Trace metals and lanthanides in a tropical river environment

Paul, A.C.; Parameswaran, M.; Pillai, K. Chandrasekara

doi:10.1007/bf01257152

Cited by 11 publications

(6 citation statements)

References 6 publications

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“…É sabido que existe uma relação diretamente proporcional entre as concentrações de metais pesados e o teor da fração fina dos sedimentos, assim como com a concentração de matéria orgânica nos sedimentos (Paul et al 1994, Cortecci 2005. Isso caracteriza propriedades geoquímicas importantes no processo da mobilização desses poluentes inorgânicos nos sedimentos.…”

Section: Resultsunclassified

Caracterização granulométrica e mineralógica dos sedimentos como suporte para análise de contaminação ambiental em nascentes do rio Subaé, Feira de Santana (BA)

Cruz¹,

Santos²,

Lima³

et al. 2013

Geochim. Bras.

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Section: Resultsunclassified

Caracterização granulométrica e mineralógica dos sedimentos como suporte para análise de contaminação ambiental em nascentes do rio Subaé, Feira de Santana (BA)

Cruz¹,

Santos²,

Lima³

et al. 2013

Geochim. Bras.

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“…Another source is washout from agricultural land because some fertilisers contain Cd levels of even up to 40 mg/kg (Kumar et al, 2022). One of the major sources of diffuse Cd pollution is the production of inorganic fertilisers from phosphate ores (Paul et al, 1994;Rashmi et al, 2020). The major environmental Cd sources are Zn and Pb ores as it occurs naturally in their sulphide ores.…”

Section: Cadmiummentioning

confidence: 99%

Seasonal changes and determination of heavy metal concentrations in Veshaw river of the Indian western Himalaya

Rather

Ara²,

Sharma³

et al. 2022

Front. Environ. Chem.

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Trace elements are a major pollutant in the river water and these pollutants are present in all components of the ecological system. Since time immemorial, the River Veshaw has been one of the important sources of water and has shaped the cultural and social values in the Kashmir Valley. This study was conducted in rural parts of South Kashmir in the Western Himalaya from February to January 2020–2022. The river Veshaw provides various ecosystem services to the local communities as well as in the upper and lower stream regions in the form of many direct and indirect ecosystem services. The river is polluted by human waste from both rural and urban communities, as well as by agricultural runoff and effluent discharges from a variety of industrial activities due to its proximity. Effluent that makes it to the river contains a variety of pollutants, some of which are trace elements that accumulate in the local ecosystem, killing off plants and animals and reducing biodiversity. Trace element levels in water and sediment were found to follow the trend as: Sangam > Khudwani > Kulgam > Nihama > Aharbal > Kingwattan. The dominance pattern of heavy metals in water was Pb > As > Cd. The overall trend showed a downward trend of heavy metals, indicating the effect of land area drainage and anthropogenic activities on the stream water. The dominance pattern of heavy metals in water was Pb > As > Cd. Heavy metals were not detected in the middle and upstream sites. The average levels of heavy metals were highest at Downstream (Sangam), with values of Cd, Pd ad As 0.0054, 0.038 and 0.038 mgL-1. This shows that land drainage and human activities have an effect on the water in the stream.

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“…Additionally, residual fuel oils from the daily navigation of vessels in the Graciosa River estuary may also be contributing to the occurrence of metals (as suggested by Paul et al, 1994;Förstner and Wittman, 1993), as these oils have in their composition hydrocarbons and trace metals such as Ni and Cu. The concentrations of Fe are relatively low following the same trend observed by Lima (2001), that observed the pre-weathered source material and the pedoclimatic conditions of the Amazon region were driving factors for the low levels of Fe.…”

Section: Heavy Metalsmentioning

confidence: 99%

“…The total concentration of metals in the soil, which are usually present as trace elements, can be attributed to the soil parent material as well as the impact of human activities (Paul et al, 1994). The main anthropogenic sources of heavy metals, in addition to the natural ones, have been related to urban effluents (mainly for Cr, Cu, Pb, Zn, Mn and Ni), burning of fossil fuels (Cu, Ni, Pb), beneficiation industries of iron and steel (Cr and Zn), fertilizers (Cu, Fe, Mn, Ni and Zn) and tailings deposits (Zn, Mn and Pb) (Förstner;Wittman, 1993).…”

Section: Introductionmentioning

confidence: 99%

Characterization of a Mangrove Soil in the Graciosa River Estuary, in Bahia, Brazil: Highlighting Heavy Metals and Microbial Populations

Araújo¹,

Krause²,

Santana³

et al. 2013

Agrotropica

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Mangrove soils have unique properties, able to transform and sequester chemical compounds of biogeochemical and ecological importance, including heavy metals. The degeneration of mangrove soils shows the risk of releasing these metals to the environment. We search for improve the knowledge about how disturbance affects the metal fixation and microbial of mangrove soils. This study characterized a mangrove soil along the Graciosa River estuary (Bahia, Brazil), according to selected physical, chemical and microbiological properties. In 2002, soil was collected from an anthropic and from an adjacent natural site. Both sites were re-sampled in 2007, after a vegetal regeneration on the anthropic site. Significant differences between the natural and anthropic surface layers were observed for chemical and physical soil properties. In particular, heavy metals (Co, Cr, Cu, Zn, Ni, Mn and Fe) showed significant differences with depth and lower concentrations were found in the anthropic site, exception to Cd (moderately high). Between 2002 and 2007, the disturbed site showed a decrease for all observed metals, except for Ni. The data also suggest that microbial populations may be favored in the layers of the soil profile most influenced by high and low tides, C1 (0-20 cm) and C5 (99-125 cm).Key words: Gleysol, physical and chemical characteristics, trace elements, microorganisms.Caracterização de um solo de mangue no rio graciosa, na Bahia, Brasil: destacando metais pesados e populações microbianas. Os solos de mangue têm propriedades particulares, sendo capazes de transformar e remobilizar compostos químicos de importância biogeoquímicos e ecológicos, incluindo metais pesados. A degeneração de solos de mangue tem o risco de liberar estes metais para o ambiente. Procura-se melhorar o conhecimento sobre como as perturbações afetam a fixação de metais e a microbiota de solos de manguezal. Este estudo caracterizou um solo de manguezal no estuário do rio Graciosa (Bahia, Brasil), de acordo com algumas propriedades físicas, químicas e microbiológicas. Em 2002, o solo foi coletado a partir de um área antropizada e de outra natural adjacente. Ambas as áreas foram reamostradas em 2007, após regeneração vegetal naquela antropizada. Diferenças significativas entre as camadas superficiais antropizada e natural foram observadas para as propriedades químicas e físicas do solo. Em particular, os metais pesados (Co, Cr, Cu, Zn, Ni, Mn e Fe) mostraram diferenças significativas com a profundidade e concentrações mais baixas foram encontradas na área antropizada, com exceção do Cd (moderadamente alto). Entre 2002 e 2007, a área antropizada mostrou diminuição para todos os metais observadas, exceto para Ni. Os dados também sugerem que as populações microbianas podem ser favorecidos nas camadas do perfil do solo mais incluenciadas pelas marés altas e baixas, C1 (0-20 cm) e C5 (99-125 cm).Palavras-chave: Gleissolo, características físicas e químicas, elementos traços, microorganismos.

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Trace metals and lanthanides in a tropical river environment

Cited by 11 publications

References 6 publications

Caracterização granulométrica e mineralógica dos sedimentos como suporte para análise de contaminação ambiental em nascentes do rio Subaé, Feira de Santana (BA)

Caracterização granulométrica e mineralógica dos sedimentos como suporte para análise de contaminação ambiental em nascentes do rio Subaé, Feira de Santana (BA)

Seasonal changes and determination of heavy metal concentrations in Veshaw river of the Indian western Himalaya

Characterization of a Mangrove Soil in the Graciosa River Estuary, in Bahia, Brazil: Highlighting Heavy Metals and Microbial Populations

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