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WTS Database
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 Sort ascending | Author | SearchLink |
|---|---|---|---|
| Solid-phase extraction combined with large volume injection-programmable temperature vaporization-gas chromatography-mass spectrometry for the multiresidue determination of priority and emerging organic pollutants in wastewater | 2012 | Department of Analytical Chemistry, Faculty of Science and Technology, University of the Basque Country-UPV/EHU, PK 644, 48080 Bilbao, Spain. | Read more... |
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Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Journal of chromatography.A
Periodical, Abbrev.
J.Chromatogr.A
Pub Date Free Form
20-Jul
Volume
1247
Issue
Start Page
104
Other Pages
117
Notes
CI: Copyright (c) 2012; JID: 9318488; 0 (Organic Chemicals); 0 (Water Pollutants, Chemical); 2012/02/27 [received]; 2012/04/16 [revised]; 2012/05/06 [accepted]; 2012/05/14 [aheadofprint]; ppublish
Place of Publication
Netherlands
ISSN/ISBN
1873-3778; 0021-9673
Accession Number
PMID: 22673809
Language
eng
SubFile
Journal Article; Research Support, Non-U.S. Gov't; IM
DOI
10.1016/j.chroma.2012.05.022 [doi]
Output Language
Unknown(0)
PMID
22673809
Abstract
In the present work the simultaneous extraction for the multiresidue determination in wastewater samples of organic compounds such as polychlorinated biphenyls (PCBs), polybrominated biphenyls (PBBs), pesticides, polycyclic aromatic hydrocarbons (PAHs), phthalate esters (PEs), alkylphenols (APs), bisphenol A (BPA) or hormones included in different lists of priority and emerging pollutants because of their action as endocrine disrupting compounds (EDCs) was developed. Different solid phase extraction (SPE) variables such as the nature of the solid phase (Oasis-HLC, C18 and Lichrolut), the sample volume, the addition of MeOH and NaCl, the pH of the water phase and the volume of the eluent solvent were optimized in order to analyze simultaneously the priority and emerging families of pollutants mentioned above. Good recoveries were obtained for Milli-Q water (80-120%), however, since the use of deuterated analogues and dilution of the sample did not correct the matrix effect, additional SPE clean-up step using Florisil(R) cartridges was necessary to obtain good results for wastewater samples (80-125%). In order to improve the limits of detection (LODs), large volume injection (LVI) using programmable temperature vaporizer (PTV) coupled to gas chromatography-mass spectrometry (GC-MS) was also optimized. Since analytes losses in the case of the most volatile congeners occurred during the derivatization step and no separation of the derivatized and the non-derivatized analytes was possible during SPE elution, two different injections were optimized for each analyte group. LODs were in good agreement with those found in the literature and relative standard deviations (RSDs) were in the 10-25% range for Milli-Q and 12-30% for wastewater samples. The method was finally applied to the determination of target analytes in three different wastewater treatment plants (WWTPs, Bakio, Gernika and Galindo (Spain)) and in one water purification plant (WPP) in Zornotza (Spain).
Descriptors
Links
Book Title
Database
Publisher
Elsevier B.V
Data Source
Authors
Bizkarguenaga,E., Ros,O., Iparraguirre,A., Navarro,P., Vallejo,A., Usobiaga,A., Zuloaga,O.
Original/Translated Title
URL
Date of Electronic
20120514
PMCID
Editors
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| Genetic characterisation of extended-spectrum beta-lactamases in Escherichia coli isolated from retail chicken products including CTX-M-9 containing isolates: a food safety risk factor | 2012 | Centre of Studies of Animal and Veterinary Sciences, Vila Real, Portugal. | Read more... |
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Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
British poultry science
Periodical, Abbrev.
Br.Poult.Sci.
Pub Date Free Form
Volume
53
Issue
6
Start Page
747
Other Pages
755
Notes
JID: 15740290R; 0 (Escherichia coli Proteins); 0 (beta-Lactams); EC 3.5.2.- (CTX-M-9 protein, E coli); EC 3.5.2.6 (beta-Lactamases); ppublish
Place of Publication
England
ISSN/ISBN
1466-1799; 0007-1668
Accession Number
PMID: 23398418
Language
eng
SubFile
Journal Article; Research Support, Non-U.S. Gov't; IM
DOI
10.1080/00071668.2012.740554 [doi]
Output Language
Unknown(0)
PMID
23398418
Abstract
1. Bacterial resistance to beta-lactam antibiotics has risen dramatically in Escherichia coli from food animals. In a previous study, 29 randomly selected chicken products, collected in Portugal, were analysed for the presence of extended-spectrum beta-lactamases (ESBLs)-producing E. coli; and during this study the genetic characterisation of ESBLs genes was investigated. 2. The presence of genes encoding TEM, OXA, SHV, and CTX-M type beta-lactamases was studied by PCR followed by sequencing. Additionally, other mechanisms of antimicrobial resistance, phylogenetic groups and the presence of virulence determinants were evaluated among the isolates. 3. beta-lactamases genes were identified as follows: bla (CTX-M-14) (n = 4), bla (CTX-M-1) (n = 2), bla (CTX-M-9) (n = 4) and bla (TEM-52) (n = 13). Mutations at positions -42, -18, -1, and +58 of ampC promoter region were identified in 4 non-ESBL-producing isolates. The tet(A) or tet(B) genes were identified in all tetracycline-resistant isolates; the aadA gene detected in 8 of 10 streptomycin-resistant isolates; the aac(3)-II gene in all gentamicin-resistant isolates; the cmlA gene in the chloramphenicol-resistant isolate; and sul1 and/or sul2 and/or sul3 genes were found in all trimethoprim-sulfamethoxazole-resistant isolates. The intI1 gene was detected in 8 trimethoprim-sulfamethoxazole-resistant isolates and the intI2 gene in 4 isolates; one gene cassette arrangements were identified among class 1 integrons (dfrA1 + aadA1) and among the class 2 integrons (dfrA1 + sat2 + aadA1). Among cefotaxime-resistant isolates, 16 belonged to A or B1 phylogenetic groups, while 11 isolates were classified into the D or B2 phylogroups. At least one virulence-associated gene (aer, fimA, or papC) was detected in 74.1% of the cefotaxime-resistant isolates. 4. Because ESBLs-producing bacteria are resistant to a broad range of beta-lactams, infections caused by these organisms complicate therapy and limit treatment options.
Descriptors
Links
Book Title
Database
Publisher
Data Source
Authors
Silva,N., Costa,L., Goncalves,A., Sousa,M., Radhouani,H., Brito,F., Igrejas,G., Poeta,P.
Original/Translated Title
URL
Date of Electronic
PMCID
Editors
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| Determination of ten monohydroxylated polycyclic aromatic hydrocarbons by liquid-liquid extraction and liquid chromatography/tandem mass spectrometry | 2012 | Key Laboratory of Ecology and Environmental Science in Guangdong Higher Education, School of Life Science, South China Normal University, Guangzhou 510631, China. | Read more... |
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Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Talanta
Periodical, Abbrev.
Talanta
Pub Date Free Form
15-May
Volume
93
Issue
Start Page
383
Other Pages
391
Notes
CI: Published by Elsevier B.V.; GR: 1U38DD000481-01/DD/NCBDD CDC HHS/United States; JID: 2984816R; 0 (Polycyclic Hydrocarbons, Aromatic); 2012/01/27 [received]; 2012/02/17 [revised]; 2012/02/22 [accepted]; 2012/03/01 [aheadofprint]; ppublish
Place of Publication
Netherlands
ISSN/ISBN
1873-3573; 0039-9140
Accession Number
PMID: 22483926
Language
eng
SubFile
Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't; IM
DOI
10.1016/j.talanta.2012.02.059 [doi]
Output Language
Unknown(0)
PMID
22483926
Abstract
The aim of this study is to develop and validate an analytical method for the quantitation of ten urinary monohydroxylated polycyclic aromatic hydrocarbons (OH-PAHs) through high pressure liquid chromatography/tandem mass spectrometry (HPLC/MS/MS). After enzymatic deconjugation, urine samples were extracted by liquid-liquid extraction (LLE) and OH-PAHs were analyzed by HPLC/MS/MS operated in negative electrospray ionization (ESI) and multiple reaction monitoring (MRM) mode. LLE was conducted with the solvent mixture of pentane and toluene, which reduced the matrix interferences and enhanced the method sensitivity significantly. Deuterated and (13)C-labeled analogs are used as internal standards. Calibration curves of all target analytes shows favorable linearity within the concentration range of 5.9-15,000.0 ng/L for different OH-PAHs with the regression coefficients above 0.993. The limits of detection (LODs) in pooled urine ranged from 1.72 to 17.47 ng/L, which were much lower than those obtained by a gas chromatography/high resolution mass spectrometry (GC/HRMS) method. The method shows satisfactory accuracy and precision when analyzing three different levels of OH-PAHs spiked in pooled urine. Except for 1-hydroxynaphthalene, recoveries of other OH-PAHs were in the range of 100 +/- 20% with a variation coefficient of less than 13%. The measurement of OH-PAHs from a QC sample of the Centers for Disease Control and Prevention (CDC) generated results close to the values measured by CDC. This method has been successfully employed in the California Biomonitoring Program.
Descriptors
Links
Book Title
Database
Publisher
Data Source
Authors
Fan,R., Ramage,R., Wang,D., Zhou,J., She,J.
Original/Translated Title
URL
Date of Electronic
20120301
PMCID
Editors
|
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| A cross-sectional study on the relationship between behavioral variables and economic status in periodontal disease among elderly individuals | 2012 | Department of Periodontics, KGF Dental College and Hospital, Bengaluru, Karnataka, India. drprasannar@gmail.com | Read more... |
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Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
The journal of contemporary dental practice
Periodical, Abbrev.
J.Contemp.Dent.Pract.
Pub Date Free Form
1-Sep
Volume
13
Issue
5
Start Page
699
Other Pages
702
Notes
JID: 101090552; epublish
Place of Publication
India
ISSN/ISBN
1526-3711; 1526-3711
Accession Number
PMID: 23250178
Language
eng
SubFile
Comparative Study; Journal Article; D; IM
DOI
1526-3711-949 [pii]
Output Language
Unknown(0)
PMID
23250178
Abstract
OBJECTIVES: The objectives of this study were to examine the relationship between behavioral variables, such as smoking and level of income on the periodontal disease among older South Indian adults. MATERIALS AND METHODS: Data pertaining to participants aged 55 years and above from the Outpatient Department of MR Ambedkar Dental College and Hospital were used. A total of 209 elderly subjects were selected by convenient sampling and a complete evaluation of their periodontal status was carried out. RESULTS: Our study showed that patients belonging to the lower income group and smokers had more severe disease compared to other groups. They were found to have higher plaque scores, higher calculus scores, deeper pockets and attachment loss compared to the subjects of the other groups. CONCLUSION: Variables, such as smoking, gender and low income are associated with the severity of periodontal disease in older adults.
Descriptors
Links
Book Title
Database
Publisher
Data Source
Authors
Prasanna,H.R., Chandan,D.N., Kripal,K., Hari,K.R., Adarsh,C.M., Reddy,T.P.
Original/Translated Title
URL
Date of Electronic
20120901
PMCID
Editors
|
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| Diethyl 2,6-dihy-droxy-4-(3-nitro-phen-yl)-2,6-bis-(trifluoro-meth-yl)piperidine-3,5-dica rboxyl-ate | 2012 | Read more... | |
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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-Feb
Volume
68
Issue
Pt 2
Start Page
o400
Other Pages
1
Notes
JID: 101089178; OID: NLM: PMC3275076; 2011/12/16 [received]; 2011/12/23 [accepted]; 2012/01/14 [epublish]; ppublish
Place of Publication
United States
ISSN/ISBN
1600-5368; 1600-5368
Accession Number
PMID: 22347021
Language
eng
SubFile
Journal Article
DOI
10.1107/S1600536811055346 [doi]
Output Language
Unknown(0)
PMID
22347021
Abstract
In the title compound, C(19)H(20)F(6)N(2)O(8), the eth-oxy and ethyl groups are disordered over two sets of sites, with occupancy ratios of 0.212 (18):0.788 (18) and 0.746 (6):0.254 (6), respectively. The piperidine ring adopts a chair conformation. In the mol-ecule, intra-molecular O-Hcdots, three dots, centeredO hydrogen bonds form two S(6) ring motifs. In the crystal, mol-ecules are linked via O-Hcdots, three dots, centeredO and C-Hcdots, three dots, centeredO hydrogen bonds, forming dimers.
Descriptors
Links
Book Title
Database
Publisher
Data Source
Authors
Fun,H.K., Arshad,S., Reddy,B.P., Vijayakumar,V., Sarveswari,S.
Original/Translated Title
URL
Date of Electronic
20120114
PMCID
PMC3275076
Editors
|
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| Is self interdental cleaning associated with dental plaque levels, dental calculus, gingivitis and periodontal disease? | 2012 | Australian Research Centre for Population Oral Health, School of Dentistry, The University of Adelaide, Adelaide, South Australia, Australia. leonard.crocombe@adelaide.edu.au | Read more... |
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Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Journal of periodontal research
Periodical, Abbrev.
J.Periodontal.Res.
Pub Date Free Form
Apr
Volume
47
Issue
2
Start Page
188
Other Pages
197
Notes
CI: (c) 2011; JID: 0055107; 0 (Chewing Gum); 0 (Mouthwashes); 2011/09/28 [aheadofprint]; ppublish
Place of Publication
Denmark
ISSN/ISBN
1600-0765; 0022-3484
Accession Number
PMID: 21954940
Language
eng
SubFile
Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, P.H.S.; D; IM
DOI
10.1111/j.1600-0765.2011.01420.x [doi]
Output Language
Unknown(0)
PMID
21954940
Abstract
BACKGROUND AND OBJECTIVE: To ascertain whether interdental cleaning behaviours of Australian adults were associated with lower levels of plaque, gingivitis and periodontal disease. MATERIAL AND METHODS: Data were obtained from the National Survey of Adult Oral Health 2004-06. Outcome variables were three indicators of oral hygiene outcomes (the presence or not of dental plaque, dental calculus and gingivitis) and two of periodontal disease (the presence or not of at least one tooth with a periodontal pocket or clinical attachment loss of >/= 4 mm). The independent variable was classified into the following three groups: regularly clean interproximally 'at least daily' (daily+); 'less than daily' (
Descriptors
Links
Book Title
Database
Publisher
John Wiley & Sons A/S
Data Source
Authors
Crocombe,L.A., Brennan,D.S., Slade,G.D., Loc,D.O.
Original/Translated Title
URL
Date of Electronic
20110928
PMCID
Editors
|
|||
| Distribution of COPD-related symptoms in the Middle East and North Africa: results of the BREATHE study | 2012 | Ain Shams University, Cairo, Egypt. | Read more... |
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Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Respiratory medicine
Periodical, Abbrev.
Respir.Med.
Pub Date Free Form
Dec
Volume
106 Suppl 2
Issue
Start Page
S25
Other Pages
32
Notes
CI: Copyright (c) 2012; JID: 8908438; ppublish
Place of Publication
England
ISSN/ISBN
1532-3064; 0954-6111
Accession Number
PMID: 23290701
Language
eng
SubFile
Journal Article; Multicenter Study; IM
DOI
10.1016/S0954-6111(12)70012-4 [doi]
Output Language
Unknown(0)
PMID
23290701
Abstract
Chronic obstructive pulmonary disease (COPD) is a major cause of morbidity and mortality worldwide. However, its epidemiology in many developing countries is poorly characterised. The objective of this analysis was to evaluate respiratory symptoms which could be COPD-related in a large sample of individuals aged >/= 40 years in ten countries in the Middle East and North Africa (Algeria, Egypt, Jordan, Lebanon, Morocco, Saudi Arabia, Syria, Tunisia, Turkey and United Arab Emirates), together with Pakistan, using a standardised methodology. A random sample of 457,258 telephone numbers was contacted. A screening questionnaire was administered to each eligible participant, which included six questions relating to respiratory symptoms. Of 65,154 eligible subjects, 62,086 agreed to participate and 61,551 provided usable data. The age- and gender-adjusted prevalence of symptoms (persistent productive cough or breathlessness or both) was 14.3% [95% CI: 14.0-14.6%], ranging from 7.2% in UAE to 19.1% in Algeria. Symptoms were more frequent (p /= 10 pack . years) was 3.6% [95% CI: 3.5-3.7%] (range: 1.9% in UAE to 6.1% in Syria). COPD was more frequent (p
Descriptors
Links
Book Title
Database
Publisher
Elsevier Ltd
Data Source
Authors
Tageldin,M.A., Nafti,S., Khan,J.A., Nejjari,C., Beji,M., Mahboub,B., Obeidat,N.M., Uzaslan,E., Sayiner,A., Wali,S., Rashid,N., El Hasnaoui,A., BREATHE Study Group
Original/Translated Title
URL
Date of Electronic
PMCID
Editors
|
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| Prenatal and passive smoke exposure and incidence of asthma and wheeze: systematic review and meta-analysis | 2012 | Division of Epidemiology and Public Health, University of Nottingham, City Hospital, UK Centre for Tobacco Control Studies, Nottingham, UK. | Read more... |
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Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Pediatrics
Periodical, Abbrev.
Pediatrics
Pub Date Free Form
Apr
Volume
129
Issue
4
Start Page
735
Other Pages
744
Notes
LR: 20151119; GR: C1512/A11160/Cancer Research UK/United Kingdom; GR: British Heart Foundation/United Kingdom; GR: Department of Health/United Kingdom; JID: 0376422; 0 (Tobacco Smoke Pollution); 2012/03/19 [aheadofprint]; ppublish
Place of Publication
United States
ISSN/ISBN
1098-4275; 0031-4005
Accession Number
PMID: 22430451
Language
eng
SubFile
Journal Article; Meta-Analysis; Research Support, Non-U.S. Gov't; Review; AIM; IM
DOI
10.1542/peds.2011-2196 [doi]
Output Language
Unknown(0)
PMID
22430451
Abstract
OBJECTIVES: Exposure to passive smoke is a common and avoidable risk factor for wheeze and asthma in children. Substantial growth in the prospective cohort study evidence base provides an opportunity to generate new and more detailed estimates of the magnitude of the effect. A systematic review and meta-analysis was conducted to provide estimates of the prospective effect of smoking by parents or household members on the risk of wheeze and asthma at different stages of childhood. METHODS: We systematically searched Medline, Embase, and conference abstracts to identify cohort studies of the incidence of asthma or wheeze in relation to exposure to prenatal or postnatal maternal, paternal, or household smoking in subjects aged up to 18 years old. Pooled odds ratios (ORs) with 95% confidence intervals (CIs) were estimated by using random effects model. RESULTS: We identified 79 prospective studies. Exposure to pre- or postnatal passive smoke exposure was associated with a 30% to 70% increased risk of incident wheezing (strongest effect from postnatal maternal smoking on wheeze in children aged =2 years, OR = 1.70, 95% CI = 1.24-2.35, 4 studies) and a 21% to 85% increase in incident asthma (strongest effect from prenatal maternal smoking on asthma in children aged =2 years, OR = 1.85, 95% CI = 1.35-2.53, 5 studies). CONCLUSIONS: Building upon previous findings, exposure to passive smoking increases the incidence of wheeze and asthma in children and young people by at least 20%. Preventing parental smoking is crucially important to the prevention of asthma.
Descriptors
Links
Book Title
Database
Publisher
Data Source
Authors
Burke,H., Leonardi-Bee,J., Hashim,A., Pine-Abata,H., Chen,Y., Cook,D.G., Britton,J.R., McKeever,T.M.
Original/Translated Title
URL
Date of Electronic
20120319
PMCID
Editors
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| Hymenaea stigonocarpa Mart. ex Hayne: a Brazilian medicinal plant with gastric and duodenal anti-ulcer and antidiarrheal effects in experimental rodent models | 2012 | Univ. Estadual Paulista-UNESP - Departamento de Farmacologia, Instituto de Biociencias, CEP 18618-000, Botucatu, SP, Brazil. | Read more... |
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Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Journal of ethnopharmacology
Periodical, Abbrev.
J.Ethnopharmacol.
Pub Date Free Form
30-Aug
Volume
143
Issue
1
Start Page
81
Other Pages
90
Notes
LR: 20131121; CI: Copyright (c) 2012; JID: 7903310; 0 (Anti-Inflammatory Agents, Non-Steroidal); 0 (Anti-Ulcer Agents); 0 (Antidiarrheals); 0 (Flavonoids); 0 (Phenols); 0 (Plant Extracts); 0 (Tannins); 31C4KY9ESH (Nitric Oxide); 3K9958V90M (Ethanol); 5UX2
Place of Publication
Ireland
ISSN/ISBN
1872-7573; 0378-8741
Accession Number
PMID: 22750452
Language
eng
SubFile
Journal Article; Research Support, Non-U.S. Gov't; IM
DOI
10.1016/j.jep.2012.06.001 [doi]
Output Language
Unknown(0)
PMID
22750452
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE: Hymenaea stigonocarpa Mart. ex Hayne (Fabaceae) is a medicinal species commonly found in the Brazilian savannah. The stem bark of this medicinal plant, popularly known as "jatoba-do-cerrado", is widely used in tea form to treat gastric pain, ulcers, diarrhoea and inflammation, whereas its fruits pulp is edible. AIM OF THE STUDY: The aim of this study was to investigate the antidiarrheal and anti-ulcer effects of a methanolic extract derived from the stem bark (MHs) and diet with fruit pulp of H. stigonocarpa. MATERIALS AND METHODS: The antidiarrheal action of MHs was measured against the intestinal motility and diarrhoea induced by castor oil in mice. The preventive action of MHs (50, 100, 150 and 200mg/Kg, by oral route (p.o.)) against peptic ulcers was evaluated in experimental rodent models challenged with absolute ethanol, non-steroidal anti-inflammatory drugs (NSAIDs), ischemia-reperfusion (I/R) (200mg/Kg, p.o.) and cysteamine (200mg/Kg, p.o.). The main anti-ulcer mechanisms of action of MHs were analysed as follows: evaluation of the gastric juice parameters, assessment of mucus adherence to the gastric wall, determination of the role of nitric oxide (NO) and sulfhydryl compounds (SH), glutathione (GSH) levels and myeloperoxidase (MPO) activity. The healing effects from MHs (200mg/Kg) and diet with fruit pulp (10%) against gastric and duodenal ulcers induced by acetic acid were also evaluated by treating rats over 7 or 14 consecutive days of treatment. RESULTS: The phytochemical profile of MHs and fruit pulp indicated the presence of phenolic compounds (mainly flavonoids and condensed tannins). MHs (200mg/Kg, p.o.) displayed an antidiarrheal effect and were able to protect gastric mucosa against absolute ethanol (68% protection) and also against the injurious effect of NSAIDs (86% protection) when compared to the group treated with vehicle. These results were accompanied by the prevention of GSH depletion and an inhibition of MPO activity when compared to animals treated with vehicle (P
Descriptors
Links
Book Title
Database
Publisher
Elsevier Ireland Ltd
Data Source
Authors
Rodrigues Orsi,P., Bonamin,F., Aparecida Severi,J., Cassia Santos,R., Vilegas,W., Hiruma-Lima,C.A., Stasi,L.C.
Original/Translated Title
URL
Date of Electronic
20120627
PMCID
Editors
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| 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... |
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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
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