Results 71 to 80 of about 48,050 (141)

Use of a new enrichment nanosorbent for speciation of mercury by FI-CV-ICP-MS [PDF]

open access: yes, 2015
Mercury is one of the most toxic environmental pollutants and its effects on human and ecosystem health are well known. All mercury species are toxic, with organic mercury compounds generally being more toxic than inorganic species.
Cano-Pavón, José Manuel   +3 more
core   +1 more source

Chromatography of wine [PDF]

open access: yes, 2013
The objectives of the review are the collection, concise description and evaluation of the various chromatographic technologies applied for the separation and quantitative determination of macro- and microcomponents present in ...
Cserháti, Tibor, Szőgyi, Mária
core  

Valproic acid extraction methods in human samples for gas chromatography analysis: a review

open access: yesDrug Analytical Research
Valproic acid (VPA) is widely used as an important drug for the treatment of epilepsy, seizures, bipolar disorders, and migraines. However, its narrow therapeutic range lead to risks of unintentional poisoning and potential suicide.
Juliana Blume de Oliveira   +2 more
doaj   +1 more source

Identification of the most of specific volatile metabolites by gas chromatography in the samples of exhaled breath of lung cancer patients and healthy volunteers [PDF]

open access: yes, 2017
the analysis of the component composition of exhaled breath. In this work, the most of specific volatile metabolites were determined based on the component composition of exhaled breath using gas chromatography in conjunction with solid phase ...
Скоморощенко, В. И.
core  

Headspace solid-phase microextraction-gas chromatography-quadrupole mass spectrometric methodology for the establishment of the volatile composition of Passiflora fruit species [PDF]

open access: yes, 2009
Dynamic headspace solid-phase microextraction (HS-SPME) followed by thermal desorption gas chromatography-quadrupole mass spectrometry analysis (GC-qMS), was used to investigate the aroma profile of different species of passion fruit samples.
Câmara, J. S.   +2 more
core   +1 more source

Analysis of Volatile Components of Cape Gooseberry (Physalis peruviana L.) Grown in Turkey by HS-SPME and GC-MS

open access: yesThe Scientific World Journal, 2014
Volatile components in cape gooseberry fruit at ripe stage were collected using headspace-solid phase microextraction, and analyzed by gas chromatography-mass spectrometry.
Murat Yilmaztekin
doaj   +1 more source

Micelle assisted thin-film solid phase microextraction: a new approach for determination of quaternary ammonium compounds in environmental samples [PDF]

open access: yes, 2014
Determination of quaternary ammonium compounds (QACs) often is considered to be a challenging undertaking owing to secondary interactions of the analytes’ permanently charged quaternary ammonium head or hydrophobic tail with the utilized lab-wares ...
Boyaci, Ezel, Pawliszyn, Janusz
core   +1 more source

Principles and calibration of solid phase microextraction fibre (passive sampler) for measurements of airflow and air infiltration in dwellings [PDF]

open access: yes, 2010
Tracer gas techniques have been the most appropriate experimental method of determining airflows and ventilation rates in houses. However, current trends to reduce greenhouse gas effects have prompted the need for alternative techniques, such as passive ...
Essah, Emmanuel Adu
core   +1 more source

Rapid, Specific Determination of Iodine and Iodide by Combined Solid-Phase Extraction/Diffuse Reflectance Spectroscopy [PDF]

open access: yes, 2002
A new, rapid methodology for trace analysis using solid-phase extraction is described. The two-step methodology is based on the concentration of an analyte onto a membrane disk and on the determination by diffuse reflectance spectroscopy of the amount of
Arena, Matteo   +2 more
core   +1 more source

Headspace solid phase microextraction (spme) analysis of flavor compounds in wines. Effect of the matrix volatile composition in the relative response factors in a wine model [PDF]

open access: yes, 2001
The application of headspace solid phase microextraction (SPME) for flavor analysis has been studied. Headspace SPME sampling was tested for nine common wine flavor compounds in 10% (v/v) aqueous ethanol: linalool, nerol, geraniol, 3-methyl-1-butanol ...
Barros, António S.   +4 more
core   +1 more source

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