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The subject of interest is:
waterpipe, water-pipe, nargile, narghile, arguileh, arguile, shisha, sheesha, chichi, hubble bubble, hubbly bubbly, goza, hookah, bong
| Title | Pub Year | Author Sort descending | SearchLink |
|---|---|---|---|
| Emulsification liquid-liquid microextraction based on deep eutectic solvent: An extraction method for the determination of benzene, toluene, ethylbenzene and seven polycyclic aromatic hydrocarbons from water samples | 2015 | Department of Chemistry, Faculty of Science, Ilam University, Ilam 69315-516, Iran.; Department of Chemistry, Faculty of Science, Ilam University, Ilam 69315-516, Iran. Electronic address: daneshfara@yahoo.com.; Department of Chemistry, Faculty of Science | 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
18-Dec
Volume
1425
Issue
Start Page
25
Other Pages
33
Notes
CI: Copyright (c) 2015; JID: 9318488; 0 (Benzene Derivatives); 0 (Polycyclic Hydrocarbons, Aromatic); 0 (Solvents); 0 (Water Pollutants, Chemical); 059QF0KO0R (Water); 3FPU23BG52 (Toluene); J64922108F (Benzene); L5I45M5G0O (ethylbenzene); OTO: NOTNLM; 201
Place of Publication
Netherlands
ISSN/ISBN
1873-3778; 0021-9673
Accession Number
PMID: 26614169
Language
eng
SubFile
Journal Article; Research Support, Non-U.S. Gov't; IM
DOI
10.1016/j.chroma.2015.11.007 [doi]
Output Language
Unknown(0)
PMID
26614169
Abstract
In this study, for the first time, a simple, inexpensive and sensitive method named emulsification liquid-liquid microextraction based on deep eutectic solvent (ELLME-DES) was used for the extraction of benzene, toluene, ethylbenzene (BTE) and seven polycyclic aromatic hydrocarbons (PAHs) from water samples. In a typical experiment, 100muL of DES (as water-miscible extraction solvent) was added to 1.5mL of sample solution containing target analytes. A homogeneous solution was formed immediately. Injection of 100muL of THF (as emulsifier agent) into homogeneous solution provided a turbid state. After extraction, phase separation (aqueous phase/DES rich phase) was performed by centrifugation. DES rich phase was withdrawn by a micro-syringe and submitted to isocratic reverse-phase HPLC with UV detection. Under optimum conditions obtained by response surface methodology (RSM) and desirability function (DF), the calibration graphs were linear in the concentration range from 10 to 200mug/L for benzene, 10-400mug/L for toluene, 1-400mug/L for ethylbenzene, biphenyl, chrysene and fluorene, and 0.1-400mug/L for anthracene, benzo[a]pyrene, phenanthrene and pyrene. The coefficients of determination (r(2)) and limits of detection were 0.9924-0.9997 and 0.02-6.8mug/L, respectively. This procedure was successfully applied to the determination of target analytes in spiked water samples. The relative mean recoveries ranged from 93.1 to 103.3%.
Descriptors
Links
Book Title
Database
Publisher
Elsevier B.V
Data Source
Authors
Khezeli,T., Daneshfar,A., Sahraei,R.
Original/Translated Title
URL
Date of Electronic
20151110
PMCID
Editors
|
|||
| Indirectly suspended droplet microextraction of water-miscible organic solvents by salting-out effect for the determination of polycyclic aromatic hydrocarbons | 2014 | Department of Chemistry, Faculty of Science, Ilam University, Ilam, Iran. | Read more... |
|
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Environmental toxicology and chemistry / SETAC
Periodical, Abbrev.
Environ.Toxicol.Chem.
Pub Date Free Form
Dec
Volume
33
Issue
12
Start Page
2694
Other Pages
2701
Notes
CI: (c) 2014; JID: 8308958; 0 (Polycyclic Hydrocarbons, Aromatic); 0 (Solvents); 0 (Water Pollutants, Chemical); 059QF0KO0R (Water); 96F264O9SV (1-Propanol); SU46BAM238 (Ammonium Sulfate); OTO: NOTNLM; 2014/01/29 [received]; 2014/04/21 [revised]; 2014/09/
Place of Publication
United States
ISSN/ISBN
1552-8618; 0730-7268
Accession Number
PMID: 25242239
Language
eng
SubFile
Journal Article; IM
DOI
10.1002/etc.2753 [doi]
Output Language
Unknown(0)
PMID
25242239
Abstract
A simple and low-cost method that indirectly suspended droplet microextraction of water-miscible organic solvents (ISDME) by salting-out effect before high-performance liquid chromatography and ultraviolet (HPLC-UV) detection was used for the determination of polycyclic aromatic hydrocarbons (PAHs) in different samples. The ISDME is a combination of salting-out extraction of water-miscible organic solvent and directly suspended droplet microextraction (DSDME). Ninety-five microliters water-miscible organic solvent (1-propanol) was added to a 500-microL sample. A homogeneous solution was formed immediately. To produce a steady vortex at the top of the solution, the sample was agitated at 700 rpm using a magnetic stirrer. By the addition of ammonium sulfate (saturated solution) to the homogeneous solution, 1-propanol was separated and collected at the bottom of the steady vortex. Finally, 20 microL 1-propanol was injected into HPLC-UV. The effects of important parameters such as water-miscible organic solvent (type and volume), type of salt, and extraction time were evaluated. Under optimum conditions, the method has a good linear calibration range (0.1 microg/L-300 microg/L), coefficients of determination (R(2) > 0.998), low limits of detection (between 0.02 microg/L and 0.27 microg/L), and acceptable recovery (>85.0%).
Descriptors
Links
Book Title
Database
Publisher
SETAC
Data Source
Authors
Daneshfar,A., Khezeli,T.
Original/Translated Title
URL
Date of Electronic
20141029
PMCID
Editors
|
|||
| Comparison of ultrasound-assisted emulsification and dispersive liquid-liquid microextraction methods for the speciation of inorganic selenium in environmental water samples using low density extraction solvents | 2012 | Department of Chemistry, Faculty of Science, Shahid Beheshti University, Tehran, Iran. n-najafi@sbu.ac.ir | Read more... |
|
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Analytica Chimica Acta
Periodical, Abbrev.
Anal.Chim.Acta
Pub Date Free Form
10-Feb
Volume
714
Issue
Start Page
82
Other Pages
88
Notes
LR: 20131121; CI: Copyright (c) 2011; JID: 0370534; 0 (Azoles); 0 (Emulsions); 0 (Organoselenium Compounds); 0 (Phenylenediamines); 0 (Selenium Compounds); 0 (Solvents); 0 (Water Pollutants, Chemical); 059QF0KO0R (Water); 273-15-4 (piaselenole); 5A9AX7Y0T
Place of Publication
Netherlands
ISSN/ISBN
1873-4324; 0003-2670
Accession Number
PMID: 22244140
Language
eng
SubFile
Comparative Study; Journal Article; IM
DOI
10.1016/j.aca.2011.11.063 [doi]
Output Language
Unknown(0)
PMID
22244140
Abstract
Herein, ultrasound-assisted emulsification microextraction (USAEME) and dispersive liquid-liquid microextraction (DLLME) methods based on applying low-density organic solvents have been critically compared for the speciation of inorganic selenium, Se(IV) (selenite) and Se(VI) (selenate) in environmental water samples by gas chromatography-flame ionization detection (GC-FID). At pH 2 and T=75 degrees C for 7 min, only Se(IV) was able to form the piazselenol complex with 4-nitro-o-phenylenediamine. Piazselenol was extracted using an extraction solvent and was injected into a GC-FID instrument for the determination of Se(IV). Conveniently, Se(VI) remained in the aqueous phase. Total inorganic selenium was determined after the reduction of Se(VI) to Se(IV) and prior to the above procedures. The Se(VI) concentration was calculated as the difference between the measured total inorganic selenium and Se(IV) content. The effect of various experimental parameters on the efficiencies of the two methods and their optimum values were studied with the aid of response surface methodology and experimental design. Under the optimal conditions, the limit of detections (LODs) for Se(IV) obtained by USAEME-GC-FID and DLLME-GC-FID were 0.05 and 0.11 ng mL(-1), respectively. The relative standard deviations (RSDs, n=6) for the measurement 10 ng mL(-1) of Se(IV) were 5.32% and 4.57% with the enrichment factors of 2491 and 1129 for USAEME-GC-FID and DLLME-GC-FID, respectively. Both methods were successfully applied to the analysis of inorganic selenium in different environmental water samples and certified reference material (NIST SRM 1643e).
Descriptors
Links
Book Title
Database
Publisher
Elsevier B.V
Data Source
Authors
Najafi,N.M., Tavakoli,H., Abdollahzadeh,Y., Alizadeh,R.
Original/Translated Title
URL
Date of Electronic
20111208
PMCID
Editors
|
|||
| Determination of polycyclic aromatic hydrocarbons in fresh milk by hollow fiber liquid-phase microextraction-gas chromatography mass spectrometry | 2013 | Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, 81310 Johor Bahru, Johor, Malaysia. marsin@kimia.fs.utm.my | Read more... |
|
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Journal of chromatographic science
Periodical, Abbrev.
J.Chromatogr.Sci.
Pub Date Free Form
Feb
Volume
51
Issue
2
Start Page
112
Other Pages
116
Notes
JID: 0173225; 0 (Environmental Pollutants); 0 (Polycyclic Hydrocarbons, Aromatic); 2012/07/09 [aheadofprint]; ppublish
Place of Publication
United States
ISSN/ISBN
1945-239X; 0021-9665
Accession Number
PMID: 22776739
Language
eng
SubFile
Journal Article; Research Support, Non-U.S. Gov't; IM
DOI
10.1093/chromsci/bms113 [doi]
Output Language
Unknown(0)
PMID
22776739
Abstract
In this work, a two-phase hollow fiber liquid-phase microextraction (HF-LPME) method combined with gas chromatography-mass spectrometry (GC-MS) is developed to provide a rapid, selective and sensitive analytical method to determine polycyclic aromatic hydrocarbons (PAHs) in fresh milk. The standard addition method is used to construct calibration curves and to determine the residue levels for the target analytes, fluorene, phenanthrene, fluoranthene, pyrene and benzo[a]pyrene, thus eliminating sample pre-treatment steps such as pH adjustment. The HF-LPME method shows dynamic linearity from 5 to 500 microg/L for all target analytes with R(2) ranging from 0.9978 to 0.9999. Under optimized conditions, the established detection limits range from 0.07 to 1.4 microg/L based on a signal-to-noise ratio of 3:1. Average relative recoveries for the determination of PAHs studied at 100 microg/L spiking levels are in the range of 85 to 110%. The relative recoveries are slightly higher than those obtained by conventional solvent extraction, which requires saponification steps for fluorene and phenanthrene, which are more volatile and heat sensitive. The HF-LPME method proves to be simple and rapid, and requires minimal amounts of organic solvent that supports green analysis.
Descriptors
Links
Book Title
Database
Publisher
Data Source
Authors
Sanagi,M.M., Loh,S.H., Wan Ibrahim,W.A., Hasan,M.N., Aboul Enein,H.Y.
Original/Translated Title
URL
Date of Electronic
20120709
PMCID
Editors
|
|||
| Solvent-impregnated agarose gel liquid phase microextraction of polycyclic aromatic hydrocarbons in water | 2013 | Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia. | 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
9-Aug
Volume
1302
Issue
Start Page
14
Other Pages
19
Notes
LR: 20131121; CI: Copyright (c) 2013; JID: 9318488; 0 (Polycyclic Hydrocarbons, Aromatic); 059QF0KO0R (Water); 9012-36-6 (Sepharose); OTO: NOTNLM; 2013/01/02 [received]; 2013/06/01 [revised]; 2013/06/03 [accepted]; 2013/06/14 [aheadofprint]; ppublish
Place of Publication
Netherlands
ISSN/ISBN
1873-3778; 0021-9673
Accession Number
PMID: 23809804
Language
eng
SubFile
Journal Article; Research Support, Non-U.S. Gov't; IM
DOI
10.1016/j.chroma.2013.06.010 [doi]
Output Language
Unknown(0)
PMID
23809804
Abstract
A new microextraction procedure termed agarose gel liquid phase microextraction (AG-LPME) combined with gas chromatography-mass spectrometry (GC-MS) was developed for the determination of selected polycyclic aromatic hydrocarbons (PAHs) in water. The technique utilized an agarose gel disc impregnated with the acceptor phase (1-octanol). The extraction procedure was performed by allowing the solvent-impregnated agarose gel disc to tumble freely in the stirred sample solution. After extraction, the agarose gel disc was removed and subjected to centrifugation to disrupt its framework and to release the impregnated solvent, which was subsequently withdrawn and injected into the GC-MS for analysis. Under optimized extraction conditions, the new method offered high enrichment factors (89-177), trace level LODs (9-14ngL(-1)) and efficient extraction with good relative recoveries in the range of 93.3-108.2% for spiked drinking water samples. AG-LPME did not exhibit any problems related to solvent dissolution, and it provided high extraction efficiencies that were comparable to those of hollow fiber liquid phase microextraction (HF-LPME) and significantly higher than those of agarose film liquid phase microextraction (AF-LPME). This technique employed a microextraction format and utilized an environmentally compatible solvent holder that supported the green chemistry concept.
Descriptors
Links
Book Title
Database
Publisher
Elsevier B.V
Data Source
Authors
Loh,S.H., Sanagi,M.M., Wan Ibrahim,W.A., Hasan,M.N.
Original/Translated Title
URL
Date of Electronic
20130614
PMCID
Editors
|
|||
| Polythiophene/hexagonally ordered silica nanocomposite coating as a solid-phase microextraction fiber for the determination of polycyclic aromatic hydrocarbons in water | 2014 | Department of Chemistry, Faculty of Science, University of Maragheh, Maragheh, Iran. | Read more... |
|
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Journal of separation science
Periodical, Abbrev.
J.Sep.Sci.
Pub Date Free Form
Jan
Volume
37
Issue
2-Jan
Start Page
120
Other Pages
126
Notes
CI: (c) 2013; JID: 101088554; 0 (Polycyclic Hydrocarbons, Aromatic); 0 (Water Pollutants, Chemical); 7631-86-9 (Silicon Dioxide); OTO: NOTNLM; 2013/08/23 [received]; 2013/11/02 [revised]; 2013/11/03 [accepted]; 2013/12/12 [aheadofprint]; ppublish
Place of Publication
Germany
ISSN/ISBN
1615-9314; 1615-9306
Accession Number
PMID: 24243551
Language
eng
SubFile
Evaluation Studies; Journal Article; IM
DOI
10.1002/jssc.201300937 [doi]
Output Language
Unknown(0)
PMID
24243551
Abstract
A highly porous fiber coated with polythiophene/hexagonally ordered silica nanocomposite was prepared for solid-phase microextraction (SPME). The prepared nanomaterial was immobilized onto a stainless-steel wire for the fabrication of the SPME fiber. Polythiophene/hexagonally ordered silica nanocomposite fibers were used for the extraction of some polycyclic aromatic hydrocarbons from water samples. The extracted analytes were transferred to the injection port of a gas chromatograph using a laboratory-designed SPME device. The results obtained prove the ability of the polythiophene/hexagonally ordered silica material as a new fiber for the sampling of organic compounds from water samples. This behavior is due most probably to the increased surface area of the polythiophene/hexagonally ordered silica nanocomposite. A one-at-a-time optimization strategy was applied for optimizing the important extraction parameters such as extraction temperature, extraction time, ionic strength, stirring rate, and desorption temperature and time. Under the optimum conditions, the LOD of the proposed method is 0.1-3 pg/mL for analysis of polycyclic aromatic hydrocarbons from aqueous samples, and the calibration graphs were linear in a concentration range of 0.001-20 ng/mL (R(2) > 0.990) for most of the polycyclic aromatic hydrocarbons. The single fiber repeatability and fiber-to-fiber reproducibility were less than 8.6 and 19.1% (n = 5), respectively.
Descriptors
Links
Book Title
Database
Publisher
WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Data Source
Authors
Abolghasemi,M.M., Yousefi,V.
Original/Translated Title
URL
Date of Electronic
20131212
PMCID
Editors
|
|||
| Chemometric-based determination of polycyclic aromatic hydrocarbons in aqueous samples using ultrasound-assisted emulsification microextraction combined to gas chromatography-mass spectrometry | 2015 | Department of Chemistry, Faculty of Science, University of Tehran, Tehran, Iran.; Department of Chemistry, Faculty of Science, University of Tehran, Tehran, Iran. Electronic address: sereshti@ut.ac.ir.; Department of Chemistry, Sharif University of Techno | 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
25-Sep
Volume
1413
Issue
Start Page
117
Other Pages
126
Notes
CI: Copyright (c) 2015; JID: 9318488; 0 (Polycyclic Hydrocarbons, Aromatic); 0 (Water Pollutants, Chemical); 059QF0KO0R (Water); OTO: NOTNLM; 2015/06/17 [received]; 2015/08/09 [revised]; 2015/08/12 [accepted]; 2015/08/15 [aheadofprint]; ppublish
Place of Publication
Netherlands
ISSN/ISBN
1873-3778; 0021-9673
Accession Number
PMID: 26319375
Language
eng
SubFile
Journal Article; IM
DOI
10.1016/j.chroma.2015.08.026 [doi]
Output Language
Unknown(0)
PMID
26319375
Abstract
In the present research, ultrasonic-assisted emulsification-microextraction (USAEME) coupled with gas chromatography-mass spectrometry (GC-MS) has been proposed for analysis of thirteen environmental protection agency (EPA) polycyclic aromatic hydrocarbons (PAHs) in aqueous samples. Tetrachloroethylene was selected as extraction solvent. The main parameters of USAEME affecting the efficiency of the method were modeled and optimized using a central composite design (CCD). Under the optimum conditions (9muL for extraction solvent, 1.15% (w/v) NaCl (salt concentration) and 10min for ultrasonication time), preconcentration factor (PF) of the PAHs was in the range of 500-950. In order to have a comprehensive analysis, multivariate curve resolution-alternating least squares (MCR-ALS) as a second-order calibration algorithm was used for resolution, identification and quantification of the target PAHs in the presence of uncalibrated interferences. The regression coefficients and relative errors (REs, %) of calibration curves of the PAHs were in the satisfactory range of 0.9971-0.9999 and 1.17-6.59%, respectively. Furthermore, analytical figures of merit (AFOM) for univariate and second-order calibrations were obtained and compared. As an instance, the limit of detections (LODs) of target PAHs were in the range of 1.87-18.9 and 0.89-6.49ngmL(-1) for univariate and second-order calibration, respectively. Finally, the proposed strategy was used for determination of target PAHs in real water samples (tap and hookah waters). The relative recoveries (RR) and the relative standard deviations (RSDs) were 68.4-109.80% and 2.15-6.93%, respectively. It was concluded that combination of multivariate chemometric methods with USAEME-GC-MS can be considered as a new insight for the analysis of target analytes in complex sample matrices.
Descriptors
Links
Book Title
Database
Publisher
Elsevier B.V
Data Source
Authors
Ahmadvand,M., Sereshti,H., Parastar,H.
Original/Translated Title
URL
Date of Electronic
20150815
PMCID
Editors
|
|||
| Environmental monitoring of complex hydrocarbon mixtures in water and soil samples after solid phase microextraction using PVC/MWCNTs nanocomposite fiber | 2013 | Department of Chemistry, Faculty of Sciences, Azarbijan Shahid Madani University, 53714-161 Tabriz, Iran. Electronic address: matinchem@gmail.com. | Read more... |
|
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Chemosphere
Periodical, Abbrev.
Chemosphere
Pub Date Free Form
Nov
Volume
93
Issue
9
Start Page
1920
Other Pages
1926
Notes
CI: Copyright (c) 2013; JID: 0320657; 0 (Nanotubes, Carbon); 0 (Polycyclic Hydrocarbons, Aromatic); 0 (Soil); 0 (Soil Pollutants); 0 (Water Pollutants, Chemical); 9002-86-2 (Polyvinyl Chloride); OTO: NOTNLM; 2012/12/04 [received]; 2013/06/22 [revised]; 20
Place of Publication
England
ISSN/ISBN
1879-1298; 0045-6535
Accession Number
PMID: 23906812
Language
eng
SubFile
Journal Article; IM
DOI
10.1016/j.chemosphere.2013.06.072 [doi]
Output Language
Unknown(0)
PMID
23906812
Abstract
A novel nanocomposite based on incorporation of multiwalled carbon nanotubes (MWCNTs) in polyvinyl chloride (PVC) was prepared. Proposed nanocomposite was coated on stainless steel wire by deep coating. Composition of nanocomposite was optimized based on results of morphological studies using scanning electron microscopy. The best composition (83% MWCNTs:17% PVC) was applied as a solid phase microextraction fiber. Complex mixture of aromatic (BTEX) and aliphatic hydrocarbons (C5-C34) were selected as model analytes, and performance of proposed fiber in extraction of the studied compounds from water and soil samples was evaluated. Analytical merits of the method for water samples (LODs=0.10-1.10 ng L(-1), r(2)=0.9940-0.9994) and for soil samples (LODs=0.10-0.77 ng kg(-1), r(2)=0.9946-0.9994) showed excellent characteristics of it in ultra trace determination of petroleum type environmental pollutants. Finally, the method was used for determination of target analytes in river water, industrial effluent and soil samples.
Descriptors
Links
Book Title
Database
Publisher
Elsevier Ltd
Data Source
Authors
Matin,A.A., Biparva,P., Gheshlaghi,M., Farhadi,K., Gheshlaghi,A.
Original/Translated Title
URL
Date of Electronic
20130729
PMCID
Editors
|
|||
| Gas chromatographic determination of polycyclic aromatic hydrocarbons in water and smoked rice samples after solid-phase microextraction using multiwalled carbon nanotube loaded hollow fiber | 2014 | Department of Chemistry, Faculty of Sciences, Azarbijan Shahid Madani University, 53714-161 Tabriz, Iran. Electronic address: matinchem@gmail.com.; Department of Basic Sciences, Sari Agricultural Sciences and Natural Resources University, Sari, Iran. Elec | 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
29-Dec
Volume
1374
Issue
Start Page
50
Other Pages
57
Notes
LR: 20151119; CI: Copyright (c) 2014; JID: 9318488; 0 (Nanotubes, Carbon); 0 (Polycyclic Hydrocarbons, Aromatic); 0 (Smoke); 059QF0KO0R (Water); OTO: NOTNLM; 2014/04/19 [received]; 2014/11/14 [revised]; 2014/11/17 [accepted]; 2014/11/26 [aheadofprint]; pp
Place of Publication
Netherlands
ISSN/ISBN
1873-3778; 0021-9673
Accession Number
PMID: 25476686
Language
eng
SubFile
Journal Article; IM
DOI
10.1016/j.chroma.2014.11.048 [doi]
Output Language
Unknown(0)
PMID
25476686
Abstract
A novel solid-phase microextraction fiber was prepared based on multiwalled carbon nanotubes (MWCNTs) loaded on hollow fiber membrane pores. Stainless steel wire was used as unbreakable support. The major advantages of the proposed fiber are its (a) high reproducibility due to the uniform structure of the hollow fiber membranes, (b) high extraction capacity related to the porous structure of the hollow fiber and outstanding adsorptive characteristics of MWCNTs. The proposed fiber was applied for the microextraction of five representative polycyclic aromatic hydrocarbons (PAHs) from aqueous media (river and hubble-bubble water) and smoked rice samples followed by gas chromatographic determination. Analytical merits of the method, including high correlation coefficients [(0.9963-0.9992) and (0.9982-0.9999)] and low detection limits [(9.0-13.0ngL(-1)) and (40.0-150.0ngkg(-1))] for water and rice samples, respectively, made the proposed method suitable for the ultra-trace determination of PAHs.
Descriptors
Links
Book Title
Database
Publisher
Elsevier B.V
Data Source
Authors
Matin,A.A., Biparva,P., Gheshlaghi,M.
Original/Translated Title
URL
Date of Electronic
20141126
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
|
|||