Sediment quality assessment in a tropical estuary: The case of Ceará River, Northeastern Brazil

Nilin, Jeamylle; Moreira, Lucas Buruaem; Aguiar, José Edvar; Marins, Rozane Valente; Abessa, Denis Moledo de Souza; Lotufo, Tito Monteiro da Cruz; Costa-Lotufo, Letı́cia V.

doi:10.1016/j.marenvres.2013.02.009

Cited by 58 publications

(32 citation statements)

References 36 publications

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“…and the Bn is the background or pristine value of the element. Factor 1.5 is introduced to minimize the effect of possible variations in the background values, which may be attributed to lithologic variation in the sediments [1,14] Hence. for quality classification.…”

Section: Enrichment Factor (Ef)mentioning

confidence: 99%

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Preliminary Study of Heavy Metal (Zn, Pb, Cr, As, Cu, Cd) Contaminations on Different Soil Level from Post-Mining Bauxite Production for Aquaculture

et al. 2018

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Bauxite production and exploration give negative impact environmental modification and increasing concern pollution of heavy metals. One of an alternative to reduce the negative impact of bauxite post-mining production is by re-utilizing the abandoned bauxite land and necessary exploratory study to obtain the current environmental conditions primarily related to heavy metals in bauxite mining area. Soil and water quality samples from 5 (five) sites based on post-mining activities were used to determine concentration heavy metals of As, Cd, Pb, Zn, Cr, Cu from different soil level. They were also collected for grain size analysis including those of sand and mud percentages along with the mean, and sorting analysis. The mean grain size post-mining bauxite ranged between very fine sand to medium sand and had heterogeneous texture. The coarse grain size percentage increased towards the bottom of the soil. Total heavy metal contents for post-mining bauxite soils are 0,081 ppm, 0,245 to 0,471 ppm and 0,007 ppm for As, Pb and Cd respectively. Heavy metals for Cd, uniformly at every depth from soil level. On the other hand, Pb showed significance pattern, it was indicated every depth from soil level, the concentration of Pb was different.

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Section: Enrichment Factor (Ef)mentioning

confidence: 99%

“…Many pollutants are accumulated in the sediments and have harmful effects on the aquatic environments [1]. The sediments of the aquatic environment act as a major reservoir of heavy metals and source of contaminants [2].…”

Section: Introductionmentioning

confidence: 99%

Preliminary Study of Heavy Metal (Zn, Pb, Cr, As, Cu, Cd) Contaminations on Different Soil Level from Post-Mining Bauxite Production for Aquaculture

et al. 2018

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“…Fe was selected because it has absorbing properties in tropical soils and is a conservative element of the metal phases in fluvial and coastal sediments (SCHIFF; WEISBERG, 1999). In the present study, concentrations values obtained for Nilin et al (2013) at reference sites of Pacoti estuary were considered as background. The anthropogenic impact of surface sediment was quantified by calculating the enrichment factor EF according to equation (1): …”

Section: Geochemical Analysismentioning

confidence: 99%

“…Thus, besides acting as a sink, the sediment may constitute a source of contaminants and nutrients to the adjacent waters (ADAMS et al, 1992 (RODRIGUES et al, 2013). In turn, the few -but no less important -studies in this segment on the northeastern region of the country (BURUAEM et al, 2013b;NILIN et al, 2013), are being still conducted in inverse proportion and speed to the society and scientific community demand.…”

Section: Introductionmentioning

confidence: 99%

“…The region is dry climate and sub humid, with irregular rainfall in the first half of the year, mostly between the months of February and May (rainy season), and the dry period in the second half (MORAIS et al, 2006). The low Pacoti is one of the major watercourses that cross the RMF and, although located in a conservation area, its estuary is under the real estate speculation for installation of large tourist facilities, and under influence of untreated domestic and industrial effluents, due to the accelerated growth of urban region (BARRA et al, 2014;NILIN et al, 2013;SANTANA, 2014).…”

Section: Introductionmentioning

confidence: 99%

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Geochemical and Ecotoxicological Evaluation of an Estuarine Sediment Section at Pacoti River/Ce, Brazil

Souza

Silva

2016

HOLOS

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Pacoti estuary is located on the East coast of Ceará State/Brazil and is influenced by several sources of pollution. The sediment quality in three sampling stations was evaluated through an integrated approach. The sediments obtained were analyzed geochemically with respect to texture, organic matter, phosphorus, nitrogen and concentration of metals (Fe, Pb, Cu and Zn). Additionally, the metal loading in the sediment was determined considering a toxic risk quotient (RQ) and enrichment factor (EF). The ecotoxicological approach consisted of acute and chronic toxicity tests with species of marine invertebrates. The geochemical and ecotoxicological data were integrated using qualitative and technical criteria for multivariate analysis. The analyses showed a moderate change in the quality of the sediment Pacoti and there are influences of different contaminant sources. For this reason, one cannot disregard the input of other contaminants, not measured in this study, which probably may also have been relevant for sediment toxicity. Nonetheless, the data suggest that Pb and Cu metals as well as N tended to quality degradation in depositional areas and the sediment had some influence on the biological effects observed. KEYWORDS:

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Determining the Influence of Urbanization on Mangrove Zones of Northeastern Brazil: Characterization of Ceará State Coastal Zone Organic Matter Inputs

Mounier

Marins

Lacerda

2018

Coastal Research Library

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Sediment quality assessment in a tropical estuary: The case of Ceará River, Northeastern Brazil

Cited by 58 publications

References 36 publications

Preliminary Study of Heavy Metal (Zn, Pb, Cr, As, Cu, Cd) Contaminations on Different Soil Level from Post-Mining Bauxite Production for Aquaculture

Preliminary Study of Heavy Metal (Zn, Pb, Cr, As, Cu, Cd) Contaminations on Different Soil Level from Post-Mining Bauxite Production for Aquaculture

Geochemical and Ecotoxicological Evaluation of an Estuarine Sediment Section at Pacoti River/Ce, Brazil

Determining the Influence of Urbanization on Mangrove Zones of Northeastern Brazil: Characterization of Ceará State Coastal Zone Organic Matter Inputs

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