Linked Life Data

21336788

Source:http://linkedlifedata.com/resource/pubmed/id/21336788

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
2011-3-31
pubmed:abstractText
This work describes an effective, low solvent consumption and affordable sample preparation approach for the determination of eight UV filters in surface and wastewater samples. It involves sorptive extraction of target analytes in a disposable, technical grade silicone disc (5 mm diameter?×?0.6 mm thickness) followed by organic solvent desorption, large volume injection (LVI), and gas chromatography-mass spectrometry determination. Final working conditions involved overnight extraction of 100-mL samples, containing 10% of methanol, followed by analytes desorption with 0.2 mL of ethyl acetate. The method provides linear responses between the limits of quantification (from 0.003 to 0.040 ng mL(-1)) and 10 ng mL(-1), an intra-day precision below 13%, and low matrix effects for surface, swimming pool, and treated sewage water samples. Moreover, the extraction yields provided by silicone discs were in excellent agreement with those achieved using polydimethylsiloxane-covered stir bars. Several UV filters were found in surface and sewage water samples, with the maximum concentrations corresponding to octocrylene.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Apr
pubmed:issn
1618-2650
pubmed:author
pubmed:issnType
Electronic
pubmed:volume
400
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
603-11
pubmed:meshHeading
pubmed:year
2011
pubmed:articleTitle
Silicone discs as disposable enrichment probes for gas chromatography-mass spectrometry determination of UV filters in water samples.
pubmed:affiliation
Departamento de Química Analítica, Nutrición y Bromatología, Instituto de Investigación y Análisis Alimentario, Universidad de Santiago de Compostela, 15782 Santiago de Compostela, Spain.
pubmed:publicationType
Journal Article, Evaluation Studies