Heavy Metals in the Danube River in Yugoslavia

Marjanovic, P.; Miloradov, Mirjana Vojinović; Cukic, Z.

doi:10.1007/978-3-642-79316-5_18

Cited by 3 publications

(2 citation statements)

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“…In the water column, concentrations of dissolved trace metals tend to vary by several orders of magnitude due to the large number of variables involved in the dynamics of the process, such as daily and seasonal variations in water flow, local discharges of urban and industrial effluents, variations in pH and redox conditions, detergent concentrations, salinity and temperature (Förstner and Wittmann, 1983). Despite these variations, the determination of concentrations of dissolved metals in water is a useful tool for the evaluation of the degree of contamination of a given ecosystem that has been employed by researchers throughout the world (Garbarino et al, 1995;Hurley et al, 1995Hurley et al, , 1998Marjanovic et al, 1995;Watras et al, 1995;Smith et al, 1996;Mastrine et al, 1999).…”

Section: Resultsmentioning

confidence: 99%

Metal Levels in Water and the Muscle Tissue of Fishes in the Cachorros River, São Luís Island, State of Maranhão, Brazil

Santos.¹,

Azevedo²,

Ferreira³

et al. 2019

Appl. Ecol. Env. Res.

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The present study evaluates physicochemical variables, perform a microbiological analysis as well as determine heavy metal concentrations in the water and muscle tissue of fishes from the Cachorros River. The analysis of metal concentrations in the estuarine water revealed high levels of Fe and Al, with values above the limits established by Brazilian legislation. The concentration of total coliforms and thermotolerant coliforms tended to be higher in the rainy season. Regarding metal concentrations in the muscle tissue of fishes, high levels of Pb and Cd were found, especially in carnivorous and detritivorous species, with values above the limits established by national legislation. Two-factor analysis of variance revealed that only Pb demonstrated a significant interaction between seasonality and the feeding habits of the fish fauna, with higher concentrations of this metal in the dry season among detritivorous species in comparison to herbivorous species. The present findings demonstrate the contamination pattern that has been occurring in the Cachorros River, as evidenced by the concentration of trace metals in both the water and muscle tissue of fishes, which are an important source of protein as well as an economic resource for the population of this river basin.

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Section: Resultsmentioning

confidence: 99%

Metal Levels in Water and the Muscle Tissue of Fishes in the Cachorros River, São Luís Island, State of Maranhão, Brazil

Santos.¹,

Azevedo²,

Ferreira³

et al. 2019

Appl. Ecol. Env. Res.

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“…Os primeiros casos sérios da doença de Minamata apareceram por volta de 1956, manifestados essencialmente por distúrbios neurológicos (Harada, 1995 (Förstner & Wittmann, 1983). Apesar de tais variações, a determinação das concentrações dos metais dissolvidos na água constitui uma ferramenta útil na avaliação do grau de contaminação de um determinado escossistema e tem sido utilizada por diferentes pesquisadores em todo o mundo (Barak & Mason, 1989;Garbarino et al, 1995;Hurley, et al, 1995Hurley, et al, , 1998Marjanovic et al, 1995;Watras et al, 1995;Smith et al, 1996;Mastrine et al, 1999 Förstner, 1984;Foster & Charlesworth, 1996). Portanto, a associação dos metais ao MPS é responsável por grande parte do transporte de metais em corpos d'água (Salomons & Förstner, 1984).…”

Section: Mercúriounclassified

"Estudo comparativo das concentrações de cádmio, chumbo e mercúrio em seis bacias hidrográficas do Estado de São Paulo".

Tomazelli¹

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, pela orientação, amizade e confiança durante todos esses anos de trabalho. À Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP-Processo 99/07966-9) pela bolsa concedida. Ao Prof. Dr. Francisco José Krug por ter aberto as portas de seu laboratório, me orientando no fascinante mundo da química analílica, e pela correção de parte deste manuscrito. Ao Valbert que sempre esteve ao meu lado, apoiando minhas escolhas e decisões profissionais, e entendendo minhas constantes ausências. Aos meus queridos pais (Jair e Aparecida) e ao meu irmão Marcio pelo apoio incondicional, amor e constante incentivo. À amiga Daniela M. L. da Silva pelas ajudas nas coletas de campo, preparo de amostras, análises dos dados, correção deste manuscrito e, é claro, pela preciosa amizade e boa convivência. Ao amigo Marcos S.M.B. Salomão pelos auxílios nas coletas, na interpretação dos resultados, discussão, e pelos bons momentos no laboratório, no campo, e principalmente, pela paciência com essa sua amiga "mala". À minha "ajudante" de laboratório, Adilaine Freitas Ercolin, pelo auxílio essencial para a conclusão deste estudo. À amiga Iolanda Rufini (Tatinha) pela orientação e ajuda nos trabalhos laboratoriais, pela correção deste manuscrito, e pela preciosa amizade. Aos amigos Ivan Vieira e Sandra Furlan Nogueira pelas ajudas indispensáveis nas coletas de campo e no preparo das amostras. Aos amigos especiais do CENA

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Location and characterisation of pollution sites by principal component analysis of trace contaminants in a slightly polluted seasonal river: a case study of the Arenales River (Salta, Argentina)

Lomniczi¹,

Boemo²,

Musso³

2010

WSA

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Principal component analysis (PCA) was used to deduce the common origin of trace contaminants in a slightly contaminated, strongly seasonal river of low-average discharge, aiming to ascertain the type of the pollution. Splitting of data into categories according to specific conductance was essential to reach conclusions. Dry-season data allowed the pinpointing of polluting sites by means of the biplots resulting from the representation of the scores on the components. Concentrations corresponding to the wet seasons yielded no useful results probably due to the high percentage of data below detection limits for 2 of the 6 variables. The Arenales River in NorthWest Argentina was monitored by means of 19 sampling campaigns between 2003 and 2005 comprising two hydrological cycles, at seven locations along a 25 km section of the river course across the city of Salta. Pollution of the river was not severe, overall mean values in µg/ℓ being: As 1.2; B 490; Cu 4; Fe 92; Pb 13; Zn 83. Simple correlation analysis revealed no significant correlation between these elements. The high positive loadings of variables B and As concentrations on the first principal component and the biplots indicate that their main common point sources are boron mineral deposits still existing in the urban area. Interpretation of the biplots shows that Cu, Fe and Zn contamination also originated at point sources, the contribution of the sewage treatment plant being negligible.

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Heavy Metals in the Danube River in Yugoslavia

Cited by 3 publications

References 0 publications

Metal Levels in Water and the Muscle Tissue of Fishes in the Cachorros River, São Luís Island, State of Maranhão, Brazil

Metal Levels in Water and the Muscle Tissue of Fishes in the Cachorros River, São Luís Island, State of Maranhão, Brazil

"Estudo comparativo das concentrações de cádmio, chumbo e mercúrio em seis bacias hidrográficas do Estado de São Paulo".

Location and characterisation of pollution sites by principal component analysis of trace contaminants in a slightly polluted seasonal river: a case study of the Arenales River (Salta, Argentina)

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