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Title	Pub Year	Author	SearchLink Sort descending
Comparison of Cotinine Salivary Levels in Hookah Smokers, Passive Smokers, and Non-Smokers	2015	Assistant Professor, Oral and Dental Disaese Research Center AND Department of Oral Medicine, School of Dentistry, Zahedan University of Medical Sciencse, Zahedan, Iran.; Associate Professor, Oral and Dental Research Center AND Department of Oral Medicine	Read more...
Source Type Print(0) Ref Type Journal Article Periodical, Full Addiction & health Periodical, Abbrev. Addict.Health. Pub Date Free Form Summer-Autumn Volume 7 Issue 4-Mar Start Page 184 Other Pages 191 Notes LR: 20160219; JID: 101582275; OID: NLM: PMC4741239; OTO: NOTNLM; ppublish Place of Publication Iran ISSN/ISBN 2008-4633; 2008-4633 Accession Number PMID: 26885355 Language eng SubFile Journal Article DOI Output Language Unknown(0) PMID 26885355 Abstract BACKGROUND: At present smoking is considered a great health-related problem. Smoking cigarettes and use of tobacco are on the rise in the Middle East countries; therefore, the number of people exposed to passive cigarette smoke is increasing, too. The aim of the present study was to determine and compare salivary cotinine levels in hookah smokers, individuals exposed to passive cigarette smoke and non-smoker (passive smokers). METHODS: In the present cross-sectional study, unstimulated salivary samples were collected from 150 subjects, including 50 hookah smokers, 50 passive smokers, and 50 non-smokers. Bioassay Technology Laboratory cotinine kit was used to determine salivary levels of cotinine using the enzyme-linked immunosorbent assay (ELISA) technique at a sensitivity rate of 0.019 pg/ml. Data were analyzed with SPSS software using t-test and Pearson's correlation coefficient. FINDINGS: The highest salivary cotinine levels were recorded in hookah users (20.24 +/- 5.62 ng/ml), followed by passive smokers (16.09 +/- 3.51 ng/ml), in descending order. No detectable cotinine levels were observed in non-smokers. Pearson's correlation coefficient showed a strong and positive correlation between use of hookah and salivary cotinine levels (r = 0.932, P = 0.001). CONCLUSION: Based on the results of the present study, salivary cotinine levels were higher in hookah smokers compared with passive smokers and non-smokers, in descending order. Descriptors Links Book Title Database Publisher Data Source Authors Nosratzehi,T., Arbabi-Kalati,F., Alijani,E., Tajdari,H. Original/Translated Title URL Date of Electronic PMCID PMC4741239 Editors
Correlation between tobacco control policies, consumption of rolled tobacco and e-cigarettes, and intention to quit conventional tobacco, in Europe	2017	Biostatistics Unit, Department of Basic Sciences, Universitat Internacional de Catalunya, Sant Cugat del Valles, Barcelona, Spain.; Biostatistics Unit, Department of Basic Sciences, Universitat Internacional de Catalunya, Sant Cugat del Valles, (TRUNCATED	Read more...
Source Type Print(0) Ref Type Journal Article Periodical, Full Tobacco control Periodical, Abbrev. Tob.Control Pub Date Free Form Mar Volume 26 Issue 2 Start Page 149 Other Pages 152 Notes LR: 20180216; CI: Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://www.bmj.com/company/products-services/rights-and-licensing/.; JID: 9209612; OTO: NOTNLM; 2015/05/25 00:0 Place of Publication England ISSN/ISBN 1468-3318; 0964-4563 Accession Number PMID: 26888824 Language eng SubFile Journal Article; Research Support, Non-U.S. Gov't; IM DOI 10.1136/tobaccocontrol-2015-052482 [doi] Output Language Unknown(0) PMID 26888824 Abstract OBJECTIVE: To analyse the correlation between the implementation of tobacco control policies and tobacco consumption, particularly rolling tobacco, electronic cigarettes (e-cigarettes) users and the intent to quit smoking in 27 countries of the European Union. DESIGN: Ecological study with the country as the unit of analysis. DATA SOURCES: We used the data from tobacco control activities, measured by the Tobacco Control Scale (TCS), in 27 European countries, in 2010, and the prevalence of tobacco consumption data from the Eurobarometer of 2012. ANALYSIS: Spearman correlation coefficients (rsp) and their 95% CIs. RESULTS: There was a negative correlation between TCS and prevalence of smoking (rsp=-0.41; 95% CI -0.67 to -0.07). We also found a negative correlation (rsp=-0.31) between TCS and the prevalence of ever e-cigarette users, but it was not statistically significant. Among former cigarette smokers, there was a positive and statistically significant correlation between TCS and the consumption of hand-rolled tobacco (rsp=0.46; 95% CI 0.06 to 0.70). We observed a similar correlation between TCS and other tobacco products (cigars and pipe) among former cigarette smokers. There was a significant positive correlation between TCS and intent to quit smoking in the past 12 months (rsp=0.66; 95% CI 0.36 to 0.87). CONCLUSIONS: The level of smoke-free legislation among European countries is correlated with a decrease in the prevalence of smoking of conventional cigarettes and an increase in the intent to quit smoking within the past 12 months. However, the consumption of other tobacco products, particularly hand-rolled tobacco, is positively correlated with TCS among former cigarette smokers. Therefore, tobacco control policies should also consider other tobacco products, such as rolling tobacco, cigars and pipes. Descriptors Links Book Title Database Publisher Data Source Authors Lidon-Moyano,C., Martin-Sanchez,J.C., Saliba,P., Graffelman,J., Martinez-Sanchez,J.M. Original/Translated Title URL Date of Electronic 20160217 PMCID Editors
Waterpipe Tobacco Smoking and Susceptibility to Cigarette Smoking Among Young Adults in the United States, 2012-2013	2016	Department of Health Outcomes and Policy, University of Florida College of Medicine, PO Box 100177, Gainesville, FL 32610. Email: rsalloum@ufl.edu.; Arnold School of Public Health, University of South Carolina, Columbia, South Carolina, and Jahangirnagar	Read more...
Source Type Print(0) Ref Type Journal Article Periodical, Full Preventing chronic disease Periodical, Abbrev. Prev.Chronic Dis. Pub Date Free Form 18-Feb Volume 13 Issue Start Page E24 Other Pages Notes LR: 20160413; GR: R01 DA035160/DA/NIDA NIH HHS/United States; GR: R01 DA035160/DA/NIDA NIH HHS/United States; JID: 101205018; OID: NLM: PMC4758799; epublish Place of Publication United States ISSN/ISBN 1545-1151; 1545-1151 Accession Number PMID: 26890407 Language eng SubFile Journal Article; Research Support, N.I.H., Extramural; IM DOI 10.5888/pcd13.150505 [doi] Output Language Unknown(0) PMID 26890407 Abstract INTRODUCTION: Waterpipe tobacco smoking, also known as hookah and shisha, has surged in popularity among young people in the United States. Waterpipe is also increasingly becoming the first tobacco product that young people try. Given the limited access to and limited portability of waterpipes, waterpipe smokers who become more nicotine dependent over time may be more likely to turn to cigarettes. This study examined the relationship between waterpipe tobacco smoking and susceptibility to cigarette smoking among young adults in the United States. METHODS: Using data from the 2012-2013 National Adult Tobacco Survey, a nationally representative sample of US adults, we reported rates of current waterpipe smoking and susceptibility to cigarette smoking by demographic characteristics and by use of other tobacco products among survey participants aged 18 to 24 years. Multivariable logistic regression was used to examine the relationship between current waterpipe smoking and susceptibility to cigarette smoking, defined as the lack of a firm intention not to smoke soon or within the next year. RESULTS: Of 2,528 young adults who had never established cigarette smoking, 15.7% (n = 398) reported being waterpipe smokers (every day or some days [n = 97; 3.8%] or rarely [n = 301; 11.9%]); 44.2% (176/398) of waterpipe smokers reported being susceptible to cigarette smoking. Those who smoked waterpipe rarely were 2.3 times as susceptible to cigarette smoking as those who were not current waterpipe smokers (OR = 2.3; 95% CI, 1.6-3.4). CONCLUSION: Current waterpipe smoking is associated with susceptibility to cigarette smoking among young adults in the United States. Longitudinal studies are needed to demonstrate causality between waterpipe smoking and initiation of cigarette smoking. Descriptors Links Book Title Database Publisher Data Source Authors Salloum,R.G., Haider,M.R., Barnett,T.E., Guo,Y., Getz,K.R., Thrasher,J.F., Maziak,W. Original/Translated Title URL Date of Electronic 20160218 PMCID PMC4758799 Editors
Sex Differences in Hookah-Related Images Posted on Tumblr: A Content Analysis	2016	a Division of General Internal Medicine, Department of Medicine , University of Pittsburgh School of Medicine , Pittsburgh , Pennsylvania , USA.; b Center for Research on Media, Technology, and Health , University of Pittsburgh School of Medicine , Pittsb	Read more...
Source Type Print(0) Ref Type Journal Article Periodical, Full Journal of health communication Periodical, Abbrev. J.Health Commun. Pub Date Free Form Volume 21 Issue 3 Start Page 366 Other Pages 375 Notes LR: 20160520; GR: K07 CA114315/CA/NCI NIH HHS/United States; GR: R01 CA140150/CA/NCI NIH HHS/United States; GR: R01-CA140150/CA/NCI NIH HHS/United States; GR: R01-CA140150-S1/CA/NCI NIH HHS/United States; JID: 9604100; NIHMS779493; OID: NLM: NIHMS779493 [ Place of Publication United States ISSN/ISBN 1087-0415; 1081-0730 Accession Number PMID: 26890733 Language eng SubFile Journal Article; Research Support, N.I.H., Extramural; T DOI 10.1080/10810730.2015.1095814 [doi] Output Language Unknown(0) PMID 26890733 Abstract Hookah tobacco smoking is prevalent, widespread, and associated with large amounts of toxicants. Hookah tobacco smoking may be viewed differently by males and females. For example, females have been drawn to types of tobacco that are flavored, milder, and marketed as more social and exotic. Individuals often use the growing segment of anonymous social networking sites, such as Tumblr, to learn about potentially dangerous or harmful behaviors. We used a systematic process involving stratification by time of day, day of week, and search term to gather a sample of 140 Tumblr posts related to hookah tobacco smoking. After a structured codebook development process, 2 coders independently assessed all posts in their entirety, and all disagreements were easily adjudicated. When data on poster sex and age were available, we found that 77% of posts were posted by females and 35% were posted by individuals younger than 18. The most prominent features displayed in all posts were references to or images of hookahs themselves, sexuality, socializing, alcohol, hookah smoke, and tricks performed with hookah smoke. Compared with females, males more frequently posted images of hookahs and alcohol-related images or references. This information may help guide future research in this area and the development of targeted interventions to curb this behavior. Descriptors Links Book Title Database Publisher Data Source Authors Primack,B.A., Carroll,M.V., Shensa,A., Davis,W., Levine,M.D. Original/Translated Title URL Date of Electronic 20160218 PMCID PMC4873310 Editors
Hydroxyl carboxylate based non-phosphorus corrosion inhibition process for reclaimed water pipeline and downstream recirculating cooling water system	2016	Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; Beijing Key Laboratory of Industrial Wastewater Treatment and Reuse, Research Center for Eco-Envir	Read more...
Source Type Print(0) Ref Type Journal Article Periodical, Full Journal of Environmental Sciences (China) Periodical, Abbrev. J.Environ.Sci.(China) Pub Date Free Form Jan Volume 39 Issue Start Page 13 Other Pages 21 Notes CI: Copyright (c) 2015; JID: 100967627; OTO: NOTNLM; 2015/07/23 [received]; 2015/10/06 [revised]; 2015/10/07 [accepted]; 2015/12/08 [aheadofprint]; ppublish Place of Publication Netherlands ISSN/ISBN 1001-0742; 1001-0742 Accession Number PMID: 26899639 Language eng SubFile Journal Article; Research Support, Non-U.S. Gov't; IM DOI 10.1016/j.jes.2015.10.007 [doi] Output Language Unknown(0) PMID 26899639 Abstract A combined process was developed to inhibit the corrosion both in the pipeline of reclaimed water supplies (PRWS) and in downstream recirculating cooling water systems (RCWS) using the reclaimed water as makeup. Hydroxyl carboxylate-based corrosion inhibitors (e.g., gluconate, citrate, tartrate) and zinc sulfate heptahydrate, which provided Zn(2+) as a synergistic corrosion inhibition additive, were added prior to the PRWS when the phosphate (which could be utilized as a corrosion inhibitor) content in the reclaimed water was below 1.7 mg/L, and no additional corrosion inhibitors were required for the downstream RCWS. Satisfactory corrosion inhibition was achieved even if the RCWS was operated under the condition of high numbers of concentration cycles. The corrosion inhibition requirement was also met by the appropriate combination of PO4(3-) and Zn(2+) when the phosphate content in the reclaimed water was more than 1.7 mg/L. The process integrated not only water reclamation and reuse, and the operation of a highly concentrated RCWS, but also the comprehensive utilization of phosphate in reclaimed water and the application of non-phosphorus corrosion inhibitors. The proposed process reduced the operating cost of the PRWS and the RCWS, and lowered the environmental hazard caused by the excessive discharge of phosphate. Furthermore, larger amounts of water resources could be conserved as a result. Descriptors Links Book Title Database Publisher . Published by Elsevier B.V Data Source Authors Wang,J., Wang,D., Hou,D. Original/Translated Title URL Date of Electronic 20151208 PMCID Editors
Biodiversity and technological-functional potential of lactic acid bacteria isolated from spontaneously fermented quinoa sourdoughs	2016	Centro de Referencia para Lactobacilos (CERELA-CONICET), S. M. de Tucuman, Tucuman, Argentina.; Instituto Superior de Investigaciones Biologicas (INSIBIO), CONICET-UNT, Tucuman, Argentina.; Centro de Referencia para Lactobacilos (CERELA-CONICET), S. M. de	Read more...
Source Type Print(0) Ref Type Journal Article Periodical, Full Journal of applied microbiology Periodical, Abbrev. J.Appl.Microbiol. Pub Date Free Form May Volume 120 Issue 5 Start Page 1289 Other Pages 1301 Notes CI: (c) 2016; JID: 9706280; OTO: NOTNLM; 2015/11/11 [received]; 2016/02/01 [revised]; 2016/02/16 [accepted]; 2016/03/30 [aheadofprint]; ppublish Place of Publication England ISSN/ISBN 1365-2672; 1364-5072 Accession Number PMID: 26909667 Language eng SubFile Journal Article; Research Support, Non-U.S. Gov't; IM DOI 10.1111/jam.13104 [doi] Output Language Unknown(0) PMID 26909667 Abstract AIMS: To analyse lactic acid bacteria (LAB) diversity and technological-functional and safety properties of strains present during spontaneous fermented quinoa sourdoughs. METHODS AND RESULTS: Fermentation was performed by daily backslopping at 30 degrees C for 10 days. Autochthonous LAB microbiota was monitored by a biphasic approach combining random amplified polymorphic DNA (RAPD)-PCR and rRNA gene sequencing with PCR-denaturing gradient gel electrophoresis (DGGE) analysis. Identification and intraspecies differentiation allowed to group isolates within nine LAB species belonging to four genera. A succession of LAB species occurred during 10-days backslopping; Lactobacillus plantarum and Lactobacillus brevis were detected as dominant species in the consortium. The characterization of 15 representative LAB strains was performed based on the acidifying capacity, starch and protein hydrolysis, gamma-aminobutyric acid and exopolysaccharides production, antimicrobial activity and antibiotic resistance. CONCLUSION: Strains characterization led to the selection of Lact. plantarum CRL1905 and Leuconostoc mesenteroides CRL1907 as candidates to be assayed as functional starter culture for the gluten-free (GF) quinoa fermented products. SIGNIFICANCE AND IMPACT OF THE STUDY: Results on native LAB microbiota present during quinoa sourdough fermentation will allow the selection of strains with appropriate technological properties to be used as a novel functional starter culture for GF-fermented products. Descriptors Links Book Title Database Publisher The Society for Applied Microbiology Data Source Authors Ruiz Rodriguez,L., Vera Pingitore,E., Rollan,G., Cocconcelli,P.S., Fontana,C., Saavedra,L., Vignolo,G., Hebert,E.M. Original/Translated Title URL Date of Electronic 20160330 PMCID Editors
The Impact of the West Africa Ebola Outbreak on Obstetric Health Care in Sierra Leone	2016	Department of Public Health Sciences, Karolinska Institutet, Stockholm, Sweden.; Department of Surgery, St Olav Hospital, Trondheim, Norway.; CapaCare, Trondheim, Norway.; Department of Public Health Sciences, Karolinska Institutet, Stockholm, Sweden.; Un	Read more...
Source Type Print(0) Ref Type Journal Article Periodical, Full PloS one Periodical, Abbrev. PLoS One Pub Date Free Form 24-Feb Volume 11 Issue 2 Start Page e0150080 Other Pages Notes LR: 20160228; JID: 101285081; OID: NLM: PMC4766087; 2016 [ecollection]; 2015/12/08 [received]; 2016/02/09 [accepted]; 2016/02/24 [epublish]; epublish Place of Publication United States ISSN/ISBN 1932-6203; 1932-6203 Accession Number PMID: 26910462 Language eng SubFile Journal Article; Research Support, Non-U.S. Gov't; IM DOI 10.1371/journal.pone.0150080 [doi] Output Language Unknown(0) PMID 26910462 Abstract BACKGROUND: As Sierra Leone celebrates the end of the Ebola Virus Disease (EVD) outbreak, we can begin to fully grasp its impact on already weak health systems. The EVD outbreak in West Africa forced many hospitals to close down or reduce their activity, either to prevent nosocomial transmission or because of staff shortages. The aim of this study is to assess the potential impact of EVD on nationwide access to obstetric care in Sierra Leone. METHODS AND FINDINGS: Community health officers collected weekly data between January 2014-May 2015 on in-hospital deliveries and caesarean sections (C-sections) from all open facilities (public, private for-profit and private non-profit sectors) offering emergency obstetrics in Sierra Leone. This was compared to official data of EVD cases per district. Logistic and Poisson regression analyses were used to compute risk and rate estimates. Nationwide, the number of in-hospital deliveries and C-sections decreased by over 20% during the EVD outbreak. The decline occurred early on in the EVD outbreak and was mainly attributable to the closing of private not-for-profit hospitals rather than government facilities. Due to difficulties in collecting data in the midst of an epidemic, limitations of this study include some missing data points. CONCLUSIONS: Both the number of in-hospital deliveries and C-sections substantially declined shortly after the onset of the EVD outbreak. Since access to emergency obstetric care, like C-sections, is associated with decreased maternal mortality, many women are likely to have died due to the reduced access to appropriate care during childbirth. Future research on indirect health effects of health system breakdown should ideally be nationwide and continue also into the recovery phase. It is also important to understand the mechanisms behind the deterioration so that important health services can be reestablished. Descriptors Links Book Title Database Publisher Data Source Authors Brolin Ribacke,K.J., van Duinen,A.J., Nordenstedt,H., Hoijer,J., Molnes,R., Froseth,T.W., Koroma,A.P., Darj,E., Bolkan,H.A., Ekstrom,A. Original/Translated Title URL Date of Electronic 20160224 PMCID PMC4766087 Editors
Occurrence of bisphenols, bisphenol A diglycidyl ethers (BADGEs), and novolac glycidyl ethers (NOGEs) in indoor air from Albany, New York, USA, and its implications for inhalation exposure	2016	Wadsworth Center, New York State Department of Health, and Department of Environmental Health Sciences, School of Public Health, State University of New York at Albany, Albany, NY 12201, United States.; Center for Disease Control and Prevention of Yangtze	Read more...
Source Type Print(0) Ref Type Journal Article Periodical, Full Chemosphere Periodical, Abbrev. Chemosphere Pub Date Free Form May Volume 151 Issue Start Page 1 Other Pages 8 Notes CI: Copyright (c) 2016; JID: 0320657; OTO: NOTNLM; 2015/12/24 [received]; 2016/02/06 [revised]; 2016/02/08 [accepted]; 2016/03/15 [aheadofprint]; ppublish Place of Publication England ISSN/ISBN 1879-1298; 0045-6535 Accession Number PMID: 26923236 Language eng SubFile Journal Article; IM DOI 10.1016/j.chemosphere.2016.02.038 [doi] Output Language Unknown(0) PMID 26923236 Abstract Bisphenols, bisphenol A diglycidyl ethers (BADGEs), and novolac glycidyl ethers (NOGEs) are used in the production of epoxy resins and polycarbonate plastics. Despite the widespread application of these chemicals in household products, studies on their occurrence in indoor air are limited. In this study, 83 indoor air samples were collected in 2014 from various locations in Albany, New York, USA, to determine the concentrations of bisphenols, BADGEs (refer to BADGE and its derivatives), and NOGEs (refer to NOGE and its derivatives) and to calculate inhalation exposure to these compounds. Among eight bisphenols measured, BPA, BPF, and BPS were found in bulk air (i.e., vapor plus particulate phases), at geometric mean (GM) concentrations of 0.43, 0.69 and 0.09 ng m(-3), respectively. Among 11 BADGEs and NOGEs determined, BADGE.2H2O was the predominant compound found in indoor air (detection rate [DR]: 85.5%), at concentrations as high as 6.71 ng m(-3). Estimation of inhalation exposure to these chemicals for various age groups showed that teenagers had the highest exposure doses to BPA, BPF, BPS, and BADGE.2H2O at 5.91, 9.48, 1.24, and 3.84 ng day(-1), respectively. The body weight-normalized estimates of exposure were the highest for infants, with values at 0.24, 0.39, 0.05, and 0.16 ng kg bw(-1) day(-1) for BPA, BPF, BPS, and BADGE.2H2O, respectively. This is the first survey to report inhalation exposure to bisphenols, BADGEs, and NOGEs. Descriptors Links Book Title Database Publisher Elsevier Ltd Data Source Authors Xue,J., Wan,Y., Kannan,K. Original/Translated Title URL Date of Electronic 20160315 PMCID Editors
Comparative evaluation of surface topography of tooth prepared using erbium, chromium: Yttrium, scandium, gallium, garnet laser and bur and its clinical implications	2015	Department of Prosthodontics, Crown and Bridge, Maulana Azad Institute of Dental Sciences, New Delhi, India.; Department of Prosthodontics, Crown and Bridge, Maulana Azad Institute of Dental Sciences, New Delhi, India.; Department of Prosthodontics, Crown	Read more...
Source Type Print(0) Ref Type Journal Article Periodical, Full Journal of Indian Prosthodontic Society Periodical, Abbrev. J.Indian.Prosthodont.Soc. Pub Date Free Form Jan-Mar Volume 15 Issue 1 Start Page 23 Other Pages 28 Notes LR: 20160308; JID: 101255941; OID: NLM: PMC4762284; OTO: NOTNLM; ppublish Place of Publication India ISSN/ISBN 0972-4052; 0972-4052 Accession Number PMID: 26929482 Language eng SubFile Journal Article DOI 10.4103/0972-4052.155042 [doi] Output Language Unknown(0) PMID 26929482 Abstract BACKGROUND: Erbium, chromium: Yttrium, scandium, gallium, garnet (Er, Cr: YSGG) laser has been successfully used in the ablation of dental hard and soft tissues. It has been reported that this system is also useful for preparing tooth surfaces and etching, but no consensus exist in the literature regarding the advantage of lasers over conventional tooth preparation technique. MATERIALS AND METHODS: Labial surfaces of 25 extracted human maxillary central incisors were divided into two halves. Right half was prepared with diamond bur and left half with Er, Cr; YSGG laser and a reduction of 0.3-0.5 mm was carried out. Topography of prepared surfaces of five teeth were examined under scanning electron microscope (SEM). The remaining samples were divided into 4 groups of 10 specimens each based on the surface treatment received: One group was acid etched and other was nonetched. Composite resin cylinders were bonded on prepared surfaces and shear bond strength was assessed using a universal testing machine. RESULTS: The SEM observation revealed that the laser prepared surfaces were clean, highly irregular and devoid of a smear layer. Bur prepared surfaces were relatively smooth but covered with smear layer. Highest bond strength was shown by laser prepared acid etched group, followed by bur prepared the acid etched group. The bur prepared nonacid etched group showed least bond strength. CONCLUSIONS: Er, Cr: YSGG laser can be used for preparing tooth and bond strength value achieved by laser preparation alone without surface treatment procedure lies in the range of clinical acceptability. Descriptors Links Book Title Database Publisher Data Source Authors Verma,M., Kumari,P., Gupta,R., Gill,S., Gupta,A. Original/Translated Title URL Date of Electronic PMCID PMC4762284 Editors
Magnetic micro-solid-phase-extraction of polycyclic aromatic hydrocarbons in water	2016	Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore; National University of Singapore Environmental Research Institute, T-Lab Building #02-01, 5A Engineering Drive 1, Singapore 117411, Singapore.; Depa	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-Apr Volume 1440 Issue Start Page 23 Other Pages 30 Notes CI: Copyright (c) 2016; JID: 9318488; 0 (Polycyclic Hydrocarbons, Aromatic); 0 (Water Pollutants, Chemical); 059QF0KO0R (Water); 7782-42-5 (Graphite); OTO: NOTNLM; 2015/11/22 [received]; 2016/02/14 [revised]; 2016/02/15 [accepted]; 2016/02/17 [aheadofprin Place of Publication Netherlands ISSN/ISBN 1873-3778; 0021-9673 Accession Number PMID: 26931424 Language eng SubFile Journal Article; Research Support, Non-U.S. Gov't; IM DOI 10.1016/j.chroma.2016.02.046 [doi] Output Language Unknown(0) PMID 26931424 Abstract A novel sorbent, magnetic chitosan functionalized graphene oxide (MCFG) was synthesized and used in the micro-solid-phase-extraction (mu-SPE) and gas chromatography-mass spectrometric (GC-MS) analysis of polycyclic aromatic hydrocarbons (PAHs) from water. Through the use of the magnetic sorbent, the mu-SPE device also functioned as a stir bar during extraction. Three types of MCFG were prepared using glutaraldehyde cross-linked chitosan and graphene oxide with different amounts of magnetic nanoparticles (Fe3O4) (0.05g, 0.07g and 0.1g). The material was characterized using Fourier transform infrared spectroscopy and field emission scanning electron microscopy. Parameters affecting the extraction such as the type of sorbent, extraction and desorption times, volume of sample solution and type of desorption solvent were optimized. Under the most favourable conditions, the highest extraction was obtained by using the composite prepared with 0.1g of Fe3O4. For the latter material as sorbent, the linearity of the analytes was in the range of 0.01 and 100mugL(-1) for naphthalene, fluoranthene and pyrene while acenaphthylene and phenanthrene exhibited linearity in the range of 0.05 and 100mugL(-1). For fluorene and anthracene, the linearity range was from 0.01 to 50mugL(-1). The coefficients of determination (r(2)) associated with the above linear ranges were higher than 0.987. The limits of detection from GC-MS analysis of the seven PAHs were in the range 0.2-1.8ngL(-1); limits of quantification were between 0.8 and 5.9ngL(-1) while the relative standard deviations (RSDs) varied from 2.1 to 8.2%. The recoveries of the method for the compounds at spiking levels of 1 and 5mugL(-1) were in the range 67.5-106.9% with RSDs below 15%. The enrichment factors were found to be in between 67 and 302. The developed method afforded an interesting and innovative approach using MCFG as an efficient and promising sorbent. Descriptors Links Book Title Database Publisher Elsevier B.V Data Source Authors Naing,N.N., Yau Li,S.F., Lee,H.K. Original/Translated Title URL Date of Electronic 20160217 PMCID Editors

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