Image
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 Sort descending | Pub Year | Author | SearchLink |
|---|---|---|---|
| Antifungal susceptibility of Candida isolates at one institution | 2014 | National Cerebral and Cardiovascular Center. | Read more... |
|
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Medical mycology journal
Periodical, Abbrev.
Med.Mycol.J.
Pub Date Free Form
Volume
55
Issue
1
Start Page
E1
Other Pages
7
Notes
JID: 101562838; 0 (Antifungal Agents); 0 (Echinocandins); 0 (Lipopeptides); 304NUG5GF4 (Itraconazole); 7XU7A7DROE (Amphotericin B); 8VZV102JFY (Fluconazole); D83282DT06 (Flucytosine); JFU09I87TR (Voriconazole); R10H71BSWG (micafungin); ppublish
Place of Publication
Japan
ISSN/ISBN
1882-0476
Accession Number
PMID: 24682093
Language
eng
SubFile
Journal Article; IM
DOI
DN/JST.JSTAGE/mmj/55.E1 [pii]
Output Language
Unknown(0)
PMID
24682093
Abstract
Species distribution and antifungal susceptibility of Candida isolates at one institution were evaluated. Detection rates of fungi were examined for 5 years between 2007 and 2011. Sensitivities of fungi to amphotericin B, flucytosine, fluconazole, micafungin, itraconazole, and voriconazole were evaluated in blood culture-positive patients. A total of 3,832 fungal isolates were detected, including Candida albicans 66.5%, Candida glabrata 20.3%, Candida parapsilosis 6.2%, Candida tropicalis 5.5%, and others 1.5%. Candidemia was diagnosed in 131 patients, and C. albicans, C. parapsilosis, C. glabrata, C. tropicalis, and others were present in 42.0%, 27.5%, 16.0%, 8.4%, and 6.1% of these patients, respectively. Voriconazole had the lowest MIC90s against C. albicans and C. parapsilosis (0.015 and 0.25). Micafungin had a low MIC90 against C. glabrata and C. tropicalis. C. albicans was the most common fungus in patients with candidemia. Voriconazole and micafungin were effective against C. albicans. Amphotericin B was effective for C. parapsilosis, and micafungin showed good efficacy against C. glabrata and C. tropicalis.
Descriptors
Links
Book Title
Database
Publisher
Data Source
Authors
Katsuragi,S., Sata,M., Kobayashi,Y., Miyoshi,T., Yamashita,Y., Neki,R., Horiuchi,C., Yamanaka,K., Kamiya,C., Iwanaga,N., Tanaka,H., Ikeda,T., Yoshimatsu,J.
Original/Translated Title
URL
Date of Electronic
PMCID
Editors
|
|||
| Antifungal susceptibility to amphotericin B, fluconazole, voriconazole, and flucytosine in Candida bloodstream isolates from 15 tertiary hospitals in Korea | 2012 | Department of Internal Medicine, Chonnam National University Medical School, Gwangju, Korea. | Read more... |
|
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Annals of laboratory medicine
Periodical, Abbrev.
Ann.Lab.Med.
Pub Date Free Form
Nov
Volume
32
Issue
6
Start Page
426
Other Pages
428
Notes
LR: 20150222; JID: 101571172; 0 (Antifungal Agents); 0 (Pyrimidines); 0 (Triazoles); 7XU7A7DROE (Amphotericin B); 8VZV102JFY (Fluconazole); D83282DT06 (Flucytosine); JFU09I87TR (Voriconazole); OID: NLM: PMC3486937; OTO: NOTNLM; 2012/06/07 [received]; 2012
Place of Publication
Korea (South)
ISSN/ISBN
2234-3814; 2234-3806
Accession Number
PMID: 23130342
Language
eng
SubFile
Journal Article; Research Support, Non-U.S. Gov't; IM
DOI
10.3343/alm.2012.32.6.426 [doi]
Output Language
Unknown(0)
PMID
23130342
Abstract
The in vitro antifungal susceptibility of 636 Candida bloodstream isolates collected from 15 tertiary hospitals in Korea was determined using the Vitek-2 yeast susceptibility system (bioMerieux, France). Overall susceptibility rates were 98.1%, 95.9%, 99.1%, and 97.3% for amphotericin B, fluconazole, voriconazole, and flucytosine, respectively. The results show that the rates of resistance to 4 antifungal drugs remain low among Candida bloodstream isolates in Korea.
Descriptors
Links
Book Title
Database
Publisher
Data Source
Authors
Jung,S.I., Shin,J.H., Choi,H.J., Ju,M.Y., Kim,S.H., Lee,W.G., Park,Y.J., Lee,K., Korean Study Group for Candidemia
Original/Translated Title
URL
Date of Electronic
20121017
PMCID
PMC3486937
Editors
|
|||
| Antioxidant activity and cytotoxicity study of the flavonol glycosides from Bauhinia galpinii | 2007 | Department of Chemistry, Obafemi Awolowo University, Ile-Ife, Nigeria. marogba@oauife.edu.ng | Read more... |
|
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Natural product research
Periodical, Abbrev.
Nat.Prod.Res.
Pub Date Free Form
Jun
Volume
21
Issue
7
Start Page
591
Other Pages
599
Notes
LR: 20091119; JID: 101167924; 0 (Antioxidants); 0 (Biphenyl Compounds); 0 (Flavonols); 0 (Formazans); 0 (Glycosides); 0 (Hydrazines); 0 (Picrates); 0 (Tetrazolium Salts); 1898-66-4 (2,2-diphenyl-1-picrylhydrazyl); 23305-68-2 (MTT formazan); ppublish
Place of Publication
England
ISSN/ISBN
1478-6419; 1478-6419
Accession Number
PMID: 17613816
Language
eng
SubFile
Journal Article; Research Support, Non-U.S. Gov't; IM
DOI
779728379 [pii]
Output Language
Unknown(0)
PMID
17613816
Abstract
The antioxidant activity of the crude extract and solvent fractions obtained from the leaves of Bauhinia galpinii was evaluated in terms of capacity to scavenge 2,2-diphenyl-1-picrylhydrazyl (DPPH) free radicals. The crude extract and the more polar solvent fractions (ethyl acetate and butanol) showed considerable antioxidant activity. The antioxidant potential of the extracts, expressed as EC50, ranged between 28.85 +/- 1.28 microg mL(-1)and 118.16 +/- 6.41 microg mL(-1). L-Ascorbic acid was used as a standard (EC50 = 19.79 +/- 0.14 microM). Bioassay guided fractionation of the two active solvent fractions led to the isolation of three flavonoid glycosides, identified as: quercetin-3-O-galactopyranoside (1), myricetin-3-O-galactopyranoside (2), and 2''-O-rhamnosylvitexin (3). These compounds are reported for the first time from this species. The structures of the compounds were determined on the basis of spectral studies (1H NMR, 13C NMR and MS). Their antioxidant potential was evaluated using a DPPH spectrophotometric assay. Compound 2 had higher and 3 had lower antioxidant activity than L-ascorbic acid. No cytotoxic effects were displayed by compounds 1 and 3, but compound 2 was cytotoxic to Vero cells (LC50 = 74.68 microg mL(-1)) and bovine dermis cells (LC50 = 30.69 microg mL(-1)).
Descriptors
Animals, Antioxidants/chemistry/isolation & purification/pharmacology, Bauhinia/chemistry, Biphenyl Compounds/chemistry, Cattle, Cell Survival/drug effects, Cercopithecus aethiops, Flavonols/chemistry/isolation & purification/pharmacology, Formazans/metabolism, Glycosides/chemistry/isolation & purification/pharmacology, Hydrazines/chemistry, Mass Spectrometry, Nuclear Magnetic Resonance, Biomolecular, Picrates, Plant Leaves/chemistry, Plants, Medicinal/chemistry, Skin/cytology/drug effects, South Africa, Spectrophotometry, Ultraviolet, Tetrazolium Salts/metabolism, Vero Cells
Links
Book Title
Database
Publisher
Data Source
Authors
Aderogba,M. A., McGaw,L. J., Ogundaini,A. O., Eloff,J. N.
Original/Translated Title
URL
Date of Electronic
PMCID
Editors
|
|||
| Antiviral activity of four types of bioflavonoid against dengue virus type-2 | 2011 | Tropical Infectious Disease Research and Education Center (TIDREC), Department of Medical Microbiology, University of Malaya, Kuala Lumpur, Malaysia. | Read more... |
|
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Virology journal
Periodical, Abbrev.
Virol.J.
Pub Date Free Form
28-Dec
Volume
8
Issue
Start Page
560
Other Pages
422X-8-560
Notes
LR: 20151119; JID: 101231645; 0 (Antiviral Agents); 0 (Flavanones); 0 (Flavonoids); 0 (RNA, Viral); 9IKM0I5T1E (Quercetin); E750O06Y6O (Hesperidin); N7TD9J649B (naringin); OO2ABO9578 (fisetin); Q9Q3D557F1 (hesperetin); OID: NLM: PMC3271998; 2011/09/11 [re
Place of Publication
England
ISSN/ISBN
1743-422X; 1743-422X
Accession Number
PMID: 22201648
Language
eng
SubFile
Journal Article; Research Support, Non-U.S. Gov't; IM
DOI
10.1186/1743-422X-8-560 [doi]
Output Language
Unknown(0)
PMID
22201648
Abstract
BACKGROUND: Dengue is a major mosquito-borne disease currently with no effective antiviral or vaccine available. Effort to find antivirals for it has focused on bioflavonoids, a plant-derived polyphenolic compounds with many potential health benefits. In the present study, antiviral activity of four types of bioflavonoid against dengue virus type -2 (DENV-2) in Vero cell was evaluated. Anti-dengue activity of these compounds was determined at different stages of DENV-2 infection and replication cycle. DENV replication was measured by Foci Forming Unit Reduction Assay (FFURA) and quantitative RT-PCR. Selectivity Index value (SI) was determined as the ratio of cytotoxic concentration 50 (CC50) to inhibitory concentration 50 (IC50) for each compound. RESULTS: The half maximal inhibitory concentration (IC50) of quercetin against dengue virus was 35.7 mug mL-1 when it was used after virus adsorption to the cells. The IC50 decreased to 28.9 mug mL-1 when the cells were treated continuously for 5 h before virus infection and up to 4 days post-infection. The SI values for quercetin were 7.07 and 8.74 mug mL-1, respectively, the highest compared to all bioflavonoids studied. Naringin only exhibited anti-adsorption effects against DENV-2 with IC50 = 168.2 mug mL-1 and its related SI was 1.3. Daidzein showed a weak anti-dengue activity with IC50 = 142.6 mug mL-1 when the DENV-2 infected cells were treated after virus adsorption. The SI value for this compound was 1.03. Hesperetin did not exhibit any antiviral activity against DENV-2. The findings obtained from Foci Forming Unit Reduction Assay (FFURA) were corroborated by findings of the qRT-PCR assays. Quercetin and daidzein (50 mug mL-1) reduced DENV-2 RNA levels by 67% and 25%, respectively. There was no significant inhibition of DENV-2 RNA levels with naringin and hesperetin. CONCLUSION: Results from the study suggest that only quercetin demonstrated significant anti-DENV-2 inhibitory activities. Other bioflavonoids, including daidzein, naringin and hesperetin showed minimal to no significant inhibition of DENV-2 virus replication. These findings, together with those previously reported suggest that select group of bioflavonoids including quercetin and fisetin, exhibited significant inhibitory activities against dengue virus. This group of flavonoids, flavonol, could be investigated further to discover the common mechanisms of inhibition of dengue virus replication.
Descriptors
Links
Book Title
Database
Publisher
Data Source
Authors
Zandi,K., Teoh,B.T., Sam,S.S., Wong,P.F., Mustafa,M.R., Abubakar,S.
Original/Translated Title
URL
Date of Electronic
20111228
PMCID
PMC3271998
Editors
|
|||
| Anxiety diagnoses in smokers seeking cessation treatment: relations with tobacco dependence, withdrawal, outcome and response to treatment | 2011 | Center for Tobacco Research and Intervention, University of Wisconsin School of Medicine and Public Health, Madison, WI 53711, USA. mep@ctri.medicine.wisc.edu | Read more... |
|
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Addiction (Abingdon, England)
Periodical, Abbrev.
Addiction
Pub Date Free Form
Feb
Volume
106
Issue
2
Start Page
418
Other Pages
427
Notes
LR: 20151119; CI: (c) 2010 The Authors, Addiction (c) 2010; GR: 1K05CA139871/CA/NCI NIH HHS/United States; GR: 1KL2RR025012-01/RR/NCRR NIH HHS/United States; GR: K05 CA139871/CA/NCI NIH HHS/United States; GR: K05 CA139871-04/CA/NCI NIH HHS/United States;
Place of Publication
England
ISSN/ISBN
1360-0443; 0965-2140
Accession Number
PMID: 20973856
Language
eng
SubFile
Journal Article; Multicenter Study; Randomized Controlled Trial; Research Support, N.I.H., Extramural; IM
DOI
10.1111/j.1360-0443.2010.03173.x [doi]
Output Language
Unknown(0)
PMID
20973856
Abstract
AIMS: To understand the relations among anxiety disorders and tobacco dependence, withdrawal symptoms, response to smoking cessation pharmacotherapy and ability to quit smoking. DESIGN: Randomized placebo-controlled clinical trial. Participants received six 10-minute individual counseling sessions and either: placebo, bupropion SR, nicotine patch, nicotine lozenge, bupropion SR + nicotine lozenge or nicotine patch + nicotine lozenge. SETTING: Two urban research sites. PARTICIPANTS: Data were collected from 1504 daily smokers (>9 cigarettes per day) who were motivated to quit smoking and did not report current diagnoses of schizophrenia or psychosis or bupropion use. MEASUREMENTS: Participants completed baseline assessments, the Composite International Diagnostic Interview and ecological momentary assessments for 2 weeks. FINDINGS: A structured clinical interview identified participants who ever met criteria for a panic attack (n = 455), social anxiety (n = 199) or generalized anxiety disorder (n = 99), and those who qualified for no anxiety diagnosis (n = 891). Smokers with anxiety disorders reported higher levels of nicotine dependence and pre-quit withdrawal symptoms. Those ever meeting criteria for panic attacks or social anxiety disorder showed greater quit-day negative affect. Smokers ever meeting criteria for anxiety disorders were less likely to be abstinent at 8 weeks and 6 months post-quit and showed no benefit from single-agent or combination-agent pharmacotherapies. CONCLUSIONS: Anxiety diagnoses were common among treatment-seeking smokers and were related to increased motivation to smoke, elevated withdrawal, lack of response to pharmacotherapy and impaired ability to quit smoking. These findings could guide treatment assignment algorithms and treatment development for smokers with anxiety diagnoses.
Descriptors
Links
Book Title
Database
Publisher
Society for the Study of Addiction
Data Source
Authors
Piper,M.E., Cook,J.W., Schlam,T.R., Jorenby,D.E., Baker,T.B.
Original/Translated Title
URL
Date of Electronic
20101025
PMCID
PMC3017215
Editors
|
|||
| Any tobacco use in 13 States --- behavioral risk factor surveillance system, 2008 | 2010 | Read more... | |
|
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
MMWR.Morbidity and mortality weekly report
Periodical, Abbrev.
MMWR Morb.Mortal.Wkly.Rep.
Pub Date Free Form
6-Aug
Volume
59
Issue
30
Start Page
946
Other Pages
950
Notes
JID: 7802429; ppublish
Place of Publication
United States
ISSN/ISBN
1545-861X; 0149-2195
Accession Number
PMID: 20689499
Language
eng
SubFile
Journal Article; IM
DOI
mm5930a3 [pii]
Output Language
Unknown(0)
PMID
20689499
Abstract
Tobacco use is the leading cause of preventable death in the United States, and cigarette smoking, the predominant form of tobacco use in the United States, causes 443,000 deaths annually. In 2008, 20.6% of U.S. adults were current smokers; however, other tobacco products (e.g., smokeless tobacco, cigars, bidis, and kreteks) also were used by some adults and youths. Persons who use cigarettes in combination with other tobacco products (polytobacco use) might have an in increased risk for adverse health effects. To estimate the prevalence of any tobacco and polytobacco use, CDC analyzed data from the 2008 Behavioral Risk Factor Surveillance System (BRFSS) (the most recent data available) module on use of other tobacco products, which was implemented by 13 states. This analysis found that use of any tobacco product ranged from 18.4% (New Jersey) to 35.0% (West Virginia), cigarette use ranged from 14.6% (New Jersey) to 26.6% (West Virginia), and polytobacco use ranged from 1.0% (New Jersey) to 3.7% (West Virginia). Polytobacco use was more prevalent among men (4.4%), persons aged 18--24 years (5.7%), persons who were single (4.8%), persons with household incomes less than $35,000 (9.8%), and persons with less than a high school education (3.6%) or with a high school diploma or General Education Development (GED) certificate or diploma (3.6%). Because no form of tobacco is safe to use, prevention and cessation intervention programs need to address all forms of tobacco use to lower tobacco-related morbidity and mortality in the United States. Additionally, counter-marketing messages for tobacco products can be tailored for specific populations, such as young adults and males.
Descriptors
Adolescent, Adult, Advertising as Topic, African Continental Ancestry Group, Age Factors, Aged, Behavioral Risk Factor Surveillance System, Educational Status, Female, Hispanic Americans, Humans, Income, Male, Middle Aged, Prevalence, Smoking/epidemiology/ethnology/prevention & control, Tobacco Industry, Tobacco, Smokeless, United States/epidemiology, Young Adult
Links
Book Title
Database
Publisher
Data Source
Authors
Centers for Disease Control and Prevention (CDC)
Original/Translated Title
URL
Date of Electronic
PMCID
Editors
|
|||
| Application of a new parameter in the 6-minute walk test for manifold analysis of exercise capacity in patients with COPD | 2014 | Department of Respiratory Medicine, Graduate School of Medicine, Osaka City University, Osaka, Japan.; Department of Respiratory Medicine, Graduate School of Medicine, Osaka City University, Osaka, Japan.; Department of Sports Medicine, Graduate School of | Read more... |
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Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
International journal of chronic obstructive pulmonary disease
Periodical, Abbrev.
Int.J.Chron.Obstruct Pulmon Dis.
Pub Date Free Form
3-Nov
Volume
9
Issue
Start Page
1235
Other Pages
1240
Notes
LR: 20151119; JID: 101273481; 0 (Biomarkers); S88TT14065 (Oxygen); OID: NLM: PMC4224096; OTO: NOTNLM; 2014 [ecollection]; 2014/11/03 [epublish]; epublish
Place of Publication
New Zealand
ISSN/ISBN
1178-2005; 1176-9106
Accession Number
PMID: 25395845
Language
eng
SubFile
Journal Article; IM
DOI
10.2147/COPD.S71383 [doi]
Output Language
Unknown(0)
PMID
25395845
Abstract
BACKGROUND: New parameters in the 6-minute walk test (6 MWT) are required for comprehensive analysis of exercise capacity in patients with chronic obstructive pulmonary disease (COPD). The aim of the present study was to apply a novel index, the desaturation distance ratio (DDR), to clinical research on COPD as an estimate of exercise capacity and to examine whether DDR is a potential parameter for manifold analysis of exercise capacity in patients with COPD. METHODS: A total of 41 patients with COPD (median age [interquartile range] =75 [68-79] years; and body mass index [BMI] =22.3 [19.4-23.8] kg/m(2)) participated in the study. The 6 MWT was performed along with anthropometric measurements and a pulmonary function test. The "desaturation area" was measured as the total area above the curve created using peripheral oxygen saturation (SpO2) values observed at each minute during the 6 MWT. Then the DDR was calculated as the ratio of the desaturation area to the 6-minute walk distance (6 MWD). RESULTS: The 6 MWD was 370 (328-445) m, and the decline in SpO2 values (DeltaSpO2) was -5.0% (-8.0% to -1.5%). The DDR correlated modestly with baseline pulmonary function in patients with COPD (forced expiratory volume in 1 second [% of predicted value]: r=-0.658, P
Descriptors
Links
Book Title
Database
Publisher
Data Source
Authors
Ijiri,N., Kanazawa,H., Yoshikawa,T., Hirata,K.
Original/Translated Title
URL
Date of Electronic
20141103
PMCID
PMC4224096
Editors
|
|||
| Application of an ozone disinfection apparatus for small drinking water supply systems in rural areas | 2002 | Sun, X., Office of Beijing Municipal Commission for Patriotic Health Campaign, Beijing 100053, China. | Read more... |
|
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Wei sheng yan jiu = Journal of hygiene research
Periodical, Abbrev.
Wei Sheng Yan Jiu
Pub Date Free Form
/
Volume
31
Issue
5
Start Page
386
Other Pages
388
Notes
Place of Publication
ISSN/ISBN
1000-8020
Accession Number
Language
SubFile
DOI
Output Language
Unknown(0)
PMID
Abstract
To design an ozone disinfection apparatus which is inexpensive and to practical for small drinking water supply system in rural areas. And test its effectiveness. Designed apparatus must be rapid, low cost, high automatic and easy for operation. The key technologies are to create ozone of high concentration and to mix it with water very well, and add it into main water pipe automatically. The results showed: In laboratory, at the condition of ozone of 0.2 mg/l for 3 minutes, all germs and bacteria coli were killed. In the field study, the water samples from three villages met the standard for drinking water very well. THE CONCLUSIONS: The apparatus reached the design requirement. An innovative part of the study is that we have improved a device for mixture of ozone with water. The laboratory and field study have proved the apparatus is low cost, high effectiveness, and easy to operate u. It is very useful for small drinking water supply system in rural areas.
Descriptors
ozone, article, disinfection, health, devices, microbiology, water management, water pollution, water supply
Links
Book Title
Database
MEDLINE
Publisher
Data Source
Embase
Authors
Sun,X., Liu,Y., Wang,L., Zhang,J.
Original/Translated Title
URL
Date of Electronic
PMCID
Editors
|
|||
| Application of beta-cyclodextrin-modified, carbon nanotube-reinforced hollow fiber to solid-phase microextraction of plant hormones | 2014 | Key Laboratory of Chemistry of Northwestern Plant Resources of the CAS and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, PR China; University of Chinese Academy o | 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
29-Dec
Volume
1374
Issue
Start Page
23
Other Pages
30
Notes
LR: 20151119; CI: Copyright (c) 2014; JID: 9318488; 0 (Glycolates); 0 (Nanotubes, Carbon); 0 (Naphthaleneacetic Acids); 0 (Plant Growth Regulators); 0 (beta-Cyclodextrins); 33T7G7757C (1-naphthaleneacetic acid); 717GVR334R (2-naphthoxyacetic acid); JV039J
Place of Publication
Netherlands
ISSN/ISBN
1873-3778; 0021-9673
Accession Number
PMID: 25435464
Language
eng
SubFile
Journal Article; Research Support, Non-U.S. Gov't; IM
DOI
10.1016/j.chroma.2014.11.029 [doi]
Output Language
Unknown(0)
PMID
25435464
Abstract
A new, efficient, and environmental friendly solid-phase microextraction (SPME) medium based on beta-cyclodextrin (beta-CD)-modified carbon nanotubes (CNTs) and a hollow fiber (HF) was prepared. Functionalized beta-CD was covalently linked to the surface of the carboxylic CNTs and then the obtained nanocomposite was immobilized into the wall pores of HFs under ultrasonic-assisted effect. The scanning electron microscope was used to inspect surface characteristics of fibers, demonstrating the presence of nanocomposites in their wall pores. The reinforced HF was employed in SPME, and its extraction performance was evaluated by analyzing 1-naphthaleneacetic acid (NAA) and 2-naphthoxyacetic acid (2-NOA) in vegetables. Without any tedious clean-up procedure, analytes were extracted from the sample to the adsorbent and organic solvent immobilized in HFs and then desorbed in acetonitrile prior to chromatographic analysis. Under the optimized extraction conditions, the method provided 275- and 283-fold enrichment factors of NAA and 2-NOA, low limits of detection and quantification (at an ngg(-1) level), satisfactory spiked recoveries, good inter-fiber repeatability, and batch-to-batch reproducibility. The selectivity of the developed fiber was investigated to three structurally similar compounds and two reference compounds with recognition coefficients up to 3.18. The obtained results indicate that the newly developed fiber is a feasible, selective, green, and cost-effective microextraction medium and could be successfully applied for extraction and determination of naphthalene-derived plant hormones in complex matrices.
Descriptors
Links
Book Title
Database
Publisher
Elsevier B.V
Data Source
Authors
Song,X.Y., Ha,W., Chen,J., Shi,Y.P.
Original/Translated Title
URL
Date of Electronic
20141118
PMCID
Editors
|
|||
| Application of chemometric assisted dispersive liquid-liquid microextraction to the determination of personal care products in natural waters | 2009 | Department of Chemistry, University of Ioannina, Ioannina 45110, Greece. | Read more... |
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Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Analytica Chimica Acta
Periodical, Abbrev.
Anal.Chim.Acta
Pub Date Free Form
7-Sep
Volume
649
Issue
2
Start Page
135
Other Pages
140
Notes
LR: 20121115; JID: 0370534; 0 (Phthalic Acids); 0 (Polycyclic Compounds); 0 (Solvents); 0 (Water Pollutants, Chemical); 6O7F7IX66E (phthalic acid); 2009/05/28 [received]; 2009/07/07 [revised]; 2009/07/09 [accepted]; 2009/07/14 [aheadofprint]; ppublish
Place of Publication
Netherlands
ISSN/ISBN
1873-4324; 0003-2670
Accession Number
PMID: 19699389
Language
eng
SubFile
Journal Article; IM
DOI
10.1016/j.aca.2009.07.028 [doi]
Output Language
Unknown(0)
PMID
19699389
Abstract
A rapid and simple method for the determination of two phthalates and five polycyclic musks in water samples using dispersive liquid-liquid microextraction (DLLME) mated to chemometrics and coupled to GC-MS was developed. Volume of extraction (CCl4) and disperser solvent (MeOH), pH, ionic strength, extraction time, centrifugation time as well as centrifugation speed were optimized in a 2(7-4) Plackett-Burman design. The obtained significant factors were optimized by using a central composite design (CCD) and the quadratic model between the dependent and the independent variables was built. The optimum experimental conditions of the proposed method were: 250 microL carbon tetrachloride, 0.62 mL methanol, 7.5 min centrifugation time, natural pH containing 0% (w/v) NaCl, while keeping centrifugation speed fixed at 4000 rpm. The calculated calibration curves gave high-level linearity for all target analytes with correlation coefficients ranging between 0.9970 and 0.9992. The repeatability and reproducibility of the proposed method, expressed as relative standard deviation, varied between 2.6% to 9.7% and 5.7% to 12.2%, respectively. The obtained LOD values were in the range of 8-63 ng L(-1).
Descriptors
Fresh Water/analysis, Gas Chromatography-Mass Spectrometry/methods, Humans, Hydrogen-Ion Concentration, Osmolar Concentration, Phthalic Acids/analysis/isolation & purification, Polycyclic Compounds/analysis/isolation & purification, Solvents/chemistry, Water Pollutants, Chemical/analysis/isolation & purification
Links
Book Title
Database
Publisher
Data Source
Authors
Panagiotou,A. N., Sakkas,V. A., Albanis,T. A.
Original/Translated Title
URL
Date of Electronic
20090714
PMCID
Editors
|
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