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Showing 1-30 of 2113 results for "57301" within Papers
Idaira Pacheco-Fernández et al.
Talanta, 158, 125-133 (2016-06-28)
Several crosslinked polymeric ionic liquid (PIL)-based sorbent coatings of different nature were prepared by UV polymerization onto nitinol wires. They were evaluated in a direct-immersion solid-phase microextraction (DI-SPME) method in combination with high-performance liquid chromatography (HPLC) and diode array detection
Matyas Ripszam et al.
Environmental toxicology and chemistry, 34(2), 266-274 (2014-11-14)
Dissolved organic carbon (DOC) plays a key role in determining the environmental fate of semivolatile organic environmental contaminants. The goal of the present study was to develop a method using commercially available hardware to rapidly characterize the sorption properties of
Mohammad Saraji et al.
Journal of separation science, 39(18), 3616-3623 (2016-07-28)
We report on the fabrication of a thin-film composite for the extraction of bisphenol A from aqueous solutions. Nylon-6, C18 particles, and polyethylene glycol were used to prepare the thin film sorbent. Bisphenol A was used as a model compound
Maryam Lashgari et al.
Journal of chromatography. A, 1369, 26-32 (2014-12-03)
In the current study, a simple, fast and efficient combination of protein precipitation and micro-solid phase extraction (μ-SPE) followed by liquid chromatography-triple quadrupole tandem mass spectrometry (LC-MS/MS) was developed for the determination of perfluorinated carboxylic acids (PFCAs) in fish fillet.
Tingting Hong et al.
Analytica chimica acta, 931, 1-24 (2016-06-11)
Novel column technologies involving various materials and efficient reactions have been investigated for the fabrication of monolithic capillary columns in the field of analytical chemistry. In addition to the development of these miniaturized systems, a variety of microscale separation applications
Weiya Zhang et al.
Analytical chemistry, 81(8), 2912-2920 (2009-04-15)
Single-walled carbon nanotubes (SWNTs) were functionalized with a hydroxyl-terminated silicone oil (TSO-OH). It is synthesized by the reactions of carbonyl chloride groups on the surface of SWNTs and hydroxyl groups of silicone oil (TSO-OH). The functionalized product SWNTs-TSO-OH was first
Xialin Luo et al.
Talanta, 165, 377-383 (2017-02-06)
In this work, a novel NH
Łukasz Marcinkowski et al.
Analytical and bioanalytical chemistry, 407(4), 1205-1215 (2014-11-25)
Commercially available solid-phase microextraction fibers used for isolation of polar analytes are based on the adsorption phenomenon. In consequence, typical limitations bonded with analytes displacement and matrix effects are very frequent. In the present study, alternative solution is described. Polycaprolactone
Paola Bocchini et al.
Environmental monitoring and assessment, 187(6), 320-320 (2015-05-06)
Dimethyl fumarate (DMF) is a chemical compound which has been added to silica gel bags used for preserving leather products during shipment. DMF has recently been singled out due to its ability to induce a number of medical problems in
Yanan Bu et al.
Journal of chromatography. A, 1517, 203-208 (2017-08-28)
Aerogels have received considerable attentions because of its porous, high specific surface, unique properties and environmental friendliness. In this work, an organically modified silica aerogel was functionalized on the basalt fibers (BFs) and filled into a poly(ether ether ketone) (PEEK)
Sonia Bahrani et al.
Ultrasonics sonochemistry, 34, 317-324 (2016-10-25)
The present research focus on designing an appropriate dispersive solid-phase microextraction (UA-DSPME) for preconcentration and determination of Eriochrome Cyanine R (ECR) in aqueous solutions with aid of sonication using lead (II) dioxide nanoparticles loaded on activated carbon (PbO-NPs-AC). This material
Ezzat Naddaf et al.
Journal of separation science, 38(13), 2348-2356 (2015-05-02)
A sensitive technique to determinate naproxen in hair samples was developed using hollow-fiber micro-solid-phase combined with fluorescence spectrophotometry. The incorporation of multi-walled carbon nanotubes modified with a Keggin polyoxometalate into a silica matrix prepared by the sol-gel method was reported.
Jing-Ru Zhang et al.
Zhongguo Zhong yao za zhi = Zhongguo zhongyao zazhi = China journal of Chinese materia medica, 41(23), 4340-4343 (2017-09-22)
Volatile components of Lonicerae Japonicae Flos in bud stage extended type Beihua 1 were determined by the headspace solid-phase micro-extraction, compared with traditional cultivar Damaohua. There are fifty-two volatile compounds were identified and the relative content of the volatiles was
O López-Pérez et al.
Food research international (Ottawa, Ont.), 99(Pt 3), 1002-1010 (2017-09-04)
The volatile fraction of dehydrated edible seaweeds belonging to seven species (Himanthalia elongata, Laminaria ochroleuca, Palmaria palmata, Porphyra umbilicalis, Saccharina latissima, Ulva lactuca and Undaria pinnatifida) was analyzed by gas chromatography-mass spectrometry, after solid-phase microextraction of samples. Thirty-six hydrocarbons, 34
Ezel Boyacı et al.
Scientific reports, 8(1), 1167-1167 (2018-01-20)
In vitro high-throughput non-depletive quantitation of chemicals in biofluids is of growing interest in many areas. Some of the challenges facing researchers include the limited volume of biofluids, rapid and high-throughput sampling requirements, and the lack of reliable methods. Coupled
Min Liu et al.
Food chemistry, 176, 12-16 (2015-01-28)
A novel space-resolved solid phase microextraction (SR-SPME) technique was developed to facilitate simultaneously analyte monitoring within heterogeneous samples. Graphene (G) and graphene oxide (GO) were coated separately to the segmented fibers which were successfully used for the solid-phase microextraction of
ZnO nanorod array solid phase micro-extraction fiber coating: fabrication and extraction capability.
Dan Wang et al.
Nanotechnology, 20(46), 465702-465702 (2009-10-22)
In this paper, a ZnO nanorod array has been introduced as a coating to the headspace solid phase micro-extraction (HSSPME) field. The coating shows good extraction capability for volatile organic compounds (VOCs) by use of BTEX as a standard and
Yonghao Niu et al.
Journal of the science of food and agriculture, 96(5), 1697-1703 (2015-05-29)
Volatile organic compounds (VOCs) contribute significantly to food flavour and can be used as indicators of quality, age of storage, and hygiene condition of stored products. The VOCs in the headspace of three different samples - healthy wheat, Rhyzopertha dominica
Simple Analysis of 5 Thinner Components in Human-Body Fluids by Headspace SPME
Lee, X., et al.
The Journal of Legal Medicine, 107 (6), 310-313 (1995)
Determination of Tobacco Alkaloids Using SPME and GC-NPD
Yang, S.; Smetena, I.
Chromatographia, 47 (7-8), 443-448 (1998)
Roger W R Shannon et al.
Annals of botany, 117(6), 1073-1082 (2016-03-25)
Mounting concerns about balancing food security with the environmental impacts of agro-chemical use underpin the need to better understand the mechanisms by which crop plants, particularly during the vulnerable seedling stage, attract or repel herbivores. The feeding preferences of the
Sylvie Ducki et al.
Talanta, 74(5), 1166-1174 (2008-03-29)
The aroma profile of cocoa products was investigated by headspace solid-phase micro-extraction (HS-SPME) combined with gas chromatography-mass spectrometry (GC-MS). SPME fibers coated with 100 microm polydimethylsiloxane coating (PDMS), 65 microm polydimethylsiloxane/divinylbenzene coating (PDMS-DVB), 75 microm carboxen/polydimethylsiloxane coating (CAR-PDMS) and 50/30
Initial study of three different pathogenic microorganisms by gas chromatography-mass spectrometry.
Najmeh Karami et al.
F1000Research, 6, 1415-1415 (2018-02-03)
Aleksandra Bojke et al.
Microbiological research, 214, 129-136 (2018-07-23)
Entomopathogenic fungi are fungal species which are used as a potential source of biopesticides. These fungi produce secondary metabolites which in insects can cause disruption in the normal functioning of their bodies, disease or even death. In order to fully
Simone B Soso et al.
Scientific reports, 7(1), 5137-5137 (2017-07-13)
Lions (Panthera leo) use chemical signaling to indicate health, reproductive status, and territorial ownership. To date, no study has reported on both scent and composition of marking fluid (MF) from P. leo. The objectives of this study were to: 1)
Piotr M Kuś et al.
Food research international (Ottawa, Ont.), 106, 243-253 (2018-03-28)
Phacelia tanacetifolia Benth. honey (14 samples) collected in Poland was characterized by melissopalynological analysis, color determination (CIE L*a*b*C
Elham Aslankoohi et al.
PloS one, 11(10), e0165126-e0165126 (2016-10-25)
Saccharomyces cerevisiae is routinely used yeast in food fermentations because it combines several key traits, including fermentation efficiency and production of desirable flavors. However, the dominance of S. cerevisiae in industrial fermentations limits the diversity in the aroma profiles of
Behzad Heibati et al.
Ecotoxicology and environmental safety, 149, 19-25 (2017-11-18)
Elevated emissions of volatile organic compounds, including benzene, toluene, ethylbenzene, and o, p, and m-xylenes (BTEX), are an occupational health concern at oil transfer stations. This exploratory study investigated personal exposure to BTEX through environmental air and urine samples collected
Drug detection in breath: effects of pulmonary blood flow and cardiac output on propofol exhalation.
Svend Kamysek et al.
Analytical and bioanalytical chemistry, 401(7), 2093-2102 (2011-06-07)
Breath analysis could offer a non-invasive means of intravenous drug monitoring if robust correlations between drug concentrations in breath and blood can be established. In this study, propofol blood and breath concentrations were determined in an animal model under varying
Piotr Marek Kuś et al.
Food additives & contaminants. Part A, Chemistry, analysis, control, exposure & risk assessment, 32(11), 1761-1771 (2015-09-15)
The volatile composition of 21 herbhoneys (HHs) of 7 different botanical origins was characterised for the first time. Ultrasound solvent extraction (USE) and headspace solid-phase microextraction (HS-SPME) followed by GC-FID/MS were successfully applied as complementary methods for monitoring the volatile
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