Results 101 to 110 of about 5,010,052 (177)

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]

open access: yes, 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  

Advances in Solid-Phase Microextraction

open access: yes, 2020
Analysis imposes substantial challenges, especially when dealing with analytes present at trace levels in complex matrices. Although modern instrumentation has simplified analyses and makes them more reliable, its use is only the last step of the whole ...

core   +1 more source

Single-drop microextraction followed by in-drop derivatization for the analysis of organic compounds by gas chromatography [PDF]

open access: yesPakistan Journal of Analytical & Environmental Chemistry, 2007
Microextraction has become a buzz word in the recent years in the scientific area of analytical chemistry. Over the last decade, newer miniaturised approaches to liquid extraction have emerged, resulting in solvent and sample savings and less time ...
Constantine Stalikas
doaj  

Green Microextraction Techniques for the Determination of Cosmetic Ingredients and Contaminants

open access: yesAnalytica
The rapid growth and diversification of the cosmetic industry have led to increasingly complex formulations containing numerous bioactive ingredients, excipients, and synthetic additives, often delivered through advanced nanostructured systems.
Marianna Ntorkou   +3 more
doaj   +1 more source

Determinação de benzeno em bebidas comerciais [PDF]

open access: yes, 2008
TCC (graduação) - Universidade Federal de Santa Catarina. Centro de Ciências Físicas e Matemáticas. Curso de Química.Neste trabalho é apresentado o desenvolvimento de um método para a análise de benzeno em bebidas comerciais.
SANCHEZ, André Brunelli
core  

Green and Emerging Microextraction Strategies for Bioanalytical Determination of Hormones: Trends, Challenges, and Applications

open access: yesMolecules
Accurate and sensitive determination of hormones in biological matrices is essential for clinical diagnostics, therapeutic monitoring, and endocrine research.
David Vicente-Zurdo   +2 more
doaj   +1 more source

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