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Matache ICEEM'06

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Paper presented at the 6th International Conference on Environmental Engineering and Management, Balatonalmadi (Hungary), September 2011

Paper presented at the 6th International Conference on Environmental Engineering and Management, Balatonalmadi (Hungary), September 2011

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Matache ICEEM'06 Matache ICEEM'06 Presentation Transcript

  • Food chain biomagnification of heavy metals in samples from the Lower Prut Floodplain Natural Park Presenting author: Marius Lucian Matache , Co-Author(s): Iulia Gabriela David, Alin Tudorache, Gabriel Chisamera, Laurentiu Rozylowicz, Gabriel Lucian Radu Author to whom all the correspondence should be addressed: Marius Lucian Matache, 1 Nicolae Balcescu Blvd., sector 1, 010041 Bucharest, Romania, E-mail: [email_address]
    • (a) to quantify the concentration of some heavy metals in different levels of the Lower Prut wetland food chains, and
    • (b) to assess the extent of these elements transfer from primary producers to primary and secondary consumers.
    Study objectives
  • Study area
    • Lower Prut Floodplain Natural Park - recently established protected area, SE border Romania - Moldova;
    • More than 8,000 ha, significant resources of wildlife&habitats of communitarian importance
    • two European Natura 2000 sites: ROSCI0105 and ROSCI0213;
  • Study area
    • Prut River: more than 900 km, water from a 27,000 km 2 watershed;
    • Agricultural and industrial pollution sources;
    • 4 elements: Cd, Cu, Pb and Zn;
    • Water, sediments, plants, molluscs and fish samples;
    • W&S: 6 sampling transects.
  • Sampling&Methods
    • Samples digestion: HF, HCl, HClO 4 , HNO 3 (sediments) ; HClO 4 , HNO 3 (biological samples);
    • Metal determination: ICP-OES * ;
    • Detection limits for the method
      • 0.1 ppb (Cd, Cu);
      • 1.5 ppb (Pb);
      • 0.5 ppb (Zn) ;
    * Matache et al. (2009), Environmental Monitoring and Assessment , 153 (1), 273-279
  • Metals concentration in water
    • average values – 4 sampling campaigns;
    • quite heterogenous;
    • issues related to Cu and Pb;
  • Metals concentration in sediments MAC – Cu: 40 mg/kg * *
  • Concentration in living organisms Salvinia Elodeea Viviparus Sinanodonta Cyprinus Carassius
    • Positive transfer from Primary to Secondary consumers;
  • Concentration in living organisms
    • EC threshold value for fish samples - 0.05 ppm
    Salvinia Elodeea Viviparus Sinanodonta Cyprinus Carassius
  • Concentration in living organisms
    • significant concentration only in plants;
    Salvinia Elodeea Viviparus Sinanodonta Cyprinus Carassius
  • Concentration in living organisms
    • Values between 14.10 µg/g and 745.28 µg/g;
    • Bevoets et. al (2009) captivity study;
    Salvinia Elodeea Cyprinus Carassius
  • Biomagnification factors (BMF) A1. Salvinia natans A2. Elodeea canadensis B1. Viviparus sp. B2. Sinanodonta woodiana C1. Cyprinus carpio C2. Carassius gibelio
  • Conclusions
    • Zn, Co - dominant trace elements in Prut ecosystem;
    • Zinc concentration in fish samples requires an extended analysis in order to evaluate the ecotoxicological risk involved;
    • Cd and Pb – traces in molluscs and fish samples;
    • partial bioaccumulation appear, but not along entire food chains;
    • Trace elements concentration dynamics - influenced by frequent changes in water level and regime.
  • Acknowledgements
    • Romanian Ministry of Education, Research, Youth and Sport through the PN II project no. 32111/2008.
    • Dr. Marius Matache was supported by the strategic grant POSDRU/89/1.5/S/58852, Project „Postdoctoral programme for training scientific researchers” cofinanced by the European Social Found within the Sectorial Operational Program Human Resources Development 2007 – 2013.