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Showing 31-60 of 2106 results for "504823" within Papers
Maria V Vavoura et al.
Molecules (Basel, Switzerland), 20(2), 1922-1940 (2015-01-30)
Volatile compounds, physicochemical and sensory attributes of four sweet cherry cultivars (Canada giant, Ferrovia, Lapins and Skeena) grown in Northern Greece were determined. Eighteen volatile compounds were identified and semi-quantified in cherries using solid phase micro extraction in combination with
Qingxiang Zhou et al.
Analytica chimica acta, 869, 43-49 (2015-03-31)
Graphene is a good adsorbent for organic pollutants, especially for compounds containing benzene rings. When used in TiO2 nanotube arrays for micro-solid phase extraction (μ-SPE), the combination of graphene's strong adsorptive properties with its good separation capabilities results in excellent
Zhoubing Huang et al.
Talanta, 178, 629-635 (2017-11-16)
The introduction of functional groups into metal organic frameworks has great potential for enhancement in adsorption performance of nitrosamines using solid phase microextraction (SPME). However, pre-functionalization and post-modification generally suffer from the same limitation that the additional functional groups occupy
Meike Paschke et al.
Archives of toxicology, 89(8), 1241-1255 (2015-07-04)
With the revision of the European Tobacco Products Directive (2014/40/EU), characterizing flavors such as strawberry, candy, vanillin or chocolate will be prohibited in cigarettes and fine-cut tobacco. Product surveillance will therefore require analytical means to define and subsequently detect selected
Laura J Nixon et al.
PloS one, 13(1), e0191223-e0191223 (2018-01-18)
The brown marmorated stink bug, Halyomorpha halys, is an agricultural and urban pest that has become widely established as an invasive species of major concern in the USA and across Europe. This species forms large aggregations when entering diapause, and
Laura Mercolini et al.
Phytochemical analysis : PCA, 27(1), 41-49 (2015-09-10)
The argan tree (Argania spinosa) is an endemic species from south-western Morocco. Argan-based preparations have been widely used in Moroccan traditional medicine for their biological properties, as well as for several cosmetic purposes. Whereas kernel, pulp of fruit and trunk
Adrián Gutiérrez-Serpa et al.
Journal of separation science, 40(9), 2009-2021 (2017-03-07)
The use of solid-phase microextraction coatings based on gold nanoparticles was investigated, focusing the attention on the preparation of nanoparticles with nonclassical reduction agents of HAuCl
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
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
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
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)
Maria Celeiro et al.
Analytica chimica acta, 1020, 51-61 (2018-04-16)
A solvent-free method based on solid-phase microextraction (SPME) followed by gas chromatography-tandem mass spectrometry (GC-MS/MS) has been developed for the simultaneous determination of eleven fungicides at trace levels in different types of waters. Several experimental SPME parameters such as temperature
Y Bezman et al.
Journal of agricultural and food chemistry, 49(11), 5425-5432 (2001-11-21)
The occurrence of methional in fresh orange juice, and possible occurrence of beta-damascenone in heated orange juice, has been previously suggested. Here we report on the occurrence of 2-methyl-3-furanthiol in the headspace, collected by solid-phase micro-extraction, of fresh, pasteurized, and
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
Nicolas Kirschner et al.
Analytica chimica acta, 996, 29-37 (2017-11-16)
A sustainable approach to TF-SPME is presented using recycled diatomaceous earth, obtained from a beer purification process, as a green sorbent phase for the determination of bisphenol A (BPA), benzophenone (BzP), triclocarban (TCC), 4-methylbenzylidene camphor (4-MBC) and 2-ethylhexyl-p-methoxycinnamate (EHMC) in
C Guillard et al.
Water research, 36(17), 4263-4272 (2002-11-08)
Solid-phase micro-extraction has been used for identifying, quantifying and following the evolution of intermediate products of octanol degradation by two advanced oxidation treatments (AOTs), photocatalytic and ultrasound processes, inducing mainly the same active species. Headspace extraction enabled direct extraction of
Jun Song et al.
Food chemistry, 160, 255-259 (2014-05-07)
Analysis of headspace concentrations of diphenylamine using solid phase micro-extraction (SPME) was examined for its suitability to detect DPA contamination and off-gassing in apple (Malus domestica) fruit, storage rooms and storage materials. Four SPME fibre coatings including polydimethylsiloxane (PDMS, 100
Rocío Ríos-Reina et al.
Food research international (Ottawa, Ont.), 105, 880-896 (2018-02-13)
High-quality wine vinegars have been registered in Spain under protected designation of origin (PDO): "Vinagre de Jerez", "Vinagre de Condado de Huelva" and "Vinagre de Montilla-Moriles". The raw material, production and aging processes determine their quality and their aromatic composition.
Jin-Feng Wei et al.
African journal of traditional, complementary, and alternative medicines : AJTCAM, 11(3), 70-75 (2014-11-06)
Lysimachia paridiformis Var. Stenophylla mainly contain flavonoid constituents. Flavonoids and benzoquinones are the main compounds in L. fortumei Maxim. The objective of this paper was to study the volatile compounds of leaves in L. paridiformis Var. Stenophylla, L. fortumei and
Gregor Kos et al.
Environmental science. Processes & impacts, 16(11), 2592-2603 (2014-09-25)
The role of volatile organic compounds (VOC) in the snowpack for atmospheric oxidation, gas-particle transfer and aerosol formation remains poorly understood, partly due to a lack of methodology and unavailable data. We deployed solid phase micro-extraction (SPME) gas chromatography with
H M Al-Saidi et al.
Talanta, 159, 137-142 (2016-07-31)
A simple, low cost and efficient headspace sorptive solid phase microextraction (HS-SPME) method for determination of cyanide has been developed. The system comprises of a glass tube with two valves and a moveable glass slide fixed at its centre. It
Alan Willse et al.
Immunogenetics, 58(12), 967-982 (2006-11-08)
Genes of the major histocompatibility complex (MHC) influence the urinary odors of mice. Behavioral studies have shown (1) that mice differing only at MHC have distinct urinary odors, suggesting an MHC odor phenotype or odortype; (2) that the MHC odortype
Raíssa Bittar Mastello et al.
Food research international (Ottawa, Ont.), 75, 281-288 (2015-09-01)
Odour-active compounds present in pasteurised orange juice were identified by gas chromatography-olfactometry (GC-O) employing heart-cut multidimensional GC techniques with olfactometry (O) and mass spectrometry (H/C MDGC-O/MS) and comprehensive two-dimensional gas chromatography-accurate mass time-of-flight MS (GC×GC-accTOFMS). Headspace solid phase microextraction sampling
F L Cardinali et al.
Journal of chromatographic science, 38(2), 49-54 (2000-03-11)
The analysis of volatile organic compounds (VOCs) in whole human blood at the low parts-per-trillion level has until recently required the use of a high-resolution mass spectrometer to obtain the specificity and detection limits required for epidemiological studies of VOC
Corrigendum to "Gas chromatographic determination of polycyclic aromatic hydrocarbons in water and smoked rice samples after solid-phase microextraction using multiwalled carbon nanotube loaded hollow fiber" [J. Chromatogr. A 1374 (2014) 50-57].
Amir Abbas Matin et al.
Journal of chromatography. A, 1527, 105-105 (2017-11-06)
Marta Mikš-Krajnik et al.
Journal of food science, 81(8), M2006-M2014 (2016-06-23)
Volatile organic compounds (VOCs) as chemical spoilage indexes (CSIs) of raw chicken breast stored aerobically at 4, 10, and 21 °C were identified and quantified using solid phase microextraction (SPME) combined with gas chromatography-mass spectrometry (GC-MS). The growth dynamics of total
Mei-Xia Guo et al.
Huan jing ke xue= Huanjing kexue, 34(8), 3244-3250 (2013-11-07)
In order to demonstrate the variation of bioaccessibility of PAHIs in microbial degradation process, PAH contaminated coking plant soil was remediated using microbial agent, and the bioaccessibility of PAHs was assessed using solid phase micro extraction (SPME) and solid phase
Allison M Curran et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 846(1-2), 86-97 (2006-10-03)
The composition of human scent collected from the hands is of interest to the medical community as a mechanism to diagnose disease and the forensic community as a means to investigate canine scent discriminations. An extensive survey of the volatile
Mahdi Ghorbani et al.
Journal of separation science, 39(6), 1082-1089 (2016-03-31)
A simple, rapid, and sensitive method for the determination of naproxen and ibuprofen in complex biological and water matrices (cow milk, human urine, river, and well water samples) has been developed using ultrasound-assisted magnetic dispersive solid-phase microextraction. Magnetic ethylendiamine-functionalized graphene
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