WTS database

Title	Pub Year	Author Sort descending	SearchLink
Crystal structure of (E)-4-hy-droxy-N'-(3-hy-droxy-benzyl-idene)benzohydrazide monohydrate	2014	Department of Chemistry, University of Aberdeen, Meston Walk, Aberdeen AB24 3UE, Scotland.; Department of Chemistry, University of Aberdeen, Meston Walk, Aberdeen AB24 3UE, Scotland.; Department of Chemistry, University of Aberdeen, Meston Walk, Aberdeen	Read more...
Source Type Print(0) Ref Type Journal Article Periodical, Full Acta crystallographica.Section E, Structure reports online Periodical, Abbrev. Acta Crystallogr.Sect.E.Struct.Rep.Online Pub Date Free Form 1-Aug Volume 70 Issue Pt 9 Start Page o891 Other Pages 2 Notes LR: 20141015; JID: 101089178; OID: NLM: PMC4186143; OTO: NOTNLM; 2014/09/01 [ecollection]; 2014/05/21 [received]; 2014/05/22 [accepted]; 2014/08/01 [epublish]; epublish Place of Publication United States ISSN/ISBN 1600-5368; 1600-5368 Accession Number PMID: 25309238 Language eng SubFile Journal Article DOI 10.1107/S1600536814011908 [doi] Output Language Unknown(0) PMID 25309238 Abstract In the title benzohydrazide hydrate, C14H12N2O3.H2O, the dihedral angle between the aromatic rings is 58.11 (6) degrees and the C=O and N-H groups adopt an anti orientation. The main twist in the mol-ecule occurs about the C(=O)-Car (ar = aromatic) bond, with an N-C(=O)-Car-Car torsion angle of -43.5 (2) degrees . In the crystal, the components are linked by N-Hcdots, three dots, centeredO, O-Hcdots, three dots, centeredN and O-Hcdots, three dots, centeredO hydrogen bonds. These inter-actions generate [10-1] chains, with adjacent organic mol-ecules linked by inversion symmetry generating either pairs of N-Hcdots, three dots, centeredO links [R 2 (2)(16) loops] or pairs of O-Hcdots, three dots, centeredO links [R 2 (2)(20) loops]. Pairs of water mol-ecules are located in the R 2 (2)(20) loops and form their own O-Hcdots, three dots, centeredO and O-Hcdots, three dots, centeredN hydrogen bonds to adjacent organic mol-ecules in the chain. Finally, an inter-chain O-Hcdots, three dots, centeredO hydrogen-bond link from the 4-hy-droxy group generates (010) sheets. Descriptors Links Book Title Database Publisher Data Source Authors Harrison,W.T., Low,J.N., Wardell,J.L. Original/Translated Title URL Date of Electronic 20140801 PMCID PMC4186143 Editors
Crystal structures of trans-di-chlorido-tetra-kis-[1-(2,6-diiso-propyl-phen-yl)-1H-imidazole-kappaN (3)]iron(II), trans-di-bromido-tetra-kis-[1-(2,6-diiso-propyl-phen-yl)-1H-imidazole-kappaN (3)]iron(II) and trans-di-bromido-tetra-kis-[1-(2,6-diiso-propyl	2014	Department of Chemistry, University of Fribourg, Av. de Perolles, CH-1700 Fribourg, Switzerland.; Department of Chemistry, University of Fribourg, Av. de Perolles, CH-1700 Fribourg, Switzerland.; Benefri Crystallography Service, University of Neuchatel, A	Read more...
Source Type Print(0) Ref Type Journal Article Periodical, Full Acta crystallographica.Section E, Structure reports online Periodical, Abbrev. Acta Crystallogr.Sect.E.Struct.Rep.Online Pub Date Free Form 19-Jul Volume 70 Issue Pt 8 Start Page 72 Other Pages 76 Notes LR: 20140926; JID: 101089178; OID: NLM: PMC4158527; OTO: NOTNLM; 2014/08/01 [ecollection]; 2014/06/12 [received]; 2014/06/15 [accepted]; 2014/07/19 [epublish]; epublish Place of Publication United States ISSN/ISBN 1600-5368; 1600-5368 Accession Number PMID: 25249858 Language eng SubFile Journal Article DOI 10.1107/S1600536814014056 [doi] Output Language Unknown(0) PMID 25249858 Abstract The title compounds, [FeCl2(C15H20N2)4], (I), [FeBr2(C15H20N2)4], (II), and [FeBr2(C15H20N2)4].2C4H10O, (IIb), respectively, all have triclinic symmetry, with (I) and (II) being isotypic. The Fe(II) atoms in each of the structures are located on an inversion center. They have octa-hedral FeX 2N4 (X = Cl and Br, respectively) coordination spheres with the Fe(II) atom coordinated by two halide ions in a trans arrangement and by the tertiary N atom of four aryl-imidazole ligands [1-(2,6-diiso-propyl-phen-yl)-1H-imidazole] in the equatorial plane. In the two independent ligands, the benzene and imidazole rings are almost normal to one another, with dihedral angles of 88.19 (15) and 79.26 (14) degrees in (I), 87.0 (3) and 79.2 (3) degrees in (II), and 84.71 (11) and 80.58 (13) degrees in (IIb). The imidazole rings of the two independent ligand mol-ecules are inclined to one another by 70.04 (15), 69.3 (3) and 61.55 (12) degrees in (I), (II) and (IIb), respectively, while the benzene rings are inclined to one another by 82.83 (13), 83.0 (2) and 88.16 (12) degrees , respectively. The various dihedral angles involving (IIb) differ slightly from those in (I) and (II), probably due to the close proximity of the diethyl ether solvent mol-ecule. There are a number of C-Hcdots, three dots, centeredhalide hydrogen bonds in each mol-ecule involving the CH groups of the imidazole units. In the structures of compounds (I) and (II), mol-ecules are linked via pairs of C-Hcdots, three dots, centeredhalogen hydrogen bonds, forming chains along the a axis that enclose R 2 (2)(12) ring motifs. The chains are linked by C-Hcdots, three dots, centeredpi inter-actions, forming sheets parallel to (001). In the structure of compound (IIb), mol-ecules are linked via pairs of C-Hcdots, three dots, centeredhalogen hydrogen bonds, forming chains along the b axis, and the diethyl ether solvent mol-ecules are attached to the chains via C-Hcdots, three dots, centeredO hydrogen bonds. The chains are linked by C-Hcdots, three dots, centeredpi inter-actions, forming sheets parallel to (001). In (I) and (II), the methyl groups of an isopropyl group are disordered over two positions [occupancy ratio = 0.727 (13):0.273 (13) and 0.5:0.5, respectively]. In (IIb), one of the ethyl groups of the diethyl ether solvent mol-ecule is disordered over two positions (occupancy ratio = 0.5:0.5). Descriptors Links Book Title Database Publisher Data Source Authors Mafua,R., Jenny,T., Labat,G., Neels,A., Stoeckli-Evans,H. Original/Translated Title URL Date of Electronic 20140719 PMCID PMC4158527 Editors
Application of chemometric assisted dispersive liquid-liquid microextraction to the determination of personal care products in natural waters	2009	Department of Chemistry, University of Ioannina, Ioannina 45110, Greece.	Read more...
Source Type Print(0) Ref Type Journal Article Periodical, Full Analytica Chimica Acta Periodical, Abbrev. Anal.Chim.Acta Pub Date Free Form 7-Sep Volume 649 Issue 2 Start Page 135 Other Pages 140 Notes LR: 20121115; JID: 0370534; 0 (Phthalic Acids); 0 (Polycyclic Compounds); 0 (Solvents); 0 (Water Pollutants, Chemical); 6O7F7IX66E (phthalic acid); 2009/05/28 [received]; 2009/07/07 [revised]; 2009/07/09 [accepted]; 2009/07/14 [aheadofprint]; ppublish Place of Publication Netherlands ISSN/ISBN 1873-4324; 0003-2670 Accession Number PMID: 19699389 Language eng SubFile Journal Article; IM DOI 10.1016/j.aca.2009.07.028 [doi] Output Language Unknown(0) PMID 19699389 Abstract A rapid and simple method for the determination of two phthalates and five polycyclic musks in water samples using dispersive liquid-liquid microextraction (DLLME) mated to chemometrics and coupled to GC-MS was developed. Volume of extraction (CCl4) and disperser solvent (MeOH), pH, ionic strength, extraction time, centrifugation time as well as centrifugation speed were optimized in a 2(7-4) Plackett-Burman design. The obtained significant factors were optimized by using a central composite design (CCD) and the quadratic model between the dependent and the independent variables was built. The optimum experimental conditions of the proposed method were: 250 microL carbon tetrachloride, 0.62 mL methanol, 7.5 min centrifugation time, natural pH containing 0% (w/v) NaCl, while keeping centrifugation speed fixed at 4000 rpm. The calculated calibration curves gave high-level linearity for all target analytes with correlation coefficients ranging between 0.9970 and 0.9992. The repeatability and reproducibility of the proposed method, expressed as relative standard deviation, varied between 2.6% to 9.7% and 5.7% to 12.2%, respectively. The obtained LOD values were in the range of 8-63 ng L(-1). Descriptors Fresh Water/analysis, Gas Chromatography-Mass Spectrometry/methods, Humans, Hydrogen-Ion Concentration, Osmolar Concentration, Phthalic Acids/analysis/isolation & purification, Polycyclic Compounds/analysis/isolation & purification, Solvents/chemistry, Water Pollutants, Chemical/analysis/isolation & purification Links Book Title Database Publisher Data Source Authors Panagiotou,A. N., Sakkas,V. A., Albanis,T. A. Original/Translated Title URL Date of Electronic 20090714 PMCID Editors
Bisphenol diglycidyl ethers and bisphenol A and their hydrolysis in drinking water	2015	Department of Chemistry, University of Kansas, 2010 Malott Hall, 1251 Wescoe Drive, Lawrence, KS 66045, United States.; Department of Civil and Environmental Engineering, Utah State University, 4110 Old Main Hill, EL 211D, Logan, UT 84322-4110, United Sta	Read more...
Source Type Print(0) Ref Type Journal Article Periodical, Full Water research Periodical, Abbrev. Water Res. Pub Date Free Form 1-Apr Volume 72 Issue Start Page 331 Other Pages 339 Notes CI: Copyright (c) 2015; JID: 0105072; 0 (Benzhydryl Compounds); 0 (Drinking Water); 0 (Epoxy Compounds); 0 (Phenols); 0 (bisphenol F diglycidyl ether); F3XRM1NX4H (2,2-bis(4-glycidyloxyphenyl)propane); MLT3645I99 (bisphenol A); OTO: NOTNLM; 2014/05/23 [re Place of Publication England ISSN/ISBN 1879-2448; 0043-1354 Accession Number PMID: 25448766 Language eng SubFile Journal Article; Research Support, U.S. Gov't, Non-P.H.S.; IM DOI 10.1016/j.watres.2014.09.043 [doi] Output Language Unknown(0) PMID 25448766 Abstract Epoxy coatings are commonly used to protect the interior (and exterior) surfaces of water mains and storage tanks and can be used on the interior surfaces of water pipes in homes, hospitals, hotels, and other buildings. Common major components of epoxies include bisphenols, such as bisphenol A (BPA) or bisphenol F (BPF), and their reactive prepolymers, bisphenol A diglycidyl ether (BADGE) and bisphenol F diglycidyl ether (BFDGE), respectively. There currently are health concerns about the safety of BPA and BPF due to known estrogenic effects. Determination of key bisphenol leachates, development of a hydrolysis model, and identification of stable hydrolysis products will aid in assessment of human bisphenol exposure through ingestion of drinking water. Liquid chromatography/mass spectrometry (LC/MS/MS) was used for quantitation of key analytes, and a pseudo-first order kinetic approach was used for modeling. In fill-and-dump studies on epoxy-coated pipe specimens, BADGE and a BPA-like compound were identified as leachates. The BADGE hydrolysis model predicts BADGE half-lives at pH 7 and 15, 25, 35, and 40 degrees C to be 11, 4.6, 2.0, and 1.4 days respectively; the BFDGE half-life was 5 days at pH 7 and 25 degrees C. The two identified BADGE hydrolysis products are BADGE-H2O and BADGE 2H2O, with BADGE 2H2O being the final end product under the conditions studied. Descriptors Links Book Title Database Publisher Elsevier Ltd Data Source Authors Lane,R.F., Adams,C.D., Randtke,S.J., Carter,R.E.,Jr Original/Translated Title URL Date of Electronic 20141016 PMCID Editors
Chlorination and chloramination of bisphenol A, bisphenol F, and bisphenol A diglycidyl ether in drinking water	2015	Department of Chemistry, University of Kansas, 2010 Malott Hall, 1251 Wescoe Drive, Lawrence, KS, 66045, United States.; Department of Civil and Environmental Engineering, Utah State University, 4110 Old Main Hill, EL 211D, Logan, UT, 84322-4110, United S	Read more...
Source Type Print(0) Ref Type Journal Article Periodical, Full Water research Periodical, Abbrev. Water Res. Pub Date Free Form 1-Aug Volume 79 Issue Start Page 68 Other Pages 78 Notes CI: Copyright (c) 2015; JID: 0105072; 0 (Benzhydryl Compounds); 0 (Chloramines); 0 (Drinking Water); 0 (Endocrine Disruptors); 0 (Epoxy Compounds); 0 (Phenols); 0 (Water Pollutants, Chemical); 10599-90-3 (chloramine); F3XRM1NX4H (2,2-bis(4-glycidyloxyphen Place of Publication England ISSN/ISBN 1879-2448; 0043-1354 Accession Number PMID: 25965889 Language eng SubFile Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.; IM DOI 10.1016/j.watres.2015.04.014 [doi] Output Language Unknown(0) PMID 25965889 Abstract Bisphenol A (BPA), bisphenol F (BPF), and bisphenol A diglycidyl ether (BADGE) are common components of epoxy coatings used in food packaging and in drinking water distribution systems. Thus, leachates from the epoxy may be exposed to the disinfectants free chlorine (Cl2/HOCl/OCl(-)) and monochloramine (MCA, NH2Cl). Bisphenols are known endocrine disrupting chemicals (EDC) with estrogenic activity. Chlorination by-products have the potential to have reduced or enhanced estrogenic qualities, and are, therefore, of interest. In this work, chlorination reactions for bisphenols and BADGE were explored (via LC/MS/MS) and kinetic modeling (using a pseudo-first order approach) was conducted to predict the fate of these compounds in drinking water. The half-lives of BPA and BPF with 1 mg/L of free chlorine ranged from 3 to 35 min over the pH range from 6 to 11 and the temperature range of 10-25 degrees C. Half-lives for reactions of BPA and BPF with a nominal MCA concentration of 3.5 mg/L as Cl2 were from 1 to 10 days and were greater at higher pH and lower temperature. Formation of chlorinated bisphenol A by-products was observed during the kinetic studies. BADGE was found unreactive with either oxidant. Descriptors Links Book Title Database Publisher . Published by Elsevier Ltd Data Source Authors Lane,R.F., Adams,C.D., Randtke,S.J., Carter,R.E.,Jr Original/Translated Title URL Date of Electronic 20150424 PMCID Editors
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
Crystal structure of 4-(prop-2-yn-yloxy)-2,2,6,6-tetra-methyl-piperidin-1-ox-yl	2014	Department of Chemistry, University of Otago, PO Box 56, Dunedin, New Zealand.; Department of Chemistry, University of Otago, PO Box 56, Dunedin, New Zealand.; Department of Chemistry, University of Otago, PO Box 56, Dunedin, New Zealand.; Department of C	Read more...
Source Type Print(0) Ref Type Journal Article Periodical, Full Acta crystallographica.Section E, Structure reports online Periodical, Abbrev. Acta Crystallogr.Sect.E.Struct.Rep.Online Pub Date Free Form 9-Aug Volume 70 Issue Pt 9 Start Page 130 Other Pages 133 Notes LR: 20141015; JID: 101089178; OID: NLM: PMC4186184; OTO: NOTNLM; 2014/09/01 [ecollection]; 2014/08/04 [received]; 2014/08/05 [accepted]; 2014/08/09 [epublish]; epublish Place of Publication United States ISSN/ISBN 1600-5368; 1600-5368 Accession Number PMID: 25309160 Language eng SubFile Journal Article DOI 10.1107/S1600536814017991 [doi] Output Language Unknown(0) PMID 25309160 Abstract The title compound, C12H20NO2, was synthesized from 4-hy-droxy-2,2,6,6-tetra-methyl-piperidin-1-oxyl (hy-droxy-TEMPO) and propargyl bromide. The six-membered ring adopts a flattened chair conformation and carries a propyn-yloxy substituent in an equatorial orientation at the 4-position. The N-O bond length of the piperidin-1-oxyl unit is 1.289 (3) A. In the crystal, C-Hcdots, three dots, centeredO hydrogen bonds combine with unusual C-Hcdots, three dots, centeredpi inter-actions involving the alkyne unit as acceptor to generate a three-dimensional network. Descriptors Links Book Title Database Publisher Data Source Authors Goswami,S.K., Hanton,L.R., McAdam,C.J., Moratti,S.C., Simpson,J. Original/Translated Title URL Date of Electronic 20140809 PMCID PMC4186184 Editors
Determination of polycyclic aromatic hydrocarbons using lab on valve dispersive liquid-liquid microextraction coupled to high performance chromatography	2015	Department of Chemistry, University of the Balearic Islands, 07122 Palma de Mallorca, Spain.; Department of Chemistry, University of the Balearic Islands, 07122 Palma de Mallorca, Spain.; Department of Chemistry, University of the Balearic Islands, 07122	Read more...
Source Type Print(0) Ref Type Journal Article Periodical, Full Talanta Periodical, Abbrev. Talanta Pub Date Free Form 1-Jun Volume 138 Issue Start Page 190 Other Pages 195 Notes CI: Copyright (c) 2015; JID: 2984816R; 0 (Polycyclic Hydrocarbons, Aromatic); 0 (Water Pollutants, Chemical); OTO: NOTNLM; 2014/10/27 [received]; 2015/01/28 [revised]; 2015/02/03 [accepted]; 2015/02/11 [aheadofprint]; ppublish Place of Publication Netherlands ISSN/ISBN 1873-3573; 0039-9140 Accession Number PMID: 25863390 Language eng SubFile Journal Article; Research Support, Non-U.S. Gov't; IM DOI 10.1016/j.talanta.2015.02.007 [doi] Output Language Unknown(0) PMID 25863390 Abstract In this work, dispersive liquid-liquid microextraction (DLLME) method was applied for high performance liquid chromatography (HPLC) determination of 15 PAHs in aqueous matrices.The extraction procedure was automated using a system of multisyringe flow injection analysis coupled to HPLC instrument with fluorescence detector. Factors affecting the extraction process, such as type and volume of extraction and dispersive solvent, extraction time and centrifugation step were investigated thoroughly and optimized utilizing factorial design. The best recovery was achieved using 100 microL of trichloroethylene as the extraction solvent and 900 microL of acetonitrile as the dispersive solvent.The results showed that extraction time has no effect on the recovery of PAHs. The enrichment factors of PAHs were in the range of 86-95 with limits of detection of 0.02-0.6 microg L(-1). The linearity was 0.2-600 microg L(-1) for different PAHs. The relative standard deviation (RSD) for intra- and inter-day of extraction of PAHs were in the range of 1.6-4.7 and 2.1-5.3, respectively, for five measurements.The developed method was used to assess the occurrence of 15 PAHs in tap water, rain waters and river surface waters samples. Descriptors Links Book Title Database Publisher Elsevier B.V Data Source Authors Fernandez,M., Clavijo,S., Forteza,R., Cerda,V. Original/Translated Title URL Date of Electronic 20150211 PMCID Editors
Determination of polycyclic aromatic hydrocarbons in solid matrices using automated cold fiber headspace solid phase microextraction technique	2013	Department of Chemistry, University of Waterloo, Ontario, N2L 3G1, Canada.	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 13-Sep Volume 1307 Issue Start Page 66 Other Pages 72 Notes CI: Copyright (c) 2013; JID: 9318488; 0 (Diethylamines); 0 (Polycyclic Hydrocarbons, Aromatic); 0 (Soil); 0 (Soil Pollutants); B035PIS86W (diethylamine); OTO: NOTNLM; 2013/06/18 [received]; 2013/07/29 [revised]; 2013/07/30 [accepted]; 2013/08/06 [aheadofp Place of Publication Netherlands ISSN/ISBN 1873-3778; 0021-9673 Accession Number PMID: 23942478 Language eng SubFile Journal Article; Research Support, Non-U.S. Gov't; IM DOI 10.1016/j.chroma.2013.07.110 [doi] Output Language Unknown(0) PMID 23942478 Abstract The extraction efficiency of analytes in a cold fiber headspace solid-phase microextraction (CF-HS-SPME) system was investigated both theoretically and experimentally. The system was applied for quantitative extraction of polycyclic aromatic hydrocarbons (PAHs) from solid matrices. In order to achieve better extraction efficiency for PAHs, a method with programmed coating temperature was considered and optimized, leading to higher extraction efficiency for most studied analytes when compared with traditional methods. After optimization of extraction with the programmed coating temperature method, the recoveries were above 90% for the majority of tested compounds from the sand matrix, resulting in exhaustive extraction. Certified reference soil was used to evaluate the cold fiber SPME system. Several organic solvents were used to improve the extraction efficiency. Diethylamine was used successfully to realize the exhaustive extraction for volatile compounds and enhance the recoveries of 60-75% for semi-volatile PAHs. Obtained results indicate that the automated cold fiber extraction is a convenient approach to facilitate high throughput, solventless sample preparation. Descriptors Links Book Title Database Publisher Elsevier B.V Data Source Authors Guo,J., Jiang,R., Pawliszyn,J. Original/Translated Title URL Date of Electronic 20130806 PMCID Editors
Novel multiwalled carbon nanotubes-polyaniline composite film coated platinum wire for headspace solid-phase microextraction and gas chromatographic determination of phenolic compounds	2009	Department of Chemistry, Wuhan University, Wuhan 430072, China.	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 1-May Volume 1216 Issue 18 Start Page 3751 Other Pages 3757 Notes LR: 20131121; JID: 9318488; 0 (Aniline Compounds); 0 (Nanotubes, Carbon); 0 (Phenols); 0 (Water Pollutants, Chemical); 0 (polyaniline); 49DFR088MY (Platinum); 2008/12/19 [received]; 2009/03/03 [revised]; 2009/03/05 [accepted]; 2009/03/13 [aheadofprint]; p Place of Publication Netherlands ISSN/ISBN 1873-3778; 0021-9673 Accession Number PMID: 19306999 Language eng SubFile Evaluation Studies; Journal Article; Research Support, Non-U.S. Gov't; IM DOI 10.1016/j.chroma.2009.03.013 [doi] Output Language Unknown(0) PMID 19306999 Abstract A novel multiwalled carbon nanotubes-polyaniline composite (MWCNTs-PANI) film coated platinum wire was fabricated through electrochemical deposition. The coating was characterized by scanning electron microscopy (SEM), Fourier transform infrared (FTIR) spectrophotometry and thermogravimetry. It was found that the coating was porous and had large specific area and adsorption capacity; in the composite MWCNTs and polyaniline interacted with each other and the film kept stable up to 320 degrees C. The as-made fiber was used for the headspace solid-phase microextraction (HS-SPME) of some phenolic compounds (i.e. 2-chlorophenol, 2,4-dichlorophenol, 2-methylphenol, 3-methylphenol, 2,6-dimethylphenol, 2-nitrophenol), followed by gas chromatographic analysis. The MWCNTs-PANI coating showed better analytical performance than PANI. Under the optimized conditions, the detection limits were 1.89-65.9 ng L(-1), the relative standard deviations (RSDs) were 2.7-6.5% for six successive measurements with single fiber, the RSDs for fiber-to-fiber were 5.2-12.4%, the linear ranges exceeded two magnitudes with correlation coefficient above 0.992. The fiber could be used for more than 250 times without decrease of efficiency. The proposed method was successfully applied to the extraction and determination of phenolic compounds in water sample, and the recoveries were 87.7-111.5% for different analytes. In addition, the fiber also presented advantages of easy preparation and low cost. Therefore, it is a promising SPME fiber. Descriptors Adsorption, Aniline Compounds/chemistry, Chromatography, Gas/methods, Nanotubes, Carbon/chemistry, Phenols/chemistry, Platinum/chemistry, Porosity, Solid Phase Microextraction/economics/instrumentation/methods, Water Pollutants, Chemical/chemistry Links Book Title Database Publisher Data Source Authors Du,W., Zhao,F., Zeng,B. Original/Translated Title URL Date of Electronic 20090313 PMCID Editors

E-mail