Results 91 to 100 of about 23,900 (225)

Recent Advances in the Extraction of Polycyclic Aromatic Hydrocarbons from Environmental Samples

Molecules, 2020
Polycyclic aromatic hydrocarbons (PAHs) comprise a group of chemical compounds consisting of two or more fused benzene rings. PAHs exhibit hydrophobicity and low water solubility, while some of their members are toxic substances resistant to degradation.
Natalia Manousi, George A. Zachariadis
doaj   +1 more source

Determination of total and available fractions of PAHs by SPME in oily wastewaters : overcoming interference from NAPL and NOM [PDF]

, 2009
Background, aim, and scope Polycyclic aromatic hydrocarbons (PAHs) are often found in oily wastewaters. Their presence is usually the result of human activities and has a negative effect on the environment.
AJ King, AJ King, António G. Brito, CL Arthur, CL Arthur, CR Maxin, DW Potter, EU Ramos, F Busetti, G Ouyang, G Ouyang, H Wong, J Ai, J Poerschmann, J Poerschmann, J Rumble, JD Hamme Van, JD Kubicki, José M. Oliveira, João Peixoto, KD Jones, M Al Zarooni, M Brigante, MA Schlautman, P Mayer, P-H Lee, R Doong, R Doong, Regina Nogueira, RJ Bartelt, Rui B. Gomes, S Lesage, S Shokrollahzadeh, SK Samanta, T Gorecki, T Kose, T Luan, W Zhu, WHJ Vaes, Z Zhang, Z Zhang, Z Zhang   +41 more
core   +1 more source

Bibliometric Analysis of Cubebenes and Related Sesquiterpenes: Natural Occurrence, Biosynthesis, Pharmacological Activities, and In‐Silico‐Based Future Therapeutic Potential

eFood, Volume 7, Issue 3, June 2026.
Cubebene‐related sesquiterpenes, found across diverse biological sources, exhibit promising pharmacological activities, including anti‐inflammatory, neuroprotective, and anticancer effects. This review highlights their molecular diversity, ADME profiles, and predicted multitarget interactions, underscoring their therapeutic relevance and potential in ...
Khadija Boualam, Ahmet B. Ortaakarsu, Sohaib Khatib, Mohamed A. Farag, Mansour Sobeh   +4 more
wiley   +1 more source

Determination of pesticides in fruit and fruit juices by chromatographic methods. An overview [PDF]

, 2011
In order to combat a variety of pests, pesticides are widely used in fruits. Several extraction procedures (liquid extraction, single drop microextraction, microwave-assisted extraction, pressurized liquid extraction, supercritical fluid extraction ...
Delerue-Matos, Cristina, Domingues, Valentina F., Fernandes, Virgínia C., Mateus, Nuno   +3 more
core   +1 more source

Gas Chromatography‐Based Methods for Profiling Volatile Off‐Aroma Compounds in Grain Legumes: A Review

Legume Science, Volume 8, Issue 2, June 2026.
ABSTRACT Instrumental characterisation of the volatile organic compounds (VOCs), responsible for off‐aroma, is mainly centred on gas chromatography‐based techniques. Despite previous reviews that have addressed the chemical compounds and biosynthetic pathways of off‐aroma generation, to date, there is a lack of a comprehensive review that critically ...
Piyumi Chathurangi Wanniarachchi, K. G. Upul Kumarasinghe, Mauro Mocerino, Ranil Coorey   +3 more
wiley   +1 more source

Principais técnicas de preparo de amostra para a determinação de resíduos de agrotóxicos em água por cromatografia líquida com detecção por arranjo de diodos e por espectrometria de massas

Química Nova, 2011
The determination of pesticide residues in water samples by Liquid Chromatography require sample preparation for extraction and enrichment of the analytes with the minimization of interferences to achieve adequate detection limits.
Sergiane Souza Caldas, Fábio Ferreira Gonçalves, Ednei Gilberto Primel, Osmar Damian Prestes, Manoel Leonardo Martins, Renato Zanella   +5 more
doaj   +1 more source

Development of a Dispersive Liquid–Liquid Microextraction Procedure for Biodegradation Studies on Nonylphenol Propoxylates Under Aerobic Conditions [PDF]

, 1924
Volume: 31Start Page: 7End Page ...
Agnieszka Zgoła-Grześkowiak
core   +3 more sources

Experimental methods in chemical engineering: Atomic absorption spectrometry—AAS

The Canadian Journal of Chemical Engineering, Volume 104, Issue 5, Page 2206-2224, May 2026.
Abstract Elements absorb electromagnetic radiation (light) of a specific wavelength in proportion to the number of atoms in its path. As the atoms absorb this light energy, electrons rise from the ground state to an excited state. In atomic absorption spectrometry (AAS), high temperatures produce clouds of atoms from the sample (atomization) and ...
Emily Cintia Tossi de A. Costa, Jildimara de Jesus Santana, Viviane de Oliveira Campos, Felipe Fernandes Barbosa, Gregory S. Patience   +4 more
wiley   +1 more source

Current Trends in Fully Automated On-Line Analytical Techniques for Beverage Analysis

Beverages, 2019
The determination of target analytes in complex matrices such as beverages requires a series of analytical steps to obtain a reliable analysis. This critical review presents the current trends in sample preparation techniques based on solid phase ...
Karen Mejía-Carmona, Marcela Jordan-Sinisterra, Fernando M. Lanças   +2 more
doaj   +1 more source

GC × GC‐TOF MS and Sensory Profiling of Aroma Compounds in Magnolia Species: Effects of Processing Methods on Volatile Retention in M. wufengensis

Flavour and Fragrance Journal, Volume 41, Issue 3, Page 487-503, May 2026.
The first comparative analysis of Magnolia scents reveals that M. wufengensis is characterised by a high aldehyde content, exhibiting a fresh, sweet, and fruity fragrance profile. Furthermore, freeze‐drying preserves 6.7 times more 2‐nonenal compared to shade‐drying, highlighting its superior efficacy in retaining key volatile compounds.
Xiaole Wang, Zhonghua Du, Lei Xu, Junjie Hu, Tao Xiong, Chiqing Chen, Lichun Ye, Zhaohua Shi   +7 more
wiley   +1 more source