A Study of Metal Distribution from Lignite Fuels Using Trees as Biological Monitors

Sawidis, Thomas; Chettri, Mukesh Kumar; Papaioannou, Alexandra; Zachariadis, Georgios; Stratis, J. A.

doi:10.1006/eesa.2000.2001

Cited by 94 publications

(72 citation statements)

References 22 publications

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“…A metodologia utilizada neste trabalho, para o preparo das amostras é similar àquela recomendada por SAWIDIS et al 30 . Em resumo, massas em torno de 0,5 a 2,0 g de material seco (de acordo com o tamanho do siri) foram pesadas em uma balança digital marca QUIMIS (0,0001 g).…”

Section: Introductionunclassified

Avaliação de contaminação por metais pesados em amostras de siris azuis

Virga¹,

Geraldo²,

Santos³

2007

Ciênc. Tecnol. Aliment.

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ResumoMetais pesados por não serem biodegradáveis podem se acumular nos tecidos vivos ao longo da cadeia alimentar chegando ao ser humano principalmente por meio da alimentação. Siris e outros organismos que se alimentam de matéria orgânica existente em sistemas aquáticos, podem absorver uma carga maior destes elementos tóxicos e assim, representar um risco potencial à saúde da população da região. Neste trabalho, foram realizados estudos quantitativos sobre o teor de Pb, Cd, Cr, Zn e Cu em amostras (n = 144) de siris azuis do gênero Callinectes sp., coletados ao longo do rio Cubatão, utilizando um Espectrofotômetro de Absorção Atômica por Chama (FSAA). Exceto para o Cr, onde o valor médio obtido neste trabalho ficou acima do estabelecido para qualquer tipo de alimento pela legislação brasileira, todos os outros resultados estiveram abaixo dos limites máximos recomendados por agências de saúde. Uma discussão é apresentada sobre a contribuição ao valor provisório de ingestão diária tolerável (PTDI), sugerido pela Organização Mundial de Saúde, devido ao consumo de carne de siri pela população. Palavras-chave: metal pesado; contaminação; siri-azul; Callinectes sp.; espectrometria por absorção atômica. AbstractBecause they are nonbiodegradable, heavy metals can accumulate in the living tissues along the food chain, reaching humans mainly through food. Swimming crabs and other organisms which feed on organic matter that is present in aquatic systems can ingest high loads of these toxic elements; hence, they pose a potential risk to the health of regional populations. This work involved a quantitative analysis of Pb, Cd, Cr, Zn and Cu in blue crab specimens of the genus Callinectes sp. (n = 144) collected along the Cubatão river, using Flame Atomic Absorption Spectrophotometry (FAAS). Except for Cr, whose average value exceeded the limit allowed for any type of food by Brazilian regulations, all the other elements fell below the maximum content recommended by health agencies. This paper also discusses the contribution of crab meat consumed by the population to the provisional tolerable daily intake (PTDI) suggested by the World Health Organization.

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Section: Introductionunclassified

Avaliação de contaminação por metais pesados em amostras de siris azuis

Virga¹,

Geraldo²,

Santos³

2007

Ciênc. Tecnol. Aliment.

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“…Consequently, further research is required on how pruning influences the detention of heavy metals. Sawidis et al, (2001), found for Robinia pseudoacacia also for Albizia julibrissin that the present of aphids make leaves surface more adhesive having as result the easier detention of heavy metals.…”

Section: Discussionmentioning

confidence: 97%

“…Cupressus arizonica's needles are microscopic, abundant, blade shape, aquamarine, with obvious gland in ridge and with white resin (Athanasiadis, 1986). Sawidis et al (2001) claims that the rough surface of needles and the presence of resin make surface adhesive contribute to the increase of heavy metals concentration. The higher manganese (Mn) and zinc (Zn) mean concentrations were measured in Albizia julibrissin's leaves at the upper crown part.…”

Section: Discussionmentioning

confidence: 99%

Selection of forest species for use in urban environment in relation to their potential capture to heavy metals

Samara

Tsitsoni

2014

Global NEST Journal

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The aim of this research is to study the behavior of different forest species in accordance with their ability to retain heavy metals on their leaves in order to select the most suitable species for urban and peri-urban use, which will contribute to the reduction of the continuously growing atmospheric pollution in the cities. Five species were studied: Cupressus arizonica, Albizia julibrissin, Platanus orientalis, Celtis australis and Ligustrum japonicum. 360 leaf samples were collected and two treatments (non-washed and washed sheets) were applied on them. The determinative estimation of the concentration of metals in the clear filtrate was carried out with the use of ICP-OES inductively coupled plasma optical emission spectrometry. In order to correlate the concentration of heavy metals in leaves with the silvicultural characteristics of species, the following characteristics were measured in 20 individuals per species: diameter at breast height, total height of tree, crown beginning height and crown's diameters. Statistically significant differences between the studied species were found for all metals. In addition, not a single species was found to retain the highest concentration of all. Metal concentration on leaves' surface in declining order was: (Mn) > (Cu) > (Zn) > (Pb) > (Cr) > (Ni) > (Cd). The factor of height is significant both in the upper and lower layer of the crown. Broadleaves' species as Albizia julibrissin with compound leaves capture significant heavy metals as conifer species.

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“…Unlike many other pollutants associated with the environments, metals are non-biodegradable and can undergo biomagnifications in living tissues (Clark, 1992). Uptake and accumulation of heavy metals by plants is either via the roots and foliar surfaces (Sawidis et al, 2001). Some factors which affect metal uptake include soil pH, metal solubility, conductivity, stages of plant growth, plant species, soil type and fertilizers (Sharma et al, 2006;Ismail et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

Uptake of Heavy Metals by Dioscorea rotundata (White Yam) and Ipomoea batatas (Sweet Potato) from Enyigba Lead-Zinc Derelict

Wilberforce¹,

Nwabue²

2013

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The levels of heavy metals in Dioscorea rotundata (white yam) and Ipomoea batatas (sweet potato), in addition to the soil, were examined using X-ray Fluorescence (XRF) technique. The results revealed that heavy metal in soil decreased in the order Pb > Zn > Cu > Mn > Cd > Ni > As > Cr. The mean concentration (mg kg -1 ) of metals was found in the range of Pb (0.04-0.14); As (0.02-0.04): Cd (0.02-0.04); Cu (40.12-62.12); Cr (0.01-0.21); Zn (24.18-74.60); ). As and Cd were not detected in leaves of Dioscorea rotundata. Generally accumulation of metals was observed to be higher in the root than in the leaves and the Translocation Factor (TF) was highest (2.0) in Ipomoea batatas and lowest (0.22) in Dioscorea rolundala. High Pollution Indices (PI > 1) of As and Pb was observed in the two investigated tubers. The variation in the parameters determined were found to be statistically significant (p < 0.05) as determined by one way analysis of variance.

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A Study of Metal Distribution from Lignite Fuels Using Trees as Biological Monitors

Cited by 94 publications

References 22 publications

Avaliação de contaminação por metais pesados em amostras de siris azuis

Avaliação de contaminação por metais pesados em amostras de siris azuis

Selection of forest species for use in urban environment in relation to their potential capture to heavy metals

Uptake of Heavy Metals by Dioscorea rotundata (White Yam) and Ipomoea batatas (Sweet Potato) from Enyigba Lead-Zinc Derelict

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