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Weixuan Yao et al.
Se pu = Chinese journal of chromatography, 33(4), 342-347 (2015-08-22)
A magnetic carbon nanotube hybrid material was prepared using a chemical co-precipitation method. The Fe3O4 nanoparticles were enclosed onto the surface of the acid multi-walled carbon nanotubes (AMWNTs), and they were identified as Fe3O4/AMWNTs composites. This hybrid materials displayed typical
Wen-Hsi Cheng et al.
Journal of environmental science and health. Part A, Toxic/hazardous substances & environmental engineering, 52(12), 1158-1163 (2017-09-19)
The objective of this study was to measure the emission of, and personal exposure to workers, volatile organic compound (VOC) during paint spraying on a construction site. Needle trap samplers (NTSs), which are a green solid phase microextraction sampling technology
Maiken Ueland et al.
Forensic science international, 266, e99-e102 (2016-06-01)
Illegal poaching causes great harm to species diversity and conservation. A vast amount of money is involved in the trade of illegal or forged animal parts worldwide. In many cases, the suspected animal part is unidentifiable and requires costly and
Xiaowei Wang et al.
Talanta, 164, 727-734 (2017-01-22)
A fully automatic single-drop microextraction (SDME) coupled with gas chromatography/mass spectrometry (GC/MS) was developed for the determination of 12 hydroxylated metabolites of polycyclic aromatic hydrocarbons in seawaters. The derivatization reagent was added to the extraction solvent in order to realize
Alfonso Méndez-Bravo et al.
PloS one, 13(3), e0194665-e0194665 (2018-03-21)
Rhizobacteria associated with crops constitute an important source of potentially beneficial microorganisms with plant growth promoting activity or antagonistic effects against phytopathogens. In this study, we evaluated the plant growth promoting activity of 11 bacterial isolates that were obtained from
Yanan Bu et al.
Journal of separation science, 39(5), 932-938 (2015-12-19)
A fiber-in-tube solid-phase microextraction device based on a gold-functionalized stainless-steel wire and tube was developed and characterized by scanning electron microscopy and energy dispersive X-ray spectroscopy. In combination with high-performance liquid chromatography, it was evaluated using six polycyclic aromatic hydrocarbons
I W Liaw et al.
Journal of food science, 75(6), C559-C569 (2010-08-21)
Lipid oxidation products are primary contributors to whey ingredient off-flavors. The objectives of this study were to evaluate the impact of antioxidant addition in prevention of flavor deterioration of fluid whey and spray-dried whey protein. Cheddar and Mozzarella cheeses were
[Solid phase micro-extraction technique and its applications in medical analysis].
Zhen-ling Liu et al.
Yao xue xue bao = Acta pharmaceutica Sinica, 38(2), 153-158 (2003-06-05)
Xiafei Guo et al.
Journal of separation science (2018-02-13)
We report the electrochemical fabrication of a poly(2,2-bithiophene-co-3-methylthiophene)-graphene composite coating and its application in the headspace solid-phase microextraction and gas chromatography determination of benzenes (i.e., bromobenzene, 4-bromotoluene, 2-nitrotoluene, 3-nitrotoluene and 1,2,4-trichlorobenzene). The coating was uniform and showed cauliflower-like microstructure. It
Adele Papetti
Current opinion in biotechnology, 23(2), 168-173 (2011-10-04)
Nowadays there is an evident growing interest in natural antimicrobial compounds isolated from food matrices. According to the type of matrix, different isolation and purification steps are needed and as these active compounds belong to different chemical classes, also different
Shiau-Chian Soh et al.
Environmental monitoring and assessment, 124(1-3), 39-50 (2006-09-13)
A field investigation was conducted at all water treatment plants throughout 11 states and Federal Territory in Peninsular Malaysia. The sampling points in this study include treatment plant operation, service reservoir outlet and auxiliary outlet point at the water pipelines.
Igor Jerković et al.
PloS one, 13(5), e0196462-e0196462 (2018-05-09)
Performed phytochemical study contributes to the knowledge of volatile organic compounds (VOCs) of Halopteris filicina (Grateloup) Kützing, Dictyota dichotoma (Hudson) J. V. Lamouroux, Posidonia oceanica (L.) Delile and Flabellia petiolata (Turra) Nizamuddin from the Adriatic Sea (single point collection). VOCs
M C Prieto-Blanco et al.
Journal of chromatography. A, 1431, 176-183 (2016-01-13)
A method for quantifying benzalkonium chloride (BAK), an alkyl dimethyl benzyl ammonium compound, in several biocides formulations is proposed. A tertiary amine like N-(3-aminopropyl)-N-dodecyl-1,3-propanediamine (TA) and a straight-chain alkyl ammonium compound like trimethyl-tetradecyl ammonium chloride (TMTDAC), have been employed as
Jun Peng et al.
Mikrochimica acta, 185(2), 141-141 (2018-03-30)
Graphene oxide (GO), nanosized Fe
Matt A Limmer et al.
International journal of phytoremediation, 17(11), 1115-1122 (2015-05-06)
Phytoscreening has been demonstrated at a variety of sites over the past 15 years as a low-impact, sustainable tool in delineation of shallow groundwater contaminated with chlorinated solvents. Collection of tree cores is rapid and straightforward, but low concentrations in
Rosaria Costa et al.
Journal of analytical methods in chemistry, 2015, 951748-951748 (2015-05-07)
Mushrooms are sources of food, medicines, and agricultural means. Not much is reported in the literature about wild species of the Mediterranean flora, although many of them are traditionally collected for human consumption. The knowledge of their chemical constituents could
Igor Lukić et al.
Food technology and biotechnology, 55(1), 95-108 (2017-06-01)
To differentiate monovarietal wines made from native and introduced varieties in Istria (Croatia), samples of Malvazija istarska, Chardonnay and Muscat yellow from two harvest years (2013 and 2014) were subjected to headspace solid-phase microextraction and gas chromatographic/mass spectrometric analysis (HS-SPME-GC/MS)
Wei Zou et al.
Zhonghua lao dong wei sheng zhi ye bing za zhi = Zhonghua laodong weisheng zhiyebing zazhi = Chinese journal of industrial hygiene and occupational diseases, 33(4), 297-298 (2015-10-29)
To establish a method for determination of 2,5-hexanedione in urine by headspace solid-phase microextraction-gas chromatography. After extraction by solid-phase microextraction head, 2,5-hexanedione in urine was determined by gas chromatography and was quantified by external standard method. The concentration of 2,5-hexanedione
Isabel Clemente et al.
Analytical and bioanalytical chemistry, 409(4), 1037-1048 (2016-10-27)
One critical challenge when developing a new antimicrobial packaging material is to demonstrate the mode of action of the antimicrobials incorporated into the packaging. For this task, several analytical techniques as well as microbiology are required. In this work, the
Jianping Yang et al.
International journal of environmental research and public health, 13(10) (2016-09-27)
Methyl tertiary butyl ether (MTBE)-A well known gasoline additive substituting for lead alkyls-causes lipid disorders and liver dysfunctions in animal models. However, whether MTBE exposure is a risk factor for non-alcoholic fatty liver disease (NAFLD) remains uncertain. We evaluate the
Sung Min Cho et al.
Talanta, 148, 729-733 (2015-12-15)
Headspace (HS) extraction can be carried out easily and aptly via single drop microextraction coupled with capillary electrophoresis (CE). However, one drawback is the difficulty of keeping the single drop stably at the capillary tip. To solve this problem, we
Miao Pei et al.
Journal of chromatography. A, 1531, 13-21 (2017-11-28)
Effective extraction is a key step in the determination of sulfonylurea herbicides (SUHs) in complicated samples. According to the chemical properties of SUHs, a new monolithic adsorbent utilizing acrylamidophenylboronic acid and vinylimidazole as mixed functional monomers was synthesized. The new
Niloufar Eskandarpour et al.
Chemosphere, 191, 36-43 (2017-10-14)
The nanofibrous polycaprolactam (polyamide 6 (PA6)) incorporated with manganese oxide (MnO) nanoparticles was fabricated by electrospinning and used as a new fiber coating for headspace-solid phase microextraction (HS-SPME) of the selected phthalate esters (PEs) in water samples prior to GC-μECD.
Dong Zeng et al.
Forensic science international, 159(2-3), 168-174 (2005-09-13)
An analytical method for determination of tetramethylenedisulfotetramine (tetramine) in human urine by gas chromatography-flame thermionic detection (GC-FTD) coupling with a direct immersed solid-phase micro-extraction (DI-SPME) was developed. The enrichment effects of three fiber coatings of SPME for tetramine were compared.
Andreea Botezatu et al.
Food additives & contaminants. Part A, Chemistry, analysis, control, exposure & risk assessment, 32(7), 1199-1206 (2015-04-22)
3-Alkyl-2-methoxypyrazines (MPs) are odour-active compounds that elicit atypical green aromas and flavours in some wines, and are resilient to removal using traditional wine-making approaches. They originate either as contaminants from Coccinellidae beetles inadvertently introduced during wine processing ("ladybug taint") or
Satoshi Mochizuki et al.
FEBS letters, 590(7), 1017-1027 (2016-03-19)
Plants biosynthesize a variety of bioactive lipid derivatives, such as green leaf volatiles (GLVs) and jasmonates (JAs). Here we identify a lipoxygenase 2 (LOX2) involved in GLV biosynthesis in Arabidopsis using mutant lines for each of the six LOX isoforms
Mingxue Wu et al.
Journal of chromatography. A, 1456, 34-41 (2016-06-19)
We designed a novel hydrazone covalent organic framework (COF) and developed a polydopamine (PDA) method to immobilize COF on a stainless steel fiber for headspace solid-phase microextraction (HS-SPME). A series of characterization studies was performed to validate the structure and
Juanjuan Feng et al.
Journal of separation science, 40(24), 4773-4779 (2017-10-19)
An in-tube solid-phase microextraction device was developed by packing poly(ionic liquids)-coated stainless-steel wires into a polyether ether ketone tube. An anion-exchange process was performed to enhance the extraction performance. Surface properties of poly(ionic liquids)-coated stainless-steel wires were characterized by scanning
Juan Sánchez-González et al.
Analytical and bioanalytical chemistry, 409(5), 1207-1220 (2016-11-07)
A molecularly imprinted polymer (MIP) selective for cannabinoids [Δ
Suling Zhang et al.
Journal of chromatography. A, 1452, 18-26 (2016-05-29)
Zeolitic imidazolate frameworks (ZIFs) consist of metal nodes connected to imidazolate linkers, having both the properties of metal-organic frameworks (MOFs) and inorganic zeolites, such as controllable pore sizes, high porosity and surface areas, as well as exceptional thermal and chemical
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