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PARALLEL ORAL SESSIONS IV – POS.IV.1 THURSDAY, FEB. 21 IV.1 - GREEN CHEMISTRY & ENVIRONMENT Elisa Keating & Jorge Teixeira 58 Levels of Butyltins in Sediment and Suitability of Salt March Plants for Rhizoremediation P. N. Carvalho, P. N. R. Rodrigues, M.C.P. Basto, M.T.S.D. Vasconcelos Implementation of automatic methodologies for quality control of pharmaceutical formulations 48 containing allopurinol based on biocatalysts C. I. C. Silvestre, M. A. Segundo, M. L. M. F. S. Saraiva, J. L. F. C. Lima Azo-dye Orange II degradation by Fenton-like reaction using as catalysts transition metals in carbon 63 supports Filipa Duarte, F.J. Maldonado-Hódar, Luis M. Madeira 86 Monitoring of Biological Remediation of a Soil Polluted with Petroleum Hydrocarbons E. Monteiro, M. N. Couto, M. T. S.D.Vasconcelos Isolation and characterisation of a novel Planctomycete bacterium related to Isosphaera group from 108 a freshwater aquarium Joana Bondoso and Olga Maria Lage 227 Intracellular Gene Regulation via Engineered Nanolipoblockers for Inhibition of Cholesterol Uptake Ekta Patel, Prabhas Moghe
Levels of Butyltins in Sediment and Suitability of Salt March Plants for Rhizoremediation P. N. Carvalho 1,2,* , P. N. R. Rodrigues 1,2 , M.C.P. Basto 1,2 and M.T.S.D. Vasconcelos 1,2 1 Department of Chemistry, Faculty of Sciences, University of Porto, Portugal. 2 CIMAR/CIIMAR – Centre of Marine and Environmental Research, University of Porto, Portugal. * pedro.carvalho@fc.up.pt In recent decades organotin compounds have been extensively used in agriculture and industry, as biocides and polymer stabilizers. Since the 1980s contamination of waters and sediments with tributyltin (TBT), as a results of its application in paint for boats as an antifouling, has been associated to a variety of unexpected malformations and other effects in non-target marine organisms. Therefore, it is necessary to control the application of the legal impositions, ban of TBT from the global fleet, as well as the release of TBT and its degradation products from contaminated areas, as well as study and develop remediation techniques. For the accomplishment of these purposes, accurate and very sensitive analytical methods are required for quantifying trace levels of butyltins (BTs) in various sample matrices. Very recently, a method was developed and validated using headspace solid-phase microextraction as an automated pre-concentration/extraction process followed by gas chromatography separation coupled to tandem mass spectrometry detection. The method was efficiently applied to the determination of TBT and its degradation products dibutyltin and monobutyltin in sediments from Sado River estuary [1]. Concentration values of TBT over the range established by the OSPAR [2] as provisional ecotoxicological assessment criteria that should be used to identify areas of concern were found in the Lisnave area. To investigate the capability of the salt marsh plant Halimione portulacoides to promote BTs degradation, plants were transplanted ex-situ into several pots with sediment from Lisnave area. Identical pots without plants were used as controls. Monitoring of BTs in those sediments [1] was carried out. It was observed that, in the absence of the plant, natural degradation of TBT along eight months was negligible. In contrast, a significant decrease of contamination occurred in the presence of plants, denoting rhizoremediation, despite the low belowground biomass of H. Portulacoides used in the tests. Further studies are in progress, using higher amounts of biomass per experiment, with the purpose to investigate whether the plant participates directly in the BTs degradation, namely incorporating TBT or its metabolites in plant tissues, or it only promotes degradation by sediment microorganisms from the rhizosphere (environment around roots). References: [1] Carvalho, P.N., Pinto, L.F., Basto, M.C.P. and Vasconcelos, M.T.S.D. (2007), Headspace solid-phase micro-extraction and gas chromatography-ion trap tandem mass spectrometry method for butyltin analysis in sediments: Optimization and validation, Microchem. J., 87, 147. [2] Joint Meeting of the Oslo and Paris Commissions (1997), Oslo and Paris convention for the prevention of marine pollution, Annex 6, Joint Meeting of the Oslo and Paris Commissions, Brussels. Acknowledges: Project POCTI/CTA/48386/2002 financed by FCT, Portugal 84
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IJUP08 First Meeting of Young Resea
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Adrián Silva Dinis Cayolla Ribeiro
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PERMEABILITY CHARACTERISTICS OF HIG
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THE COURTYARD AND SIZA’S HOUSES__
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INTRACELLULAR GENE REGULATION VIA E
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COPPER(II)/CIPROFLOXACIN COMPLEXES:
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INFLUENCE OF BEER ANTIOXIDATIVE PRO
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INFORMATION SYSTEMS ABOUT MATERIALS
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INTERDISCIPLINARY ORAL SESSIONS - I
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Construction of a learning unit in
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Angiogenesis modulation by catechin
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Alfonso X’s General Estoria and t
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Alternative User Interfaces for Gam
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Treatment of Myasthenia gravis with
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Automatic Emotion Assessment throug
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PARALLEL ORAL SESSIONS I - POS.I.1
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Antitumor and antifungal activities
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Synthesis and Determination of Phys
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The knowledge-based economy as a he
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The Space of Intervals. The inner s
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Chromium remediation using zero val
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DFT STUDY ON THE ABILITY OF CALIX[2
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Steady state and lifetime chemical
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MeO Synthesis, Structural Elucidati
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Interactions of sulindac and its me
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Characterization of Urea-Formaldehy
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Investigation of the Interactions b
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Adenosine regulates differentiation
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Pravastatin Quantification using Sq
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EDIFICIO D 2D19-1 D.T. 2D63-1 C1 2D
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