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Rosa Perestrelo et al.
Talanta, 144, 382-389 (2015-10-11)
Leukotriene B4 (LTB4) is a potent mediator of inflammation and plays a key function in the pathophysiology of chronic asthma. Detectable urinary levels of LTB4, arises from the activation of leukotriene pathways. In this study an ultra-fast, selective and sensitive
Gun Woong Lee et al.
Protoplasma, 253(3), 683-690 (2015-11-05)
Rice bacterial blight, caused by Xanthomonas oryzae pv. oryzae (Xoo), is a severe disease of rice plants. Upon pathogen infection, rice biosynthesizes phytoalexins, including diterpenoids such as momilactones, phytocassanes, and oryzalexins. However, information on headspace volatiles in response to Xoo
Seyed Mohammad Majedi et al.
Journal of chromatography. A, 1486, 86-95 (2016-07-19)
Short-chain aliphatic amines are ubiquitous in the atmospheric environment. They play an important role in the formation and growth of atmospheric particles. As such, there is a pressing need to monitor these particle-bound compounds present at trace quantities. The present
Adriana Neves Dias et al.
Analytica chimica acta, 888, 59-66 (2015-09-01)
This study describes the use of cork as a new coating for bar adsorptive microextraction (BAμE) and its application in determining benzophenone, triclocarban and parabens in aqueous samples by HPLC-DAD. In this study bars with 7.5 and 15 mm of
Cristina Bach et al.
Journal of chromatography. A, 1448, 98-106 (2016-04-30)
Here, we developed and validated a headspace-solid-phase microextraction-gas chromatography/mass spectrometry (HS-SPME-GC/MS) method for the determination of 14 volatile perfluorinated alkylated substances (PFASs) in water and sediment samples according to SANTE 11945/2015 guidelines. Three fluorotelomer alcohols (FTOHs), two perfluoroalkyl iodides (PFIs)
Weiqian Liang et al.
Journal of chromatography. A, 1491, 9-15 (2017-02-27)
In this work, a barley husk biomaterial was successfully carbonized by hydrothermal method. The carbon had a high specific surface area and good stability. It was coated onto a stainless steel wire through sol-gel technique to prepare a solid-phase microextraction
Susanna Vogliardi et al.
Analytica chimica acta, 857, 1-27 (2015-01-22)
Hair analysis has assumed increasing importance in the determination of substances of abuse, both in clinical and forensic toxicology investigations. Hair analysis offers particular advantages over other biological matrices (blood and urine), including a larger window of detection, ease of
William D Kranz et al.
Analytical and bioanalytical chemistry, 406(30), 7817-7825 (2014-11-27)
Genuine explosive materials are traditionally employed in the training and testing of explosive-detecting canines so that they will respond reliably to these substances. However, challenges arising from the acquisition, storage, handling, and transportation of explosives have given rise to the
Heike Gerhardt et al.
Journal of chemical ecology, 42(8), 725-738 (2016-07-06)
Spatially controlled in vivo sampling by contact solid phase microextraction with a non-coated silica fiber combined with gas chromatography-mass spectrometry (GC-MS) was utilized for hydrocarbon profiling in tarsal adhesion secretions of four insect species (Nicrophorus vespilloides, Nicrophorus nepalensis, Sagra femorata
Aníbal Valenzuela et al.
Talanta, 125, 196-203 (2014-05-21)
A new headspace solid-phase micro-extraction (HS-SPME) method followed by gas chromatography with pulsed flame photometric detection (GC-PFPD) analysis has been developed for the simultaneous determination of 11 organotin compounds, including methyl-, butyl-, phenyl- and octyltin derivates, in human urine. The
Zarrin Es'haghi et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 973C, 142-151 (2014-12-03)
Hollow fiber-solid phase micro-extraction (HF-SPME) technique containing sol-gel-derived Fe
Shanshan Zhou et al.
Se pu = Chinese journal of chromatography, 36(2), 100-106 (2018-03-28)
A novel silica-based solid-phase microextraction (SPME) fiber was successfully fabricated by the immobilization of silica nanoflakes (SiO
Nor H Kamarulzaman et al.
Talanta, 191, 535-544 (2018-09-29)
Different extraction procedures were evaluated to assess their potential for measuring volatile organic compounds (VOCs) from raw rubber materials. Four headspace sampling techniques (SHS, DHS, HS-SPME and µ-CTE) were studied. Each method was firstly optimised to ensure their reliability in
Maria Celeiro et al.
Chemosphere, 195, 201-211 (2017-12-22)
Due to the high concern generated in the last years about the safety of recycled tire rubber used for recreational sports surfaces, this study aims at evaluating the presence of forty organic compounds including polycyclic aromatic hydrocarbons (PAHs), phthalates, adipates
Michelle Hartmann et al.
In vitro cellular & developmental biology. Animal, 44(10), 458-463 (2008-09-24)
Serum of animal origin, like foetal calf serum (FCS), is used as a standard supplement for media to cultivate mammalian cells, mostly due to its growth-supporting properties. Unfortunately, animal serum has many disadvantages like the risk of contamination, high costs
Igor Jerković et al.
Molecules (Basel, Switzerland), 21(3), 377-377 (2016-03-24)
The samples of Satureja subspicata Vis. honey were confirmed to be unifloral by melissopalynological analysis with the characteristic pollen share from 36% to 71%. Bioprospecting of the samples was performed by HPLC-DAD, GC-FID/MS, and UV/VIS. Prephenate derivatives were shown to
Hester Peltenburg et al.
Journal of chromatography. A, 1447, 1-8 (2016-04-17)
The mixed-mode (C18/strong cation exchange-SCX) solid-phase microextraction (SPME) fiber has recently been shown to have increased sensitivity for ionic compounds compared to more conventional sampler coatings such as polyacrylate and polydimethylsiloxane (PDMS). However, data for structurally diverse compounds to this
J A Baz-Lomba et al.
Journal of chromatography. A, 1531, 32-38 (2017-11-29)
This article presents a novel approach for the analysis of 13 drugs in wastewater for use in wastewater-based epidemiology (WBE) studies. Sample preparation remains one of the principal bottlenecks in modern high-throughput analysis by ultra-high-performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS).
Igor Jerković et al.
Chemistry & biodiversity, 13(2), 210-218 (2016-02-18)
Eight propolis samples from Croatia were analyzed in detail, to study the headspace, volatiles, anti-Varroa-treatment residue, phenolics, and antioxidant properties. The samples exhibited high qualitative/quantitative variability of the chemical profiles, total phenolic content (1,589.3-14,398.3 mg GAE (gallic acid equivalent)/l EtOH extract)
Masoud Ghader et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 1083, 222-232 (2018-03-20)
Vaccine production is a biological process in which variation in time and output is inevitable. Thus, the application of Process Analytical Technologies (PAT) will be important in this regard. Headspace solid - phase microextraction (HS-SPME) coupled with GC-MS can be
Hatam Amanzadeh et al.
Analytica chimica acta, 884, 52-60 (2015-06-16)
In this work, ZnO/PPy nanocomposite coating was fabricated on stainless steel and evaluated as a novel headspace solid phase microextraction (HS-SPME) fiber coating for extraction of ultra-trace amounts of environmental pollutants; namely, aliphatic hydrocarbons in water and soil samples. The
Maria Grazia Farbo et al.
International journal of food microbiology, 284, 1-10 (2018-07-11)
Many foods and beverages in temperate and tropical regions are prone to contamination by ochratoxin A (OTA), one of the most harmful mycotoxins for human and animal health. Aspergillus ochraceus and Aspergillus carbonarius are considered among the main responsible for
A H Ide et al.
Journal of pharmaceutical and biomedical analysis, 129, 593-599 (2016-08-16)
In this study, the enhancement for trace analysis of sulfonamide antibiotics (sulfathiazole, sulfamethoxazole and sulfadimethoxine) and trimethoprim in water matrices is proposed using bar adsorptive microextraction combined with micro-liquid desorption followed by high-performance liquid chromatography with diode array detection (BAμE-μLD/HPLC-DAD).
Miyi Yang et al.
Food chemistry, 197 Pt B, 1064-1072 (2015-12-18)
A green, simple, inexpensive dispersive solid-phase microextraction method coupled with high-performance liquid chromatography was developed for rapid screening and selective recognition of benzoylurea insecticides (BUs) in honey and tea beverages. A novel adsorbent, ionic liquid (IL)-modified β-cyclodextrin/attapulgite (β-CD/ATP), was prepared
Mario F Mirabelli et al.
The Analyst, 143(4), 891-899 (2018-01-23)
We evaluated the performance of a dielectric barrier discharge ionization (DBDI) source for pesticide analysis in grape juice, a fairly complex matrix due to the high content of sugars (≈20% w/w) and pigments. A fast sample preparation method based on
Jie Wang et al.
Environmental pollution (Barking, Essex : 1987), 236, 871-877 (2018-03-03)
Risk assessment of hydrophobic organic contaminants (HOCs) using the total chemical concentration following exhaustive extraction may overestimate the actual availability of HOCs to non-target organisms. Existing methods for estimating HOC bioavailability in soil have various operational limitations. In this study
Yong Zhou et al.
American journal of translational research, 9(11), 5116-5126 (2017-12-09)
This study works to develop novel models that may be adopted for earlier non-invasive breathomics tests to determine pneumonia pathogens. Two types of pneumonia models were created, both Pneumonia and pathogen-specific discriminating VOC patterns (1H-Pyrrole-3-carbonitrile, Diethyl phthalate, Cedrol, Decanoic acid
Arezou Amiri Pebdani et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 147, 26-30 (2015-04-02)
A simple solid phase microextraction method based on molecularly imprinted polymer sorbent in the hollow fiber (MIP-HF-SPME) combined with fiber optic-linear array spectrophotometer has been applied for the extraction and determination of diclofenac in environmental and biological samples. The effects
Tomasz Chmiel et al.
Food chemistry, 221, 1041-1056 (2016-12-17)
Most of scientific papers concern the qualitative or semi-quantitative analysis of aroma-active terpenes in liquid food matrices. Therefore, the procedure based on solid-phase microextraction and two-dimensional gas chromatography-time-of-flight mass spectrometry for determination of monoterpenes in fresh berries was developed. The
Aniela Burant et al.
Chemosphere, 144, 2247-2256 (2015-11-26)
Treatment and reuse of brines, produced from energy extraction activities, requires aqueous solubility data for organic compounds in saline solutions. The presence of salts decreases the aqueous solubility of organic compounds (i.e. salting-out effect) and can be modeled using the
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