Results 31 to 40 of about 9,222 (182)

Evaluation of Headspace Solid-Phase Microextraction for Analysis of Phosphine Residues in Wheat

Journal of AOAC INTERNATIONAL, 2012
Abstract In headspace (HS) analysis, a fumigant is released from a commodity into a gas-tight container by grinding, heating, or microwaves. A new technique uses HS-solid-phase microextraction (SPME) for additional preconcentration of fumigant.
Ren, Y.L., Padovan, B., Desmarchelier, J.M.   +2 more
openaire   +2 more sources

Evaluation of agronomic traits and storage stability in novel rice cultivar ‘Baromi3’ combining floury endosperm and lipoxygenase 3 deficiency

Journal of the Science of Food and Agriculture, EarlyView.
Abstract BACKGROUND Rice milling characteristics and storage stability are critical traits influencing industrial applications. Floury endosperm rice carrying the flo4‐4 allele is valuable for dry milling but exhibits reduced storage stability associated with altered starch structural characteristics.
Su‐Kyung Ha, Ye‐Ji Lee, Gileung Lee, Hyun‐Sook Lee, Kyeongmin Kang, Jae‐Ryoung Park, Seung Young Lee, Ji‐Eun Kwak, Mina Jin, Ji‐Ung Jeung, Chang Joo Lee, Jung‐Pil Suh   +11 more
wiley   +1 more source

Trace Analysis of Xylene in Occupational Exposures Monitoring [PDF]

Iranian Journal of Public Health, 2009
Background: Determination of organic pollutants usually requires extraction of the pollutants from samples, using hazard­ous solvent. Solid phase micro-extraction (SPME) is a solvent-free equilibrium extraction method, in which, proper calibra­tion can ...
HR Heidari, SJ Shahtaheri , M Alimohammadi , A Rahimi-Froshani   +3 more
doaj   +1 more source

Vacuum-assisted headspace-solid phase microextraction of pesticides in grape samples

Advances in Sample Preparation
Vacuum-assisted headspace solid-phase microextraction (Vac-HS-SPME) could provide an alternative for extracting pesticides from grape samples. Vac-HS-SPME method is utilized to the simultaneous analysis of six pesticides from various classes, namely ...
Yerkanat Syrgabek, Mereke Alimzhanova, Saltanat Yegemova, Svetlana Batyrbekova   +3 more
doaj   +1 more source

Headspace Solid Phase Microextraction in Pesticide Residues Analysis: 2. Apple Samples [PDF]

Pesticidi i Fitomedicina, 2007
Headspace solid phase microextraction method (HS/SPME), optimised previously for pesticide water solutions, was applied to trace residues of the pesticides chlorpyrifos, fenthion and bifenthrin in apple samples.
Jelena Milinović, Mirjana Marković, Dragan Marković, Rada Đurović   +3 more
doaj  

Authenticity Control of Alpine Aromatic Plants by Enantioselective Gas Chromatography–Mass Spectrometry. Part 1: White genepi (Artemisia umbelliformis Lam.)

CHIMIA, 2003
A method for the authenticity control of the alpine aromatic plant white genepi (Artemisia umbelliformis Lam.) was developed by means of coupling headspace solid-phase microextraction with enantioselective GC–MS.
Matthias Wüst, Umberto Piantini
doaj   +1 more source

Method Comparison for the Identification and Characterization of Odorants from Scots Pine (Pinus sylvestris L.) and Oriented Strand Boards (OSB) Made Thereof by GC-MS and GC-FID/O Using Different Headspace Techniques

Chemosensors, 2023
Volatile organic compounds (VOCs) from wood and wood composites are important contributors to odor profiles of indoor environments and can significantly influence human health and well-being.
Valentin Schierer, Cornelia Rieder-Gradinger, Erwin Rosenberg   +2 more
doaj   +1 more source

Chemical Ionization Mass Spectrometry: Fundamental Principles, Diverse Applications, and the Latest Technological Frontiers

Mass Spectrometry Reviews, EarlyView.
ABSTRACT The review examines the evolution of chemical ionization mass spectrometry (CI‐MS), a technique developed in 1966 by Field and Munson. CI is a soft‐ionization method that produces more intense molecular ions with less fragmentation than electron ionization (EI).
Malvika Dutt, Adriana Arigò, Giorgio Famiglini, Pierangela Palma, Achille Cappiello   +4 more
wiley   +1 more source

Determination of 2,5-Hexanedione in Urine by Headspace Solid-Phase Microextraction and Gas Chromatography [PDF]

Journal of Analytical Toxicology, 2009
2,5-Hexanedione (2,5-HD) is the most important metabolite of n-hexane and methyl ethyl ketone in human urine. Urinary 2,5-HD is used as a biomarker for biological monitoring of workers exposed to n-hexane. A simple method using headspace solid-phase microextraction (HS-SPME) and gas chromatography (GC) equipped with a flame-ionization detector (FID ...
Antônio Felipe F, Oliveira, Patrícia P, Maia, Maria José N, Paiva, Maria Elisa P B, Siqueira   +3 more
openaire   +2 more sources

Stable flies preferentially oviposit on sites offering conspecific eggs with egg‐derived bacterial semiochemicals

Insect Science, EarlyView.
Stable flies preferentially oviposit on sites offering conspecific eggs with egg‐derived airborne semiochemicals. Egg‐borne bacterial symbionts, and Serratia marcescens in particular, produce odorants which attract gravid female flies and elicit oviposition.
Emmanuel Hung, Anya Gould, Stephanie Zaborniak, Caelen Watson, Regine Gries, Sukhmani Kaur, Kyra Stephens, Augustus Negraeff, Ryan Lam, Alpha Hui, Pantea Zamani, Aryan Monfared, Gerhard Gries   +12 more
wiley   +1 more source