.	Read more...
Source Type Print(0) Ref Type Journal Article Periodical, Full Analytica Chimica Acta Periodical, Abbrev. Anal.Chim.Acta Pub Date Free Form 13-Nov Volume 753 Issue Start Page 57 Other Pages 63 Notes 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 Place of Publication Netherlands ISSN/ISBN 1873-4324; 0003-2670 Accession Number PMID: 23107137 Language eng SubFile Journal Article; Research Support, Non-U.S. Gov't; IM DOI 10.1016/j.aca.2012.09.028 [doi] Output Language Unknown(0) PMID 23107137 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). 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. Descriptors Links Book Title Database Publisher Elsevier B.V Data Source Authors Wang,X., Lin,L., Luan,T., Yang,L., Tam,N.F. Original/Translated Title URL Date of Electronic 20121001 PMCID Editors
Determination of hydroxylated polycyclic aromatic hydrocarbons by HPLC-photoionization tandem mass spectrometry in wood smoke particles and soil samples	2015	Department of Environmental Science and Analytical Chemistry, Arrhenius Laboratory, Stockholm University, 10691, Stockholm, Sweden.	Read more...
Source Type Print(0) Ref Type Journal Article Periodical, Full Analytical and bioanalytical chemistry Periodical, Abbrev. Anal.Bioanal Chem. Pub Date Free Form Jun Volume 407 Issue 16 Start Page 4523 Other Pages 4534 Notes LR: 20160512; JID: 101134327; 0 (Polycyclic Hydrocarbons, Aromatic); 0 (Smoke); 0 (Soil); 2014/12/11 [received]; 2015/03/12 [accepted]; 2015/03/04 [revised]; 2015/05/03 [aheadofprint]; ppublish Place of Publication Germany ISSN/ISBN 1618-2650; 1618-2642 Accession Number PMID: 25935668 Language eng SubFile Journal Article; Research Support, Non-U.S. Gov't; IM DOI 10.1007/s00216-015-8638-x [doi] Output Language Unknown(0) PMID 25935668 Abstract A simple and fast method for analysis of hydroxylated polycyclic aromatic hydrocarbons using pressurized liquid extraction and high performance liquid chromatography utilizing photoionization tandem mass spectrometry was developed. Simultaneous separation and determination of nine hydroxylated polycyclic aromatic hydrocarbons and two hydroxy biphenyls could be performed in negative mode with a run time of 12 min, including equilibration in 5 min. The calibration curves were in two concentration ranges; 1-50 ng/mL and 0.01-50 mug/mL, with coefficients of correlation R (2) > 0.997. The limits of detection and method quantification limits were in the range of 9-56 pg and 5-38 ng/g, respectively. A two-level full factorial experimental design was used for screening of conditions with the highest impact on the extraction. The extraction procedure was automated and suitable for a large number of samples. The extraction recoveries ranged from 70 to 102 % and the matrix effects were between 92 and 104 %. The overall method was demonstrated on wood smoke particles and soil samples with good analytical performance, and five OH-PAHs were determined in the concentration range of 0.19-210 mug/g. As far as we know, hydroxylated polycyclic aromatic hydrocarbons were determined in wood smoke and soil samples using photoionization mass spectrometry for the first time in this present study. Accordingly, this study shows that high performance liquid chromatography photoionization tandem mass spectrometry can be a good option for the determination of hydroxylated polycyclic aromatic hydrocarbons in complex environmental samples. Graphical Abstract The method developed in this study was used to determine hydroxylated polycyclic aromatic hydrocarbons in wood smoke and soil. Descriptors Links Book Title Database Publisher Data Source Authors Avagyan,R., Nystrom,R., Boman,C., Westerholm,R. Original/Translated Title URL Date of Electronic 20150503 PMCID Editors
Determination of non-steroidal anti-inflammatory drugs in urine by hollow-fiber liquid membrane-protected solid-phase microextraction based on sol-gel fiber coating	2012	Department of Chemistry, Faculty of Sciences, Ferdowsi University of Mashhad, Iran. asyazdi@um.ac.ir	Read more...
Source Type Print(0) Ref Type Journal Article Periodical, Full Journal of chromatography.B, Analytical technologies in the biomedical and life sciences Periodical, Abbrev. J.Chromatogr.B.Analyt Technol.Biomed.Life.Sci. Pub Date Free Form 1-Nov Volume 908 Issue Start Page 67 Other Pages 75 Notes LR: 20151119; CI: Copyright (c) 2012; JID: 101139554; 0 (Anti-Inflammatory Agents, Non-Steroidal); 0 (Nanotubes, Carbon); 144O8QL0L1 (Diclofenac); 451W47IQ8X (Sodium Chloride); 57Y76R9ATQ (Naproxen); NV1779205D (1-Octanol); WK2XYI10QM (Ibuprofen); 2012/05 Place of Publication Netherlands ISSN/ISBN 1873-376X; 1570-0232 Accession Number PMID: 23122403 Language eng SubFile Journal Article; IM DOI 10.1016/j.jchromb.2012.09.040 [doi] Output Language Unknown(0) PMID 23122403 Abstract A new rapid, simple and effective cleanup procedure is demonstrated for the determination of ibuprofen, naproxen and diclofenac in urine samples by using hollow-fiber liquid membrane-protected solid-phase microextraction (HFLM-SPME) based on sol-gel technique and gas chromatography-flame ionization detector (GC-FID). In this technique, a sol-gel coated fiber was protected with a length of porous polypropylene hollow fiber membrane which was filled with water-immiscible organic phase. Subsequently the whole device was immersed into urine sample for extraction. Poly(ethylene glycol) (PEG) grafted onto multi-walled carbon nanotubes (PEG-g-MWCNTs) was used as extraction phase to prepare the sol-gel SPME fiber. Important parameters influencing the extraction efficiency such as desorption temperature and time, organic solvent, extraction temperature and time, pH, stirring speed and salt effect were investigated and optimized. Under the optimal conditions, the method detection limits (S/N=3) were in the range of 0.03-0.07ngmL(-1) and the limits of quantification (S/N=10) between 0.08 and 0.15ngmL(-1). Relative standard deviations for intra-day and inter-day precisions were 4.8-9.0% and 4.9-8.1%, respectively. Subsequently, the method was successfully applied to human urine fractions after administration of ibuprofen, naproxen and diclofenac. Descriptors Links Book Title Database Publisher Elsevier B.V Data Source Authors Sarafraz-Yazdi,A., Amiri,A., Rounaghi,G., Eshtiagh-Hosseini,H. Original/Translated Title URL Date of Electronic 20121006 PMCID Editors

E-mail