Results 191 to 200 of about 50,739 (222)

Spme Techniques for Biomedical Analysis

Bioanalysis, 2015
Biomedical analyses of drugs and their metabolites are important in new drug development, therapeutic drug monitoring and forensic toxicology. In these analyses, sample preparation is very important to isolate target compounds from complex biological matrices and markedly influences the reliability and accuracy of determination.
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Tropical Flower Scent Study by SPME

2023
Determining the chemical composition of floral fragrances is of fundamental importance to understanding plant–plant and plant–insect interactions and to study the physiological and ecological aspects of plant adaptation. The diverse chemical features of floral fragrances are described in this chapter, together with several examples of the application ...
Elena E. Stashenko, Jairo René Martínez   +1 more
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Mercury determination — SPME and colorimetric spot test

Talanta, 2001
A colorimetric method to determine mercury >20 ng (absolute) in eluates of soils, wastes and waste water was developed. For the elution and the analytical determination only 40 min are needed and the determination can be carried out on site. Due to the low Austrian and German regulatory limit levels of mercury (0.01 mg/1000 g solid phase) it needs to ...
A, Götzl, W, Riepe
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Development of new SPME fibers by sol–gel technology for SPME-HPLC determination of organometals

Analytica Chimica Acta, 1999
Solid-phase micro-extraction (SPME), has advantages of simplicity, low cost, ease of use and rapid pre-concentration and extraction compared to other sample preparation techniques. The technique has found limited use in high performance liquid chromatographic applications because of the unavailability of fibers that are stable and durable in strong ...
Thompson P. Gbatu, Karen L. Sutton, Joseph A. Caruso   +2 more
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Screening of Tropical Fruit Volatile Compounds Using Solid-Phase Microextraction (SPME) Fibers and Internally Cooled SPME Fiber

Journal of Agricultural and Food Chemistry, 2006
In this study, the optimization and comparison of an internally cooled fiber [cold fiber with polydimethylsiloxane (PDMS) loading] and several commercial solid-phase microextraction (SPME) fibers for the extraction of volatile compounds from tropical fruits were performed.
Eduardo, Carasek, Janusz, Pawliszyn
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Microextraction en phase solide (SPME)

Techniques d'analyse, 2019
La preparation d’echantillon est difficile surtout lorsque le compose d’interet est present en faible quantite dans une matrice complexe. De nombreuses methodes existent pour extraire et preconcentrer les analytes mais elles sont souvent longues ou consommatrices de solvant. La microextraction en phase solide ne presente pas tous ces inconvenients.
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Field air analysis with SPME device

Analytica Chimica Acta, 1999
Solid-phase microextraction (SPME) devices were used for a wide scope of air-monitoring including field sampling and analysis of volatile organic compounds (VOCs), formaldehyde, and particulate matter (PM) in air. Grab (instantaneous) and time-weighted average (TWA) sampling were accomplished using exposed and retracted SPME fibers, respectively ...
Jacek Koziel, Mingyu Jia, Abir Khaled, Japheth Noah, Janusz Pawliszyn   +4 more
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Microestrazione in fase solida (SPME)

2014
La microestrazione in fase solida (SPME, solid-phase microextraction), sviluppata da Pawliszyn e collaboratori nel 1989 (Arthur, Pawliszyn, 1990), e una tecnica che utilizza una fibra di silice fusa, rivestita esternamente da una piccola quantita di fase stazionaria adsorbente, che viene esposta al campione.
PURCARO, Giorgia, MORET, Sabrina, CONTE, Lanfranco   +2 more
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Solid-Phase Microextraction (SPME)

ChemInform, 2005
Gwenola Burgot, Fernand Pellerin
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