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Norma Iris Caraballo et al.
Forensic science international, 266, 148-159 (2016-06-10)
In criminal investigations, the collection of human scent often employs a non-contact, dynamic airflow device, known as the Scent Transfer Unit 100 (STU-100), to transfer volatile organic compounds (VOCs) from an object/person onto a collection material that is subsequently presented
Somchai Rice et al.
Forensic science international, 257, 257-270 (2015-10-02)
This report highlights the importance of an individual chemical's odor impact in the olfactory identification of marijuana, cocaine, and heroin. There are small amounts of highly odorous compounds present in headspace of these drugs, with very low odor detection thresholds
Rosa Perestrelo et al.
Journal of chromatography. A, 1381, 54-63 (2015-01-27)
An improved, reliable and powerful analytical strategy based on digitally controlled microextraction by packed sorbent (MEPS) combined with ultrahigh pressure liquid chromatography (UHPLC) was validated for the simultaneous identification and quantification of major furanic derivatives, namely 5-hydroxymethyl-2-furaldehyde (5HMF), 5-methyl-2-furaldehyde (5MF)
Valentina Lazazzara et al.
Microbiological research, 201, 52-62 (2017-06-13)
Bacterial volatile organic compounds (VOCs) play important ecological roles in soil microbial interactions. Lysobacter spp. are key determinants of soil suppressiveness against phytopathogens and the production of non-volatile antimicrobial metabolites has been extensively characterised. However, the chemical composition and antagonistic
Alireza Ghiasvand et al.
Biomedical chromatography : BMC, 31(12) (2017-06-16)
The surface of a stainless steel fiber was made larger, porous and cohesive by platinizing for tight attachment of its coating. Then it was coated by a polyaniline/polypyrrole/graphene oxide (PANI/PP/GO) nanocomposite film using electrochemical polymerization. The prepared PANI/PP/GO fiber was
Xiuqin Wang et al.
Journal of chromatography. A, 1522, 16-22 (2017-10-02)
Aldehydes are the potentially damaging pollutants in the environment, but it is difficult to be determined due to the low concentration level. Therefore, to accurate analysis of aldehydes, it is important for efficient sample preparation with selective enrichment and rapid
Wiley A Hall et al.
Journal of agricultural and food chemistry, 63(12), 3094-3103 (2015-03-12)
End-products of tree nuts and tree fruits grown in California, USA were evaluated for the ability to remove methyl bromide (MB) from ventilation effluent following postharvest chamber fumigation. Activated carbon sorbents from walnut and almond shells as well as peach
Fei He et al.
Food chemistry, 239, 622-630 (2017-09-07)
Flavor stability of hard tea beverage was investigated over eight weeks of storage. The volatile compounds were analyzed using solid-phase microextraction-gas chromatography-mass spectrometry (SPME-GC-MS) and two-dimensional GC-MS. Quantitative analysis showed that the concentrations of linalool, citronellol, geranial, neral, geraniol, and
Ioanna Antoniadi et al.
The Plant cell, 27(7), 1955-1967 (2015-07-15)
Cytokinins (CKs) play a crucial role in many physiological and developmental processes at the levels of individual plant components (cells, tissues, and organs) and by coordinating activities across these parts. High-resolution measurements of intracellular CKs in different plant tissues can
Lóránd Kiss et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 1044-1045, 149-157 (2017-01-23)
The antidotal potency of dimethyl trisulfide (DMTS) against cyanide poisoning was discovered and investigated in our previous studies. Based on our results it has better efficacy than the Cyanokit and the Nithiodote therapies that are presently used against cyanide intoxication
Sheelan Ahmad et al.
Analytical chemistry, 87(1), 754-759 (2014-12-03)
A novel approach is described for the quantitative bioanalysis of drugs in blood samples by ionization of the analytes collected on solid-phase microextraction (SPME) fibers by mass spectrometry (MS). The technique combines the attractive features of SPME microsampling using minimal
I Romero et al.
Talanta, 134, 394-401 (2015-01-27)
Volatile compounds are responsible for the aroma of virgin olive oil and also for its quality. The high number and different nature of volatile compounds drive to the need of a reliable analytical method that allows their proper quantification to
Ping Guo et al.
Analytical and bioanalytical chemistry, 410(2), 373-389 (2017-11-11)
A highly binding dummy template surface of molecularly imprinted polymers (MWNTs-MIPs) was synthesized on multi-walled carbon nanotubes surface using 2-phenylpropionic acid as dummy template, 4-vinylpyridine as the functional monomer, ethylene glycol dimethacrylate as the cross-linker, and DMF as porogen by
Mónica Bueno et al.
Journal of chromatography. A, 1369, 33-42 (2014-12-03)
This paper presents a new strategy for the direct evaluation of odor-active carbonyls in the wine headspace and for the simultaneous estimation of their amounts in odorless bonded forms. In the final developed strategy, 25 mL of wine are spiked
Siming Huang et al.
Talanta, 172, 155-161 (2017-06-13)
Polyaniline/silver (PANI/Ag) composites were prepared with a one-step synthesis method, and fabricated into solid-phase microextraction fiber coatings through three different means, i.e. in situ growth, gluing and chemical bonding. This work explored the utility of the as-fabricated PANI/Ag SPME fibers
Yoshinori Asakawa et al.
Journal of oleo science, 66(8), 889-895 (2017-07-14)
The volatile compounds obtained from the different organs of Houttuynia cordata (Saururaceae) and Litsea cubeba (Lauraceae) were analyzed by Gas Chromatography/Mass Spectrometry (GC/MS), Headspace Solid Phase Micro Extraction-Gas Chromatography/Mass Spectrometry (HS-SPME-GC/MS), and GC/olfactometry (GC/O). The major component of all parts
Andreas Kremser et al.
Analytical and bioanalytical chemistry, 408(3), 943-952 (2015-12-18)
After more than 25 years, solid-phase microextraction (SPME) has gained widespread acceptance as a well-automatable and flexible microextraction technique, while its instrumental basis remained mostly unchanged. The novel PAL (Prep And Load solution) SPME Arrow combines the advantages of SPME
Ana Mendes-Ferreira et al.
Journal of industrial microbiology & biotechnology, 36(4), 571-583 (2009-02-05)
The aim of this study was to evaluate the combined effect of initial nitrogen content on the production of hydrogen sulphide and other volatile compounds during alcoholic fermentation. For that propose, three commercial wine strains of Saccharomyces cerevisiae were used
A G Ramzy et al.
The British journal of dermatology, 177(2), 522-530 (2017-03-16)
Contact allergy to chloroprene rubber products is well known. Thiourea compounds are considered the cause of allergy. Diethylthiourea commonly occurs in this type of product and can decompose to the sensitizer ethyl isothiocyanate. To investigate the clinical importance of degradation
Jianping Gao et al.
Journal of breath research, 10(2), 027102-027102 (2016-06-09)
A number of multiresistant pathogens including Acinetobacter baumannii (A. baumannii) place a heavy burden on ventilator-associated pneumonia (VAP) patients in intensive care units (ICU). It is critically important to differentiate between bacterial infection and colonization to avoid prescribing unnecessary antibiotics.
Corrigendum to "Zinc/Aluminum layered double hydroxide-titanium dioxide composite nanosheet film as novel solid phase microextraction fiber for the gas chromatographic determination of valproic acid" [Talanta, Volume 103, 15 January 2013, Pages 207-213].
Amir Abbas Matin et al.
Talanta, 175, 573-573 (2017-08-27)
Anya Kwan et al.
Food chemistry, 250, 46-53 (2018-02-08)
The goal of this project was to create hydrogels, a type of soluble biopolymer delivery system to encapsulate flavored nanoemulsions that are released under artificial saliva conditions. Low methoxyl (LM) pectin and whey protein isolate (WPI) at pH 4.0 were
Mahdi Ghorbani et al.
Analytical and bioanalytical chemistry, 408(27), 7719-7729 (2016-08-27)
Ultrasonic-assisted magnetic dispersive solid-phase microextraction coupled with high performance liquid chromatography has been developed for extraction and determination of mirtazapine, N-desmethyl mirtazapine, and 8-hydroxy mirtazapine in human urine and water samples. Magnetic graphene oxide-polyaniline nanocomposite (MGOPA) as a novel SPME
O Ros et al.
Talanta, 134, 247-255 (2015-01-27)
In the present work, the suitability of polyethersulfone (PES) tube was assessed for the simultaneous sorptive microextraction of commonly found endocrine disrupting compounds in natural waters such as bisphenol-A (BPA), nonylphenol technical mixture (NP mix), 4-tert-octylphenol (4tOP), 4-n-octylphenol (4-nOP), 17β-estradiol
Shadi Kheirandish et al.
Ultrasonics sonochemistry, 39, 798-809 (2017-07-25)
In this work, we focused on development of a new techniques by coupling of ultrasound irradiation, cloud point method and magnetite solid phase microextraction for the extraction and preconcentration of Cr(III) ions from aqueous solutions. In order to reduce cost
Rapid Analysis of Volatile Flavor Compounds in Apple Fruit Using SPME and GC-Time-of-Flight Mass Spec
Song, J., et al.
Journal of Agricultural and Food Chemistry, 45 (5), 1801-1807 (1997)
Michael H I Comber et al.
Integrated environmental assessment and management, 11(4), 653-665 (2015-03-27)
The trend in discharges of petroleum-related substances from refineries in Europe shows a consistent picture of declining emissions, since first measured in 1969. This decline coincides with enhanced internal capture or recycling procedures and increasing use of physical and biological
Hu Cheng et al.
Mikrochimica acta, 185(1), 56-56 (2018-03-30)
A nanoporous carbon material was synthesized by heating potassium citrate without using a template or an activating agent. It is shown to represent a viable coating for use in solid-phase microextraction. The material is thermally stable and mainly consists of
Carlos Felipe Bosa et al.
Insect science, 23(1), 105-116 (2014-10-24)
We compared the calling and mating behavior and volatile release of wild males Anastrepha ludens (Loew) with males from 4 mass-reared strains: (i) a standard mass-reared colony (control), (ii) a genetic sexing strain (Tap-7), (iii) a colony started from males
Dimitra A Lambropoulou et al.
Journal of biochemical and biophysical methods, 70(2), 195-228 (2006-12-13)
Modern trends in analytical chemistry are towards the simplification and miniaturization of sample preparation, as well as the minimization of organic solvent used. In view of this aspect, several novel micro-extraction techniques are being developed in order to reduce the
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