Results 91 to 100 of about 37,813 (234)
Journal of Mass Spectrometry, Volume 61, Issue 10, October 2026.ABSTRACT Purification of crude plant extracts by solid‐phase extraction (SPE) is assumed to reduce matrix effect in phytohormone quantification by LC–MS/MS, but its efficacy is rarely assessed. We used postextraction spiking of isotope‐labeled phytohormones to estimate matrix effect, recovery, and processes efficiency in extracts prepared according to ...
Carlos A. Juarez Guzman +3 more
wiley +1 more source
Avaliação da qualidade dos sedimentos por meio e biomarcadores geoquímicos e elementos-traço em amostras do estuário do Rio Itajaí-Açu e determinação de contaminantes em matrizes de resíduos sólidos [PDF]
, 2014 Tese (doutorado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas, Programa de Pós-Graduação em Química, Florianópolis, 2014.O sistema estuarino do rio Itajaí-Açu, localizado na região Sul do Brasil, é afetado por ...
Frena, Morgana
core
Advanced Analytical Microextraction Techniques and There Applications: A Review [PDF]
, 2016 In recent years, substantial research has been devoted to the development of new liquid-liquid microextraction methods for sample preparation. These microextration methods were performed by several techniques such as: liquid-phase microextraction (LPME ...
Belay, Kassa
core +1 more source
Journal of the Science of Food and Agriculture, Volume 106, Issue 13, Page 8189-8201, October 2026.Abstract BACKGROUND Zingiber officinale Roscoe is widely cultivated as a spice and functional food, generating substantial amounts of aerial biomass that is commonly discarded after harvest. Within a circular‐economy framework, this study investigated the phytotoxic potential of Z.
Sara Vitalini +7 more
wiley +1 more source
Microextraction and gas chromatographic determination of parabens. [PDF]
, 2012 Parabens are effective antibacterial and anti-fungal agents and are used extensively as preservatives in cosmetics, food and pharmaceutical products. Because of the presence of parabens in the environment and their negative effects on human health, there
Prichodko, Aleksandra,
core
Separations, 2019 Through the development of solid phase microextraction (SPME) technologies, thin film solid phase microextraction (TF-SPME) has been repeatedly validated as a novel sampling device well suited for various applications.
Ronald V. Emmons +2 more
doaj +1 more source
Plant-Environment Interactions, Volume 7, Issue 5, October 2026.ABSTRACT Global population growth and climate change are placing unprecedented pressure on food systems, threatening crop productivity and nutritional quality. Vertical farming, as a form of totally controlled‐environment agriculture, offers an innovative approach to optimizing plant growth and enhancing the quality of high‐value crops such as basil ...
Martina Pičmanová +8 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
Desenvolvimento de metodologia analítica para a determinação de halofenóis e haloanisóis em papel kraft por microextração em fase sólida e cromatografia gasosa [PDF]
, 2004 TCC (graduação) - Universidade Federal de Santa Catarina. Centro de Ciências Físicas e Matemáticas. Curso de Química.A contaminação de papéis por halofenóis e haloanisóis tem trazido problemas para a indústria de papel, devido ao fato de baixas ...
DEBASTIANI, Rafael
core
Bihdāsht-i Mavādd-i Ghaz̠āyīDue to the widespread use of pesticides to protect agricultural products around the world and the accumulation of residues of these substances in plant tissue, most of the products that have been exposed to pesticides contain amounts of pesticide ...
Fatemeh Nasiri +3 more
doaj