Heavy Metals Contamination in Century-Old Manmade Technosols of Hope Bay, Antarctic Peninsula

Autor(es)

Bueno Guerra, Marcelo Braga ^[1] ; Schaefer, Carlos Ernesto G. R. ^[2] ; Rosa, Paula de Freitas ^[1] ; Simas, Felipe N. B. ^[2] ; Pereira, Thiago T. C. ^[2] ; Pereira-Filho, Edenir Rodrigues ^[1]

Afiliação do(s) autor(es)

^[1] Univ Fed Sao Carlos, UFSCar, Grp Appl Instrumental Anal, Dept Chem, BR-13565905 Sao Carlos, SP - Brazil

^[2] Univ Fed Vicosa, UFV, Dept Soil Sci, BR-36570000 Vicosa, MG - Brazil

• Tipo de documento: Artigo Científico
• Fonte: WATER AIR AND SOIL POLLUTION; v. 222, n. 1-4, p. 91-102, NOV 2011.
• Citações Web of Science: 18

Resumo

Technosols are anthropogenic soils that may be strongly impacted by heavy metal deposition, which have not yet been described in Antarctica. In this paper, we present a chemical study of what is supposedly the oldest manmade soil from Antarctic Peninsula, developed in the vicinity of Trinity House and Nordenskjold Hut at Hope Bay. Chemical and morphological soil attributes indicate that a former ornithogenic site (penguin rookery) was further subjected to human disturbance, following local exploration since 1903. We detected very high amounts of heavy metals such as Cd, Cu, Pb, and Zn. For the most impacted site, pseudototal concentrations of these elements reach 47, 2,082, 19,381, and 5,225 mg kg(-1), respectively. Enrichment factors were calculated using Zr as reference element, and high values were found for these contaminated sites, qualifying some of them as extremely polluted. Also, both the mobilizable and mobile fraction of Cd and Pb indicate the need of intervention in the affected area. These findings are all consistent with the human impacts and strong contamination. Strong positive correlation between the pseudototal concentrations of Cd, Cu, Mn, Ni, Pb, and Zn indicates a similar source of pollution. These soils may represent the oldest Technosols in Antarctic Continent. (AU)

• Processo FAPESP: 07/04515-4 - Avaliação da combinação da espectrometria de absorção atômica com determinação sequencial e a espectrometria de absorção atômica com tubo na chama e aerossol térmico
• Beneficiário: Edenir Rodrigues Pereira Filho
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 09/09481-6 - Avaliação das concentrações de cobre, manganês e zinco em solos da Antártica utilizando extração seqüencial e ferramentas quimiométricas
• Beneficiário: Paula de Freitas Rosa Remiro
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica
• Processo FAPESP: 08/08260-3 - Análises químicas de amostras ambientais da Antártica: determinação espectrométrica de Cd, Cr, Ni e Pb, uso de micro-fluorescência de Raios-X com radiação síncrotron e aplicações de ferramentas quimiométricas
• Beneficiário: Marcelo Braga Bueno Guerra
• Modalidade de apoio: Bolsas no Brasil - Doutorado Direto