Determination of polybrominated diphenyl ethers in water at ng/L level by a simple DLLME-GC-(EI) MS method

• Type: Article in International Scientific Journal
• Date: 2015

Authors

Luís M. Madeira (Author) FEUP; Mónica S. F. Santos (Author) FEUP; José Luís Moreira (Author) FEUP; Arminda Alves (Author) FEUP

Journal

Title: Journal of Analytical Chemistry

Vol. 70 No. 11

Pages: 1390-1400

ISSN: 1061-9348

Publisher: Pleiades Publishing

Indexing

ISI Web of Knowledge - 2 Citations

ISI Web of Science

Scopus - 5 Citations

Scientific classification

CORDIS: Technological sciences > Engineering > Chemical engineering

FOS: Engineering and technology > Chemical engineering

Associated Projects

ACQUASAFE - Segurança química em sistemas de abastecimento de água

SECUREAU - Security and decontamination of drinking water distribution systems following a deliberate contamination

Other information

Authenticus ID: P-00G-SDW

DOI: 10.1134/s106193481511012x

Abstract (EN): Dispersive liquid-liquid microextraction (DLLME) is an extraction procedure gaining popularity in the recent years due to the easiness of operation, high enrichment factors, low cost and low consumption of organic solvents. This extraction method, prior to gas chromatography with mass spectrometry detection (GC-MS), was optimized for the determination of polybrominated diphenyl ethers (PBDEs) in aqueous samples. These were extracted with chlorobenzene (extraction solvent) and acetonitrile (dispersive solvent), allowing an enrichment factor of about 470 for BDE-100. The calibration curve for BDE-100 was linear in the range of 0.005-10 mu g/L, with an average reproducibility of 12% (RSD, %). The LOD, calculated by the signal-tonoise ratio, was 0.5 ng/L for BDE-100 and the recovery ranged from 91-107% for all spiked samples. Relative expanded uncertainty was concentration-dependent, reaching high values near the limit of quantification and decreasing until 14% for concentrations higher than 1 mu g/L of BDE-100. The dispersive liquid-liquid microextraction combined with gas chromatography with mass spectrometry detection (DLLME-GC-MS) method could be successfully applied to the determination of other PBDEs in water samples.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 11