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Lead-zinc mining and home-grown foodstuffs (Eastern FYR Macedonia)
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Orientador(es)
Resumo(s)
Mining accompany our civilization since evolution. Since the “Copper (Chalcolithic) Age” and
later “Golden Age”, mining activities have created great wealth. Unfortunately, beside wealth the
exploitation of metal rich ores, have been almost always correlated with a negative impact to the
nearby ecosystems. In this study a broad area around the active Pb-Zn Sasa mine (NE FYR Macedonia)
was characterized, to evaluate the contents of some Potentially Toxic Elements (PTE). The PTE were
determined in the surrounding fresh waters (lake and rivers), soils and the home-grown vegetables.
The evaluation of the potential hazardous ef ects of the PTE, especially on humans, is a key goal.
The PTE’s were determined by ICP-AES and ICP-MS. Furthermore also detailed questionnaires
were applied among the local inhabitants. Sequential extraction analyses of selected soil samples
revealed that the majority of PTE was bounded to water soluble and exchangeable fraction, which
shows that those elements (Ag, As, Cd, Cu, Mo, Ni, Pb, Sb and Zn) are therefore very easily mobile
and consequently available to plants. According to the applied questionnaires, the consumption of
home-grown foodstuf s is high, and certain vegetables, such as tomatoes, peppers, salads, etc., are
consumed every day or even more than once a day. Chemical evaluation of PTE in home-grown
vegetables revealed that the most crucial PTE’s (those which heavily exceed upper allowable limits)
are Cd, Co, Cu, Pb and Zn, and are closely followed by Cr and As. The calculated Health Risk Index
(HRI) shows extremely high estimated values, both for adults and children. As the study area is
surrounded by rich metallogenic ore deposits, is expected that the natural background is slightly
higher than elsewhere. Nevertheless, the concentrations of PTE’s in waters used for irrigation which
were increased and the wind-blown (aeorogenic) PTE’s pollution from the nearby tailings dam, both
increases the PTE contents in the studied foodstuf s. Thus, the health of inhabitants in this area is
of high concern.
Descrição
Comunicação oral da qual só está disponível o resumo.
Palavras-chave
Mining Human health
Contexto Educativo
Citação
VRHOVNIK, P. [et al.] (2015) - Lead-zinc mining and home-grown foodstuffs (Eastern FYR Macedonia). In International Conference on Medical Geology 6th, Aveiro, 2015 - MedGeo2015: book of abstracts. Aveiro : UA. p. 131.
Editora
Universidade de Aveiro