Sonia Gómez-Lavín

Publications (1)1.63 Total impact

• Source

  Available from: Angel Irabien

  Article: Assessment of PCDD/Fs and PCBs in Sediments from the Spanish Northern Atlantic Coast

  Sonia Gómez-Lavín, Daniel Gorri, Ángel Irabien
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  ABSTRACT: Surface coastal sediments (0–10cm) collected from three natural environments on the Spanish Northern Atlantic Coast were analyzed so as to determine concentrations of 6 marker polychlorinated biphenyls (PCBs), 12 dioxin-like PCBs (dl-PCBs) and 17 polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans (PCDD/Fs). An analytical procedure based on Soxhlet extraction followed by an automated cleanup and final high-resolution gas chromatography coupled to high-resolution mass spectrometry was applied for the determination of the persistent organic pollutants. Marker PCB levels ranged from 385.5 to 4,060.9pg/g dry weight (d.w.) showing a similar congener pattern in all sediments dominated by the less volatile congeners PCB 153 and PCB 138. Linear correlations were found between marker and dl-PCBs. Toxicity equivalent values were calculated for PCDD/Fs and dl-PCBs reaching its maximum at 0.52pg WHO1998-TEQ/g d.w., with an average dl-PCBs contribution on the toxicity of the samples of 75%, and showing to be in good agreement with background levels in the North-East Atlantic Ocean Coasts of nearly 1pg/g WHO1998-TEQ d.w. Dimensionless environmental quality criteria were much lower than 1 indicating the low probability to induce ecotoxicological impacts. KeywordsPCDD/Fs–Dioxin-like PCBs–Marker PCBs–Marine sediments–Cantabrian Coast–Background
  Water Air and Soil Pollution 04/2012; 221(1):287-299. · 1.63 Impact Factor