Results 31 to 40 of about 28,905 (244)

A Hybrid Stainless-Steel SPME Microneedle Electrode Sensor for Dual Electrochemical and GC-MS Analysis

Sensors, 2023
A mechanically robust in-tube stainless steel microneedle solid phase microextraction (SPME) platform for dual electrochemical and chromatographic detection has been demonstrated.
Samuel M. Mugo, Scott V. Robertson, Marika Wood   +2 more
doaj   +1 more source

Stopper with Interchangeable Septa for SPME [PDF]

Journal of Chemical Education, 2009
Describes the use of round- and flat-bottom flasks and the modification of their stoppers for the analysis of volatile organic compounds by solid-phase microextraction.
Zoran Zdravkovski, Jordan Cavdarov
openaire   +1 more source

HS-SPME-GC–MS determination of the scent of Anacamptis taxa (fam. Orchidaceae) from Basilicata (Southern Italy)

, 2023
The scent of Anacamptis species has been analyzed by using HS-SPME-GC–MS. The sample was collected in Basilicata (Southern Italy). Every species showed a different composition of the scent in the analyses we performed.
Maurizio D’Auria (3824980), Marisabel Mecca (4862920), Lucia Emanuele (14782163), Rocco Racioppi (611325), Richard Lorenz (3824974), Vito Antonio Romano (3824977), Licia Viggiani (2128267)   +6 more
core   +1 more source

Comparative study for the volatile constituents and the antioxidant activity of the essential oils of dried Achillea fragrantissima cultivated in Madinah Monawara, Saudi Arabia and Egypt

International Journal of Food Properties, 2019
Hydrodistilled essential oils (HD) of dried aerial parts of Achillea fragrantissima cultivated in Egypt and Madinah Monawara, Saudi Arabia, and their volatiles extracted by solid phase microextraction (SPME) were analyzed using Gas Chromatography – Mass ...
Amr Farouk, Hatem Ali, Abdel Rahman Al-Khalifa, Mohamed Mohsen, Reda Fikry   +4 more
doaj   +1 more source

Volatile compounds of myrtle (Myrtus communis L.) leaves and berries

Turkish Journal of Forestry, 2017
Plant volatile oils are used in different industrial areas with scientific and commercial purposes. In this case, plants having volatile compounds have always placed themselves in the center of research.
İlhami Emrah Dönmez, Halime Salman
doaj   +1 more source

Rapid on-site identification of hazardous organic compounds at fire scenes using person-portable gas chromatography-mass spectrometry (GC-MS)–part 2: water sampling and analysis

Forensic Sciences Research, 2020
Building and factory fires pose a great risk to human and environmental health, due to the release of hazardous by-products of combustion. These hazardous compounds can dissipate into the environment through fire water run-off, and the impact can be ...
Rylee Lam, Chris Lennard, Graham Kingsland, Paul Johnstone, Andrew Symons, Laura Wythes, Jeremy Fewtrell, David O’Brien, Val Spikmans   +8 more
doaj   +1 more source

The Oxidation Mechanisms of Saturated Fatty Acids: Formation of Hydroperoxide Isomers and Production of 2‐Alkanones and Lactones

Journal of the American Oil Chemists' Society, EarlyView.
ABSTRACT Saturated fatty acids (SFAs) are generally regarded simply as being resistant to oxidation compared with unsaturated fatty acids. However, it has long been reported that SFAs can undergo oxidation when heated at high temperatures, leading to the formation of unique degradation products such as 2‐alkanones and lactones.
Kanji Aoyagi, Shunji Kato, Kiyotaka Nakagawa   +2 more
wiley   +1 more source

Novas estratégias de otimização para a técnica de SPME e SPME com recobrimento internamente refrigerado [PDF]

, 2012
Tese (doutorado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas, Programa de Pós-Graduação em Química, Florianópolis, 2011Esta Tese apresenta três novas estratégias de otimização, sendo duas aplicadas à técnica de ...
Martendal, Edmar
core  

Do Governance Structures Drive Green Building Adoption? A Machine Learning Approach With Random Forests

Business Strategy and the Environment, EarlyView.
ABSTRACT This study examines the determinants of firms' propensity to adopt green buildings in the Euro Stoxx 300 and the S&P 500 indices, during 2012–2023. Using random forest binary classifiers, we assess the relative importance of financial, sectoral, geographic, and climate governance predictors and uncover nonlinear relationships often overlooked ...
María del Carmen Valls Martínez, José Manuel Santos‐Jaén, María Estefanía Sánchez Pacheco, Fernando José Zambrano Farías   +3 more
wiley   +1 more source

Aplicação da técnica de SPME-GC-MS na determinação dos produtos voláteis gerados na degradação térmica de polímeros [PDF]

, 2007
Tese (doutorado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas. Programa de Pós-Graduação em Quimica.Neste trabalho a técnica de SPME aliada a GC-MS foi aplicada para o estudo da degradação térmica do poli(propileno ...
Bortoluzzi, Janaína Heberle
core