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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
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.
Manoochehr Farjaminezhad et al.
Journal of separation science, 40(3), 717-724 (2017-01-04)
A high-performance metal oxide polymer magnetite/polyethylene glycol nanocomposite was prepared and coated in situ on the surface of the optical fiber by sol-gel technology. The magnetite nanoparticles as nanofillers were synthesized by a coprecipitation method and bonded with polyethylene glycol
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
C González-Barreiro et al.
Chemosphere, 75(1), 34-47 (2009-01-17)
Thermal waters can be regarded as worth developing because of their human health implications and, if thermal tourism is promoted, their importance to the local economy. Galicia, in the North-West of Spain, has numerous sources of thermal waters spread all
M E McComb et al.
Talanta, 44(11), 2137-2143 (2008-10-31)
A novel method of solventless extraction has been developed based on a combination of solid phase micro extraction and purge and trap methods. In this technique, a hollow needle with either a short length of GC capillary column placed inside
Guido Flamini et al.
Analytica chimica acta, 589(1), 120-124 (2007-04-03)
The volatiles emitted in vivo by different plant parts of Citrus limon (Rutaceae) have been identified by mean of head space-solid phase micro extraction (HS-SPME) and gas chromatography coupled with mass spectrometry (GC-MS) analyses. In particular, the profiles of flower
Mimy Young et al.
Journal of chromatography. A, 1455, 1-8 (2016-06-12)
A modified approach for characterization of the vapor-time profile of the headspace odors of explosives was developed using solid-phase microextraction (SPME) incorporating introduction of an externally-sampled internal standard (ESIS) followed by gas chromatography/mass spectrometry (GC/MS) analysis. With this new method
Aadil Bajoub et al.
Food research international (Ottawa, Ont.), 76(Pt 3), 410-417 (2015-10-01)
Herewith we have evaluated the variability of the composition in terms of volatile compounds of monovarietal "Picholine marocaine" olive oils and checked the possible influence of their geographical origin. For this purpose, 92 olive samples were collected during the harvesting
Ana Lúcia de Toffoli et al.
Journal of separation science, 41(1), 288-302 (2017-10-07)
The application of graphene-based sorbents in sample preparation techniques has increased significantly since 2011. These materials have good physicochemical properties to be used as sorbent and have shown excellent results in different sample preparation techniques. Graphene and its precursor graphene
Elidiane Gomes da Silva et al.
The Analyst, 137(16), 3841-3846 (2012-07-05)
A solid-phase micro-extraction (SPME) method using an SPME fiber device and graphite furnace (GF) for extracting Se compounds was proposed. Various factors affecting the derivatization and extraction of Se(IV) by SPME-GF were evaluated, including the effect of acid (type and
Meng Mei et al.
Analytica chimica acta, 860, 29-36 (2015-02-16)
In present study, a convenient, sensitive and environmentally friendly method for the determination of five benzoylurea insecticides (BUs) in water and juice samples was developed. To extract trace benzoylurea insecticides effectively, poly(methacrylic acid-co-ethylene dimethacrylate) monolith was prepared and used as
Leticia García-Aguilar et al.
Molecules (Basel, Switzerland), 20(2), 3479-3495 (2015-02-19)
Prunus serotina (black cherry), commonly known in Mexico as capulín, is used in Mexican traditional medicine for the treatment of cardiovascular, respiratory, and gastrointestinal diseases. Particularly, P. serotina seeds, consumed in Mexico as snacks, are used for treating cough. In
F Musshoff et al.
Clinical chemistry and laboratory medicine, 37(6), 639-642 (1999-09-04)
A simple and rapid method for the analysis of parathion in biological samples is presented. The method consists of the extraction of parathion from blood samples by headspace solid-phase micro-extraction (SPME), followed by capillary gas chromatography and mass spectrometry detection.
M Bergamaschi et al.
Journal of dairy science, 98(4), 2183-2196 (2015-02-16)
The objective of this work was to study the effect of dairy system, herd within dairy system, and characteristics of individual cows (parity, days in milk, and daily milk yield) on the volatile organic compound profile of model cheeses produced
Rodrigo Almeida Simões et al.
Bioanalysis, 7(1), 65-77 (2015-01-07)
A high-throughput bioanalytical method using 96-blade thin film microextraction (TFME) and LC-MS/MS for the analysis of repaglinide (RPG) and two of its main metabolites was developed and used for an in vitro metabolism study. The target analytes were extracted from
Xiaoting Yang et al.
Journal of separation science, 38(8), 1380-1387 (2015-02-07)
Monoamine acidic metabolites in biological samples are essential biomarkers for the diagnosis of neurological disorders. In this work, acrylamide-functionalized graphene adsorbent was successfully synthesized by a chemical functionalization method and was packed in a homemade polyether ether ketone micro column
Md Nazmul Alam et al.
Analytical chemistry, 87(19), 9846-9854 (2015-09-15)
Solid-phase microextraction (SPME) is a well-known sampling and sample preparation technique used for a wide variety of analytical applications. As there are various complex processes taking place at the time of extraction that influence the parameters of optimum extraction, a
Anna Dawiec-Liśniewska et al.
Food chemistry, 258, 63-70 (2018-04-16)
The first article of a two-article series presents pervaporation (PV) of volatile aroma compounds from fruit juice hydrolates (plum, apple, blackcurrant and cherry). The purpose of this research was to evaluate the effectiveness of fruit juice hydrolates separation on a
Abbas Ostovan et al.
Ultrasonics sonochemistry, 43, 52-60 (2018-03-21)
This study is devoted on Allura Red as food colorant preconcentration and determination in beverage, fruit juice and drink water samples is based on usage of Mn- and Cu- @ ZnS-NPs-AC as new sorbent for ultrasound-assisted-dispersive solid-phase microextraction (UA-DSPME) combined
Nathaly Reyes-Garcés et al.
Analytical chemistry, 87(19), 9722-9730 (2015-09-05)
This study presents new thin-film solid phase microextraction (SPME) devices prepared on plastic as potential single-use samplers for bioanalysis. Polybutylene terephthalate (PBT) was selected as a support due to its well-known chemical resistance, low cost, and suitability as a material
Marco Tasin et al.
Microbial ecology (2018-03-12)
Semiochemicals released by plant-microbe associations are used by herbivorous insects to access and evaluate food resources and oviposition sites. Adult insects may utilize microbial-derived nutrients to prolong their lifespan, promote egg development, and offer a high nutritional substrate to their
Hasan Bagheri et al.
Mikrochimica acta, 185(1), 62-62 (2018-03-30)
The authors describe a zinc-based metal-organic framework/polyethersulfone nanocomposite (TMU-4/PES) coating deposited on a stainless steel wire via a single-phase inversion method. The nanocomposite represents a novel fiber coating for headspace solid-phase microextraction of organophosphorous pesticides (OPPs) from environmental water and
Shuang Chen et al.
Journal of food science, 82(12), 2816-2822 (2017-11-14)
This study investigated the aroma contribution of volatile sulfur compounds (VSCs) in Moutai liquors. The VSCs were analyzed using headspace solid-phase microextraction-gas chromatography-pulsed flame photometric detection (HS-SPME-GC-PFPD). The influences of SPME fibers, ethanol content in the sample, pre-incubation time, and
Andriati Ningrum et al.
Chemistry & biodiversity, 11(11), 1871-1881 (2014-11-20)
Carotenoid degradation products, known as norisoprenoids, are aroma-impact compounds in several plants. Pandan wangi is a common name of the shrub Pandanus amaryllifolius. The genus name 'Pandanus' is derived from the Indonesian name of the tree, pandan. In Indonesia, the
Paola Andrade et al.
Plant science : an international journal of experimental plant biology, 267, 112-123 (2018-01-25)
The sesquiterpene alcohol nerolidol, synthesized from farnesyl diphosphate (FDP), mediates plant-insect interactions across multiple trophic levels with major implications for pest management in agriculture. We compared nerolidol engineering strategies in tobacco using agroinfiltration to transiently express strawberry (Fragraria ananassa) linalool/nerolidol
Yeh-Chung Chien
The Science of the total environment, 382(2-3), 228-239 (2007-06-02)
This study examines inter-brand, intra-brand and intra-model variations in volatile organic chemical (VOC) levels inside new cars. The effect of temperature on interior VOC levels was examined using model automobiles with and without the air-conditioning running. Potential sources of VOC
Juanjuan Feng et al.
Journal of separation science, 38(1), 128-133 (2014-10-30)
A novel nanostructured copper-based solid-phase microextraction fiber was developed and applied for determining the two most common types of phthalate environmental estrogens (dibutyl phthalate and diethylhexyl phthalate) in aqueous samples, coupled to gas chromatography with flame ionization detection. The copper
Yung-Han Shih et al.
Chemistry (Weinheim an der Bergstrasse, Germany), 23(1), 42-46 (2016-11-01)
A facile method to improve the feasibility of water-unstable metal-organic frameworks in an aqueous environment has been developed that involves imbedding in a polymer monolith. The effect of compartment type during polymerization plays a significant role in maintaining the crystalline
Ilhem Rjeibi et al.
Lipids in health and disease, 16(1), 206-206 (2017-11-01)
Plant essential oils and phenolic compounds are widely used for their medicinal properties. Thus, the aim of this study is to evaluate the nutritional values, the chemical composition, antioxidant activity and anti-hemolytic effects of Pittosporum tobira seeds. The aroma compounds
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