RT journal article
T1 Solvent bar micro-extraction (SBME) based determination of PAHs in seawater samples
A1 López López, José Antonio
A1 Ogalla-Chozas, Esther
A1 Lara Martín, Pablo Antonio
A1 Pintado Herrera, Marina Guadalupe
A2 Química Física
K1 microextraction
K1 PAHs
K1 seawater
K1 hollow fiber
AB Measuring the impact of PAHs in seawater samples is often difficult due to the low concentrations in which they appear and the complexity of the sample matrix. Traditional methods for sample preparation such as liquid-liquid extraction and solid phase extraction require the use of excessive amounts of solvents and reagents, and sample handling. In this work, hollow fiber liquid phase micro-extraction (HFLPME), in the configuration of solvent bar micro-extraction (SBME), was proposed as an environmentally friendly and more effective tool, for the extraction of the 16 priority PAHs from seawater samples. Extraction was conducted using hexane as a solvent. Enrichment factors from 45 to 163 were obtained after 60 min at a stirring rate of 500 rpm in the sample. Moreover, a negative linear relationship was observed between the enrichment factor and the molecular weight of the PAHs. Under optimized conditions, the limits of detection were in the range from 0.21 to 0.82 ng L− 1, the method showed a linear response up to 500 μg L− 1, and the average relative standard deviation for seawater samples spiked with 5 ng L− 1 was 11.6%. After calibration, the SBME was applied to extract PAHs in seawater samples from the Bay of Cadiz (SW Spain), showing an average recovery of 99%. In conclusion, the SBME is an environmentally friendly, one-step alternative for sample preparation in the determination of PAHs in seawater samples.
PB ELSEVIER
SN 0048-9697
YR 2017
FD 2017-11
LK http://hdl.handle.net/10498/30416
UL http://hdl.handle.net/10498/30416
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 11-nov-2026