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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 | SearchLink Sort ascending |
|---|---|---|---|
| Highly porous silica-polyaniline nanocomposite as a novel solid-phase microextraction fiber coating | 2012 | Department of Analytical Chemistry, Faculty of Chemistry, Razi University, Kermanshah, Iran. mbgholivand@yahoo.com | Read more... |
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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
35
Issue
1
Start Page
101
Other Pages
106
Notes
CI: Copyright (c) 2012; JID: 101088554; 0 (Aniline Compounds); 0 (Polycyclic Hydrocarbons, Aromatic); 0 (Water Pollutants, Chemical); 0 (polyaniline); 7631-86-9 (Silicon Dioxide); 2011/08/03 [received]; 2011/09/14 [revised]; 2011/09/28 [accepted]; 2011/12
Place of Publication
Germany
ISSN/ISBN
1615-9314; 1615-9306
Accession Number
PMID: 22144100
Language
eng
SubFile
Evaluation Studies; Journal Article; IM
DOI
10.1002/jssc.201100694 [doi]
Output Language
Unknown(0)
PMID
22144100
Abstract
A highly porous fiber-coated SBA-15/polyaniline material was prepared for solid-phase microextraction (SPME). The SBA-15/polyaniline nanocomposite was synthesized via chemical polymerization. The prepared SBA-15/polyaniline particles were analyzed by scanning electron microscopy analysis. The prepared nanomaterial was immobilized onto a stainless steel wire for fabrication of the SPME fiber. The fiber was evaluated for the extraction of some polycyclic aromatic hydrocarbons (PAHs) from aqueous sample solutions in combination with gas chromatography-mass spectrometry (GC-MS). In optimum conditions (extraction temperature 60 degrees C, extraction time 40 min, ionic strength 20%, stirring rate: 500 rpm, desorption temperature 260 degrees C, desorption time 2 min), the repeatability for one fiber (n=3), expressed as relative standard deviation (RSD%), was between 5.3 and 8.6% for the test compounds. For deionized water, spiked with selected PAHs, the detection limits for the studied compounds were between 2 and 20 pg/mL.
Descriptors
Links
Book Title
Database
Publisher
WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Data Source
Authors
Gholivand,M.B., Abolghasemi,M.M., Fattahpour,P.
Original/Translated Title
URL
Date of Electronic
20111205
PMCID
Editors
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| Patterns of water-pipe and cigarette smoking initiation in schoolchildren: Irbid longitudinal smoking study | 2012 | Department of Epidemiology and Biostatistics, School of Public Health, University of Memphis, 3820 DeSoto Avenue, Browning Hall 114, Memphis, TN 38152, USA. fmzayek@memphis.edu | Read more... |
|
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Nicotine & tobacco research : official journal of the Society for Research on Nicotine and Tobacco
Periodical, Abbrev.
Nicotine Tob.Res.
Pub Date Free Form
Apr
Volume
14
Issue
4
Start Page
448
Other Pages
454
Notes
LR: 20151119; GR: R01 DA024876/DA/NIDA NIH HHS/United States; JID: 9815751; 059QF0KO0R (Water); OID: NLM: PMC3313787; 2011/12/02 [aheadofprint]; ppublish
Place of Publication
England
ISSN/ISBN
1469-994X; 1462-2203
Accession Number
PMID: 22140149
Language
eng
SubFile
Journal Article; Research Support, N.I.H., Extramural; IM
DOI
10.1093/ntr/ntr234 [doi]
Output Language
Unknown(0)
PMID
22140149
Abstract
INTRODUCTION: Tobacco use remains a major public health problem worldwide. Water-pipe smoking is spreading rapidly and threatening to undermine the successes achieved in tobacco control. METHODS: A school-based longitudinal study in the city of Irbid, Jordan, was performed from 2008 to 2010. All seventh-grade students in 19 randomly selected schools, out of a total of 60 schools in the city, were enrolled at baseline and surveyed annually. RESULTS: Of the 1781 students enrolled at baseline 1,701 (95.5%) were still in the study at the end of the second year of follow-up (869 boys, median age at baseline 13 years). Ever and current water-pipe smoking were higher than those of cigarette smoking at baseline (ever smoking: 25.9% vs. 17.6% and current smoking: 13.3% vs. 5.3% for water-pipe and cigarette smoking, respectively; p
Descriptors
Links
Book Title
Database
Publisher
Data Source
Authors
Mzayek,F., Khader,Y., Eissenberg,T., Al Ali,R., Ward,K.D., Maziak,W.
Original/Translated Title
URL
Date of Electronic
20111202
PMCID
PMC3313787
Editors
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| Determination of synthetic polycyclic musks in aqueous samples by ultrasound-assisted dispersive liquid-liquid microextraction and gas chromatography-mass spectrometry | 2012 | Department of Chemistry, National Central University, Chung-Li 320, Taiwan. | Read more... |
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Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Analytical and bioanalytical chemistry
Periodical, Abbrev.
Anal.Bioanal Chem.
Pub Date Free Form
Feb
Volume
402
Issue
4
Start Page
1723
Other Pages
1730
Notes
LR: 20160512; JID: 101134327; 0 (Fatty Acids, Monounsaturated); 0 (Water Pollutants, Chemical); 059QF0KO0R (Water); 095I377U8F (musk); 2011/08/07 [received]; 2011/11/11 [accepted]; 2011/11/08 [revised]; 2011/12/04 [aheadofprint]; ppublish
Place of Publication
Germany
ISSN/ISBN
1618-2650; 1618-2642
Accession Number
PMID: 22139524
Language
eng
SubFile
Evaluation Studies; Journal Article; Research Support, Non-U.S. Gov't; IM
DOI
10.1007/s00216-011-5573-3 [doi]
Output Language
Unknown(0)
PMID
22139524
Abstract
A simple and solvent-minimized procedure for the determination of six commonly found synthetic polycyclic musks in aqueous samples using ultrasound-assisted dispersive liquid-liquid microextraction (UA-DLLME) coupled with gas chromatography-mass spectrometry (GC-MS) is described. The parameters affecting the extraction efficiency of analytes from water samples were systematically investigated. The best extraction conditions involved the rapid injection of a mixture of 1.0 mL of isopropyl alcohol (as a dispersant) and 10 muL of carbon tetrachloride (as an extractant) into 10 mL of water containing 0.5 g of sodium chloride in a conical-bottom glass tube. After ultrasonication for 1.0 min and centrifugation at 5,000 rpm (10 min), the sedimented phase 1.0 muL was directly injected into the GC-MS system. The limits of quantitation (LOQs) were less than 0.6 ng/L. The precision for these analytes, as indicated by relative standard deviations (RSDs), was less than 11% for both intra- and interday analysis. Accuracy, expressed as the mean extraction recovery, was between 71 and 104%. Their total concentrations were determined in the range from 8.3 to 63.9 ng/L in various environmental samples by using a standard addition method.
Descriptors
Links
Book Title
Database
Publisher
Data Source
Authors
Yang,C.Y., Ding,W.H.
Original/Translated Title
URL
Date of Electronic
20111204
PMCID
Editors
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| Microbial diversity of a community for ensiling rice straw at low temperature and fermentation dynamics | 2011 | College of Life Sciences, Northeast Forestry University, Harbin 150040, China. ayanghy@yahoo.com.cn | Read more... |
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Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Wei sheng wu xue bao = Acta microbiologica Sinica
Periodical, Abbrev.
Wei Sheng Wu Xue Bao
Pub Date Free Form
Sep
Volume
51
Issue
9
Start Page
1248
Other Pages
1255
Notes
LR: 20151119; JID: 21610860R; 0 (RNA, Ribosomal, 16S); ppublish
Place of Publication
China
ISSN/ISBN
0001-6209; 0001-6209
Accession Number
PMID: 22126081
Language
chi
SubFile
English Abstract; Journal Article; Research Support, Non-U.S. Gov't; IM
DOI
Output Language
Unknown(0)
PMID
22126081
Abstract
OBJECTIVE: To accelerate the conversion of rice straw into feeds in the low-temperature region, a microbial community was constructed by continuous enrichment cultivation. Microbial diversity and dynamics during the fermentation at 10 degrees C was analyzed. METHODS: The community was selected at 5 degrees C under static condition. To analyze the inoculating effects, the community and commercial inoculant ( CI: composed of Lactobacillus plantarum, Enterococcus faecium, L. salivarilus, Pediococcus acidilactici) were respectively inoculated into the rice straw for 30 d fermentation at 10 degrees C. Fermented products were detected by gas chromatography - mass spectrometry (GC-MS). Composition microorganisms of the community were analyzed using cloning library. Microbial dynamics during the fermentation was detected by denatured gradient gel eletrophoresis (DGGE). Quantitative PCR was used for tracking the composition microorganisms of the community during the fermentation. RESULTS: The results from 16S rDNA cloning library showed that the community was mainly composed of Lactobacillus spp. and Leuconostoc spp. At 6d fermentation, the pH and the lactic acid bacterial colony forming units (LAB CFUs) in the fermented rice straw with the community amounted to 4.3 and 2.9 x 10(9) CFU/g fresh matter (FM), respectively. The pH and LAB CFUs with the CI were respectively 5.3 and 2.9 x 10(9) CFU/g FM. At 30 d fermentation, the lactic acid concentrations with the community and the CI were respectively 8.1 g/kg FM and 2.0 g/kg FM. From DGGE patterns, both L. sakei and Leuconostoc inhae of the community were detected at 6d fermentation and existed during the fermentation. For the treatment with the CI, the uncultured bacterium was detected at 6d fermentation besides the composition microorganisms of the CI. At 16d and 30d fermentation, only L. plantarum and E. faecium were detected. Quantitative PCR showed DNA mass of L. sakei amounted to 41.0% at 6d fermentation in the treatment with the community. At 16d, DNA mass of L. sakei was 65%. The highest value (5.5%) of DNA mass of Le inhae appeared at 6d of fermentation. CONCLUSION: The community could effectively colonize into the rice straw fermentation system and accelerate the fermentation process at low temperature. The dominating microorganism of the community was L. sakei at 10 degrees C.
Descriptors
Links
Book Title
Database
Publisher
Data Source
Authors
Yang,H., Yuan,X., Liu,X., Wang,X., Cui,Z.
Original/Translated Title
URL
Date of Electronic
PMCID
Editors
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| Graphene oxide bonded fused-silica fiber for solid-phase microextraction-gas chromatography of polycyclic aromatic hydrocarbons in water | 2012 | Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, P. R. China. | 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
35
Issue
1
Start Page
93
Other Pages
100
Notes
CI: Copyright (c) 2012; JID: 101088554; 0 (Oxides); 0 (Polycyclic Hydrocarbons, Aromatic); 0 (Water Pollutants, Chemical); 7631-86-9 (Silicon Dioxide); 7782-42-5 (Graphite); 2011/07/14 [received]; 2011/09/02 [revised]; 2011/09/26 [accepted]; 2011/11/28 [a
Place of Publication
Germany
ISSN/ISBN
1615-9314; 1615-9306
Accession Number
PMID: 22125228
Language
eng
SubFile
Journal Article; Research Support, Non-U.S. Gov't; IM
DOI
10.1002/jssc.201100612 [doi]
Output Language
Unknown(0)
PMID
22125228
Abstract
A novel chemically bonded graphene oxide/fused-silica fiber was prepared and applied in solid-phase microextraction of six polycyclic aromatic hydrocarbons from water samples coupled with gas chromatography. It exhibited high extraction efficiency and excellent stability. Effects of extraction time, extraction temperature, ionic strength, stirring rate and desorption conditions were investigated and optimized in our work. Detection limits to the six polycyclic aromatic hydrocarbons were less than 0.08 mug/L, and their calibration curves were all linear (R(2)>/=0.9954) in the range from 0.05 to 200 mug/L. Single fiber repeatability and fiber-to-fiber reproducibility were less than 6.13 and 15.87%, respectively. This novel fiber was then utilized to analyze two real water samples from the Yellow River and local waterworks, and the recoveries of samples spiked at 1 and 10 mug/L ranged from 84.48 to 118.24%. Compared with other coating materials, this graphene oxide-coated fiber showed many advantages: wide linear range, low detection limit, and good stability in acid, alkali, organic solutions and at high temperature.
Descriptors
Links
Book Title
Database
Publisher
WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Data Source
Authors
Xu,L., Feng,J., Li,J., Liu,X., Jiang,S.
Original/Translated Title
URL
Date of Electronic
20111128
PMCID
Editors
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| Young adults' perceptions about established and emerging tobacco products: results from eight focus groups | 2012 | Division of Behavior Science & Health Education, Saint Louis University School of Public Health, 3545 Lafayette Avenue, Saint Louis, MO 63104, USA. wray@slu.edu | Read more... |
|
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Nicotine & tobacco research : official journal of the Society for Research on Nicotine and Tobacco
Periodical, Abbrev.
Nicotine Tob.Res.
Pub Date Free Form
Feb
Volume
14
Issue
2
Start Page
184
Other Pages
190
Notes
GR: USPHS 5U48DP0000605/DP/NCCDPHP CDC HHS/United States; JID: 9815751; 2011/11/22 [aheadofprint]; ppublish
Place of Publication
England
ISSN/ISBN
1469-994X; 1462-2203
Accession Number
PMID: 22110049
Language
eng
SubFile
Journal Article; Research Support, U.S. Gov't, P.H.S.; IM
DOI
10.1093/ntr/ntr168 [doi]
Output Language
Unknown(0)
PMID
22110049
Abstract
INTRODUCTION: In order to sustain their market, tobacco producers target young adults through novel product design and marketing strategies. Public health professionals need to understand young adults' risks perceptions about and use of new tobacco products to best inform tobacco control interventions. METHODS: In 2009, researchers conducted 8 focus groups with 67 young adults stratified by self-reported tobacco use and nonuse, residence in rural and urban areas, and living in a state with or without a statewide smoking restriction policy. Participants provided feedback about their knowledge and risk perceptions about and use of tobacco products and marketing. RESULTS: Participants reported a high level of familiarity with a wide range of novel tobacco products. A great deal of confusion and disagreement appeared with regard to absolute and relative risk of different tobacco products. Participants readily discussed using smokeless tobacco products as alternatives to smoking when smoking is prohibited. Fewer differences in tobacco-related knowledge risk perceptions and use were found between urban and rural participants and those in smoke-free policy and nonpolicy states than between user and nonuser groups. Both users and nonusers were familiar with and skeptical about tobacco marketing and prevention efforts. CONCLUSIONS: Young adults are familiar with many tobacco products, but they convey little understanding of relative risks of new or trendy tobacco products, such as snus or hookah. Mindful of industry innovation, tobacco control advocates must continuously update prevention efforts, seeking new strategies to limit promotion, marketing, and use of new and conventional products.
Descriptors
Links
Book Title
Database
Publisher
Data Source
Authors
Wray,R.J., Jupka,K., Berman,S., Zellin,S., Vijaykumar,S.
Original/Translated Title
URL
Date of Electronic
20111122
PMCID
Editors
|
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| Detailed esophageal function and morphological analysis shows high prevalence of gastroesophageal reflux disease and Barrett's esophagus in patients with cervical inlet patch | 2012 | First Department of Medicine, Albert Szent-Gyorgyi Medical Centre, University of Szeged, Szeged State Health Centre, Budapest, Hungary. air@in1st.szote.u-szeged.hu | Read more... |
|
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Diseases of the esophagus : official journal of the International Society for Diseases of the Esophagus / I.S.D.E
Periodical, Abbrev.
Dis.Esophagus
Pub Date Free Form
Aug
Volume
25
Issue
6
Start Page
498
Other Pages
504
Notes
CI: (c) 2011 Copyright the Authors. Journal compilation (c) 2011; JID: 8809160; 2011/11/22 [aheadofprint]; ppublish
Place of Publication
Australia
ISSN/ISBN
1442-2050; 1120-8694
Accession Number
PMID: 22107367
Language
eng
SubFile
Journal Article; Research Support, Non-U.S. Gov't; IM
DOI
10.1111/j.1442-2050.2011.01281.x [doi]
Output Language
Unknown(0)
PMID
22107367
Abstract
Although the pathogenesis of cervical inlet patch (CIP) is not fully understood, most authors consider it as a congenital abnormality, whereas others surmise it to be related to gastroesophageal reflux disease (GERD). We aimed to evaluate esophageal function and the prevalence of GERD and Barrett's esophagus in patients with CIP. GERD is defined by the presence of erosive esophagitis or an abnormal pH monitoring. Seventy-one consecutive patients with endoscopic and histological evidence of CIP were prospectively evaluated. Esophageal symptom analysis, 24-hour simultaneous biliary reflux and double-channel pH-monitoring, and esophageal manometry were carried out in 65/71 (92%) patients and in 25 matched controls. Six patients were not suitable for testing and were, therefore, excluded. The histological evaluation of the heterotopic islands showed cardia and/or oxyntic mucosa in 64/65 (98%) patients and specialized intestinal metaplasia (SIM) in one patient (2%). The cardia and/or oxyntic mucosa was accompanied by focally appearing pancreatic acinar metaplasia and pancreatic ductal metaplasia in 7/64 (11%) and in 1/64 (2%), superficial mucous glands in 6/64 (9%), and SIM in 2/64 (3%) cases. In total, SIM was present in three patients (5%), and one of them had low-grade dysplasia. At the gastroesophageal junction, 28 (43%) patients had columnar metaplasia, including nine (14%) patients with SIM. Erosive esophagitis was present in 37 (57%) cases. Thirty-two patients (49%) had abnormal acid reflux in the distal and 25 (38%) in the proximal esophagus. Abnormal biliary reflux was present in 25 (38%) cases. On the basis of endoscopic and pH studies, GERD was established in 44/65 (68%) patients. Typical reflux symptoms were common (33/65, 51%). The combined 24-hour biliary and double-channel pH-monitoring detected significantly more significant acidic reflux at both measurement points and significantly longer bile exposure time in the distal esophagus in patients with CIP. Acid secretion in the CIP was detected in three (5%) cases. Esophageal manometry revealed decreased LES pressure and prolonged relaxation with decreased peristaltic wave amplitude, and an increased number of simultaneous contractions in the esophageal body. The detailed evaluation of the esophageal morphology and function in subjects with CIP showed a high prevalence of GERD and Barrett's esophagus. Further studies are needed to evaluate whether combined acidic and biliary reflux is able to promote similar histomorphological changes in the CIP, as it is shown distally in patients with Barrett's esophagus.
Descriptors
Links
Book Title
Database
Publisher
Wiley Periodicals, Inc. and the International Society for Diseases of the Esophagus
Data Source
Authors
Rosztoczy,A., Izbeki,F., Nemeth,I.B., Dulic,S., Vadaszi,K., Roka,R., Gecse,K., Gyokeres,T., Lazar,G., Tiszlavicz,L., Wittmann,T.
Original/Translated Title
URL
Date of Electronic
20111122
PMCID
Editors
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| Association of six-minute walk distance (6MWD) with resting pulmonary function in patients with chronic obstructive pulmonary disease (COPD) | 2011 | Department of Respiratory Medicine, Osaka City University, Graduate School of Medicine, Osaka, Japan. pattypoti@hotmail.com | Read more... |
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Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Osaka city medical journal
Periodical, Abbrev.
Osaka City Med.J.
Pub Date Free Form
Jun
Volume
57
Issue
1
Start Page
21
Other Pages
29
Notes
JID: 0376413; ppublish
Place of Publication
Japan
ISSN/ISBN
0030-6096; 0030-6096
Accession Number
PMID: 22106764
Language
eng
SubFile
Journal Article; IM
DOI
Output Language
Unknown(0)
PMID
22106764
Abstract
BACKGROUND: The six-minute walk test (6MWT) is widely used for integrated assessment of patients with chronic obstructive pulmonary disease (COPD). However, little is known concerning which resting pulmonary function test measurements relate to six-minute walk distance (6MWD). METHODS: We retrospectively analyzed consecutive data of spirometry, lung volume analysis, and measurements of diffusing capacity of the lung for carbon monoxide (DLCO) and 6MWT from total of one-hundred and thirty patients with COPD. Univariate and multivariate analyses were performed to examine the relationships between 6MWD and variables. RESULTS: By linear regression analysis, 6MWD was significantly associated with age, weight, BMI, FEV1.0, FEV1.0 (% predicted), IC, TLC, IC/TLC, FEF25-75, DLCO (% predicted), and DLCO/VA. Stepwise multiple regression analysis revealed that age (r2 = 0.173; p
Descriptors
Links
Book Title
Database
Publisher
Data Source
Authors
Fujimoto,H., Asai,K., Watanabe,T., Kanazawa,H., Hirata,K.
Original/Translated Title
URL
Date of Electronic
PMCID
Editors
|
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| Development of multiwalled carbon nanotubes based micro-solid-phase extraction for the determination of trace levels of sixteen polycyclic aromatic hydrocarbons in environmental water samples | 2011 | Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore. | 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
30-Dec
Volume
1218
Issue
52
Start Page
9321
Other Pages
9327
Notes
CI: Copyright (c) 2011; JID: 9318488; 0 (Nanotubes, Carbon); 0 (Polycyclic Hydrocarbons, Aromatic); 0 (Water Pollutants, Chemical); 2011/06/15 [received]; 2011/10/11 [revised]; 2011/10/28 [accepted]; 2011/11/03 [aheadofprint]; ppublish
Place of Publication
Netherlands
ISSN/ISBN
1873-3778; 0021-9673
Accession Number
PMID: 22099227
Language
eng
SubFile
Journal Article; Research Support, Non-U.S. Gov't; IM
DOI
10.1016/j.chroma.2011.10.066 [doi]
Output Language
Unknown(0)
PMID
22099227
Abstract
Micro-solid-phase extraction (mu-SPE) was developed for the determination of trace level of 16 United States Environmental Protection Agency priority polycyclic aromatic hydrocarbons (PAHs) in river water samples with gas chromatography-mass spectrometry (GC-MS). In the mu-SPE device, multiwalled carbon nanotubes was employed as sorbent and was packed inside an porous polypropylene membrane "envelope" whose edges were heat-sealed to secure the contents. The mu-SPE device was placed in a stirred sample solution to extract the analytes. The porous polypropylene membrane envelope in mu-SPE device acts as a filter to exclude potential interferences, such as eliminating or reducing the influence of particles that are bigger than the pore size. After extraction, analyte desorption was carried out with a suitable organic solvent under ultrasonication. Important extraction parameters were optimized in detail, including the selection and amount of sorbent materials, the extraction temperature and extraction time, desorption solvent and desorption time, amount of organic modifier, agitation speed and sample ionic strength. Under the developed extraction conditions, the proposed method provided good linearity in the range of 0.1-50 mug/L, low limits of detection (4.2-46.5 ng/L), and good repeatability of the extractions (relative standard deviations,
Descriptors
Links
Book Title
Database
Publisher
Elsevier B.V
Data Source
Authors
Guo,L., Lee,H.K.
Original/Translated Title
URL
Date of Electronic
20111103
PMCID
Editors
|
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| Development of liquid phase microextraction based on manual shaking and ultrasound-assisted emulsification method for analysis of organochlorine pesticides in aqueous samples | 2011 | Department of Chemistry, National Tsing Hua University, Hsinchu 30013, Taiwan. | 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
23-Dec
Volume
1218
Issue
51
Start Page
9142
Other Pages
9148
Notes
LR: 20151119; CI: Copyright (c) 2011; JID: 9318488; 0 (Emulsions); 0 (Fatty Alcohols); 0 (Hydrocarbons, Chlorinated); 0 (Pesticides); 0 (Water Pollutants, Chemical); 451W47IQ8X (Sodium Chloride); 89V4LX791F (n-decyl alcohol); 2011/09/28 [received]; 2011/1
Place of Publication
Netherlands
ISSN/ISBN
1873-3778; 0021-9673
Accession Number
PMID: 22099225
Language
eng
SubFile
Journal Article; Research Support, Non-U.S. Gov't; IM
DOI
10.1016/j.chroma.2011.10.084 [doi]
Output Language
Unknown(0)
PMID
22099225
Abstract
A novel method using sample preparation method, "ultrasound-assisted emulsification microextraction" (USAEME) with manual shaking, coupled with gas chromatography using and an electron capture detector (GC-ECD) was developed for the analysis of organochlorine pesticides (OCPs) in aqueous samples. The apparatus is simple and easy to operate. After manual shaking for 10s, ultrasound was used to accelerate emulsification of the organic solvent (1-decanol) in aqueous solution. Only 10 muL of the low-toxicity extraction solvent is used in this method; no dispersive solvent is required and the total extraction time is approximately 4 min. Manual shaking before ultrasound-assisted emulsification enhances the extraction efficiency by >100%. The effects of horizontal and vertical orientation as well as the location of the sample within the ultrasonic bath were studied. After centrifugation, we used an improved solvent collection system (ISCS) to reduce the amount of extraction solvent required. A 1 muL sample of the extract was injected into the GC column. Under optimum conditions, the linear range of the method is 5-2500 ngL(-1) for most of the OCPs, and the limit of detection of the method ranged from 0.6 to 2.9 ngL(-1).The relative recoveries ranged from 75 to 107% for sea water and from 70 to 99% for field fresh water. The method, which provides good enrichment factors, low LODs and minimization of the consumption of organic solvent, provides a rapid, simple and environment-friendly procedure for determining OCPs in aqueous samples.
Descriptors
Links
Book Title
Database
Publisher
Elsevier B.V
Data Source
Authors
Wei,S.Y., Leong,M.I., Li,Y., Huang,S.D.
Original/Translated Title
URL
Date of Electronic
20111103
PMCID
Editors
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