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CHEMICAL DEVELOPMENT
ELEMENTS V ARIA TION IN LEA VES WITH DIFFERENT STAGES OF CISTUS PLANTS FROM S. DOMINGOS MINE SOUTH PORTUGAL
M. J. Batistal,
0. Gonzalez-Fernandez2,
AREA,
M. M. Abreu3, L. Carvalho4
lLNEG, Estradada Portela,Ap. 7586, 2721-866Alfragide, Portugal,joao.batista@ineti.pt; 2X-RayAnalytical Applications Laboratory, Institute of Earth Sciences"JaumeAlmera"-CSIC, Luis Sole i Sabaris, sin, 08032 Barcelona,Espanha,ogonzalez@ija.csic.es; 3UnidadedeInvestiga98.ode Quimica Ambiental, Instituto Superior de Agronomia, UniversidadeTecnica de Lisboa (TULisbon), 1349-017Tapadada Ajuda, Portugal,manuelaabreu@isa.utl.pt; 4CFA-UL, Av. Prof. GamaPinto, 21649-003Lisboa, Portugal
Abstract Soils and leaves of Cistus ladanifer L. and Cistus salviifolius L. in different stagesof development (young and mature) were sampled in different sites of the S. Domingos mine. The soils are thin and were developed on heterogeneousmaterials of metallurgical slags, gossanousmaterials and weatheredhost rocks. In general, mature leaveshave higher concentrationsof As, Cu, Fe, Mn, Pb and Zn than young leaves.Nevertheless,in Moitinhos site the young leaves have higher concentrationsof As, Cu and Mn than mature leaves. Near the mine buildings C. ladanifer leaves have higher concentrationsof As in mature leaves than C. salviifolius. The Pb concentrationsin mature leaves are significantly higher and C. ladanifer contain two fold more than C. salviifolius leaves. Cistus plants show different behaviour on the trace elementsuptake and translocation.This knowledge is useful in order to implement remediationprogramsin mine areasof the Mediterraneanregion using thesepioneerplants. Keywords: Pyrite abandonedmine; Cistusladanifer; Cistus salviifolius; Phytoremediation.
Resumo Solos e folhas novas e madurasde Cistus ladanifer L. e de Cistus salviifolius L. foram amostradosem diferentes locais da mina de S. Domingos. As plantas cresciamem solos esqueleticosdesenvolvidossobre esc6rias,materiais de gossane rochas encaixantesalteradas.Geralmente,as folhas madurasapresentavamconcentra9oesmais altas de As, Cu, Fe, Mn, Pb e Zn, mas no monte de Moitinhos as folhasjovens apresentavamconcentra9oesmais elevadasde As, Cu e Mn. Junto as oficinas os valores de As nas folhas madurasde C. ladanifer s8.omais elevadosdo que os do C. sahliifolius. Tambem o Pb apresentavaconcentra9oesmais altas (cerca do dobro) nas folhas maduras do C. Ladanifer. As duas especiesdo genero Cistus apresentamcomportamento diferente relativamente a absor98.oe transloca98.odos elementosvestigiais. Este conhecimento e fundamental para o uso destasplantas pioneiras em programasde recupera98.o de areasmineiras na regi8.omediterranica. Palavraschave:Mina abandonadade pirite; Cistus ladan{fer; Cistus salviifolius; Fitorremedia98.o
Introduction The EU Strategy for Soil Protection (COM 2002 179) and the Water Framework Directive (2000/60/EC) combined with the Convention on Biological Diversity from the United Nations Environmental Programme 20 10 show the importance that the European Community presently addresses to the preservation of soils, waters and local ecosystems. Mining sites through Mine
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