Sources and distribution of polycyclic aromatic hydrocarbons in a an urbanized tropical estuary and adjacent shelf, Northeast of Brazil

Maciel, Daniele Claudino; Souza, José Roberto Botêlho de; Taniguchi, Satie; Bı́cego, Márcia Caruso; Zanardi-Lamardo, Eliete

doi:10.1016/j.marpolbul.2015.09.051

Cited by 61 publications

(20 citation statements)

References 37 publications

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“…As pointed out by previous studies (Buruaem et al, 2013;Maciel et al, 2016Maciel et al, , 2015Torres et al, 2015), the overall chemical contamination gradient in surface sediments decreased from estuarine-to marine-influenced sites. A recent investigation on trace metals (As, Cr, Cu, Ni, Pb and Zn) in the study area also revealed similar decreasing trends (Kim et al, 2017).…”

Section: Chemical Contamination Of Surface Sedimentssupporting

confidence: 57%

Shell alterations in limpets as putative biomarkers for multi-impacted coastal areas

Begliomini

Maciel

Almeida

et al. 2017

Environmental Pollution

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During the last years, shell alterations in gastropods have been proposed as tools to be used in monitoring programs. However, no studies were so far performed investigating the relationships among shell parameters and classical biomarkers of damage. The relationship between shell alterations (biometrics, shape and elemental composition) and biomarkers (LPO and DNA strand break) was evaluated in the limpet L. subrugosa sampled along a contamination gradient in a multi-impacted coastal zone from southeastern Brazil. Statistically significant differences were detected among sites under different pollution levels. The occurrence of shell malformations was consistent with environmental levels of several hazardous substances reported for the studied area and related to lipid peroxidation and DNA damage. In addition, considering the low mobility, wide geographic distribution, ease of collection and abundance of limpets in coastal zones, this putative tool may be a cost-effective alternative to traditional biomarkers. Thus, shell alterations in limpets seem to be good proxies for assessing biological adverse effects in multi-impacted coastal zones.

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Section: Chemical Contamination Of Surface Sedimentssupporting

confidence: 57%

Shell alterations in limpets as putative biomarkers for multi-impacted coastal areas

Begliomini

Maciel

Almeida

et al. 2017

Environmental Pollution

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“…A comparison of the datasets revealed that the PAH concentrations in the Itajaí-Açu estuarine system are higher than those reported for the Persian Gulf, 50 Patos Lagoon, 51 Capibaribe estuarine system 52 , 54 Kaohsiung harbor, where the ship traffic is intense (472-16201 ng g -1 ), 55 Fortaleza, northeast Brazil, with anthropogenic impacts coming from local harbor, industries and a petroleum refinery (3.0-2234.7 ng g -1 ) 56 and Santos estuary, southeastern Brazil, an area with increased urbanization and industrialization (60-8680 ng g -1 ). 57 The processes controlling sediment PAH concentrations are complex.…”

Section: Polycyclic Aromatic Hydrocarbonsmentioning

confidence: 65%

Distribution and Sources of Aliphatic and Polycyclic Aromatic Hydrocarbons in Surface Sediments of Itajaí-Açu Estuarine System in Brazil

Frena¹,

Bataglion²,

Sandini³

et al. 2016

J. Braz. Chem. Soc.

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The Itajaí-Açu estuarine system, located in southern Brazil, has great economic importance due to the presence of two ports (Itajaí and Navegantes). This system is affected by industrial and dredging activities, which can cause the remobilization of pollutants accumulated over time in the sediment. In this context, hydrocarbons were assessed in twelve surface sediment samples. n-Alkane and polycyclic aromatic hydrocarbons (PAH) concentrations were determined by gas chromatography and their sources assessed. Total concentrations ranged between 0.50 ± 0.04 and 69.70 ± 3.90 µg g -1 dry weight (d.w.) for n-alkanes and from 63.9 ± 12.1 to 1459.0 ± 43.5 ng g -1 d.w. for PAH. Most of the sediment samples presented carbon preference index (CPI) values close to unity, indicating that the area is submitted to petroleum-related sources, mainly close to Itajaí harbor, where an intense unresolved complex mixture (UCM) was observed. The presence at all stations of aβ-hopane biomarkers also indicated petrogenic input. Based on selected PAH ratios, the sedimentary PAH composition reflects a mixture of both petrogenic and pyrolytic sources. A comparison of the PAH concentrations found in this study with those listed in the sediment quality guidelines (SQGs) indicated that adverse biological effects on the biota are rarely expected.Keywords: aliphatic hydrocarbon, polycyclic aromatic hydrocarbon, biomarker, hopane, contamination IntroductionContamination levels in coastal environments are increasing mainly due to the presence of anthropogenic activities, as waste industrial discharges, industrial activities, navigation traffic, etc.1 Therefore, sediment contamination in such areas may occur. In several countries, port activities are rapidly developing, requiring greater attention, especially in relation to the dredging of contaminated sediments and environmental management. 2,3The Itajaí-Açu estuarine system is located on the north-central coast of Santa Catarina state, in Brazil. This is an area of economic interest not only because of tourism, but also due to the presence of the Port of Itajaí, which is considered the third largest container handling port in Brazil, the major international trading point of the state, and the largest national fishing pole landing site. Associated with this latter activity, several fish processing industries are installed along the margins of this estuary, mainly in the city of Itajaí. These industries dispose their waste products, usually without any treatment, directly into the estuary. [4][5][6][7] In addition, the harbor area is constantly dredged, in order to maintain the navigation channel at an elevation of 11 meters. In May 2011, dredging began to deepen the main river channel, aiming to increase the depth from 11 to 14 meters, allowing the entrance of larger ships. Sediment dredging can cause remobilization of the pollutants accumulated in this compartment over time. 6 O r g a n i c c o m p o u n d s s u c h a s a l i p h a t i c hydrocarbons (AHs) and polycyclic aromatic hydrocarbons (P...

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“…estuaries are transition zones between the continental and marine aquatic environments, and are fundamental for maintaining ecological processes in adjacent ecosystems. Tropical estuaries are threatened by the development of shrimp aquaculture (Hatje et al 2016, Suárez-Abelenda et al 2014, deforestation of mangroves and adjacent forests for aquaculture, real estate construction (Ferreira andlacerda 2016, Nguyen et al 2013), and input of industrial and domestic effluents (Maciel et al 2015).…”

Section: Introductionmentioning

confidence: 99%

Ecotoxicology assay for the evaluation of environmental water quality in a tropical urban estuary

Nilin

Santos

Nascimento

2019

An. Acad. Bras. Ciênc.

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Most studies evaluating the impacts of river pollution in the semi-arid region of Brazil have been geared towards physiochemical analyses, and investigations of the adverse effects of water pollution on associated organisms are scarce. This study aimed to evaluate the water quality in the Poxim river estuary in Aracaju, Sergipe throughout the dry and rainy season by evaluating the survival of the microcrustacean Mysidopsis juniae and physicochemical analyses. The evaluation of physiochemical parameters revealed a decrease in dissolved oxygen content in the rainy season. However, there was a significant reduction in microcrustacean survival in samples during the dry season, when the river flow is reduced and effluents become concentrated. These results suggest that pollutants received and carried by the waters of the Poxim River contribute to the reduction of environmental quality in the estuary, and this impact may vary according to dry and rainy patterns, that are uncertain considering the impacts of climate change on tropical regions.

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Sources and distribution of polycyclic aromatic hydrocarbons in a an urbanized tropical estuary and adjacent shelf, Northeast of Brazil

Cited by 61 publications

References 37 publications

Shell alterations in limpets as putative biomarkers for multi-impacted coastal areas

Shell alterations in limpets as putative biomarkers for multi-impacted coastal areas

Distribution and Sources of Aliphatic and Polycyclic Aromatic Hydrocarbons in Surface Sediments of Itajaí-Açu Estuarine System in Brazil

Ecotoxicology assay for the evaluation of environmental water quality in a tropical urban estuary

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