Cellulose membrane modified with polypyrrole as an extraction device for the determination of emerging contaminants in river water with gas chromatography-mass spectrometry.
J Sep Sci
; 41(13): 2790-2798, 2018 Jul.
Article
em En
| MEDLINE
| ID: mdl-29785750
In this study, a simple, efficient, and reusable device based on cellulose membranes modified with polypyrrole was developed to extract 14 emerging contaminants from aqueous matrices. For chemical polymerization, a low-cost cellulose membrane was immersed in 0.1 mol/L pyrrole and 0.5 mol/L ammonium persulfate for 40 min in an ice/water bath. The cellulose membranes modified with polypyrrole were accommodated in a polycarbonate holder suitable for solid-phase extraction disks. Solid-phase extraction parameters that affect extraction efficiency, such as sample volume, pH, flow rate, and desorption were optimized. Subsequently, determination of target compounds was performed by gas chromatography with mass spectrometry. The linear range for analytes ranged from 0.05 to 500 µg/L, with coefficients of determination above 0.990. The limits of quantification varied between 0.05 and 10 µg/L, with relative standard deviations lower than 17%. The performance of the proposed cellulose membranes modified with polypyrrole device for real samples was evaluated after extraction of emerging contaminants from a river water sample from the city of Curitiba, Brazil. Bisphenol A (6.39 µg/L), caffeine (17.83 µg/L), and paracetamol (19.28 µg/L) were found in these samples.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Poluentes Químicos da Água
/
Celulose
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Extração em Fase Sólida
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Cromatografia Gasosa-Espectrometria de Massas
Tipo de estudo:
Evaluation_studies
País/Região como assunto:
America do sul
/
Brasil
Idioma:
En
Revista:
J Sep Sci
Ano de publicação:
2018
Tipo de documento:
Article
País de afiliação:
Brasil
País de publicação:
Alemanha