Distribuição de hidrocarbonetos policíclicos aromáticos e alifáticos em sedimentos estuarinos / Distribution of aliphatic and polycyclic aromatics hydrocarbons in estuary sediments

Mizukawa, Alinne; Santos, Mauricius Marques dos; Ide, Alessandra Honjo; Azevedo, Júlio César Rodrigues de

doi:10.21168/rbrh.v20n4.p1019-1028

Cited by 2 publications

(3 citation statements)

References 37 publications

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“…In this matrix, the concentration of total alkanes varied from 188.8 µg Kg -1 (PA point, sampling C2) to 8825.09 µg Kg -1 (PC point, sampling C4). These data are below values found in sediments from several polluted regions of the world such as India, where the concentration of 107800 µg Kg -1 has been quantified in sediments (Behera et al, 2023) (Mizukawa et al, 2015).…”

Section: Sedimentsmentioning

confidence: 59%

“…During these events, the flow of maritime vehicles tends to increase, with traffic heading to beaches, islands and other tourist regions, primarily polluting surface water. Furthermore, continental activities involving transport and vehicle flow, industrial and domestic anthropogenic activities from this period may also have contributed to the alkane concentration indices in the resulting months, via surface runoff (Mizukawa et al, 2015). Finally, the influence of the resuspension of sediments into the water cannot be ruled out, due to dredging processes in regions that disperse pollutants with the tidal flow that previously adhered only to the solid matrix (Frena et al, 2017;Pinheiro et al ., 2017;Ceccopieri et al, 2023).…”

Section: Superficial Watermentioning

confidence: 99%

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Pollution profile by n-alkanes in sediment and surface water of the Paranaguá Estuarine Complex

Lima,

Modkovski,

Kramer

et al. 2024

Cad. Pedagógico

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The increase in urban demand derived from human activities has contributed to pollution levels in water environments, compromising the quality of water, sediments, and aquatic biota. Estuarine environments receive multiple influences from anthropogenic activities that contribute to the deposition of organic pollutants in the environment, including n-alkanes. In this context, n-alkanes are hydrocarbons that can be found in the environment through natural ecosystem activities as well as through pollution by human practices. Due to their degradation resistance characteristics, they are considered good markers of environmental pollution. The presence of hydrocarbons in the environment can become a major stressor in the environment, being associated with cases of cancer, mutations, and changes in the endocrine system of animals and humans. This study aimed to evaluate the pollution profile of surface water and sediments caused by the presence of n-alkanes. For this, it was evaluated the presence of n-alkanes in surface water and sediment at ten points in the Paranaguá Estuarine Complex (Paraná – Brazil), comprising areas influenced by the sea and part of an urbanized river, during four distinct events. The concentrations in water reached a maximum value of 61.7 µg L-1, while in the sediment, the value was 8825.09 µg Kg-1. The diagnostic reasons suggest mixed sources of contribution, but reaffirm the portion of anthropic contribution to estuarine pollution and reinforce the pressures of human activities in processes of degradation of water bodies. It is expected that the data found will serve as a basis for future work and support decision-making in the context of water resources management in the region.

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Section: Sedimentsmentioning

confidence: 59%

Section: Superficial Watermentioning

confidence: 99%

Pollution profile by n-alkanes in sediment and surface water of the Paranaguá Estuarine Complex

Lima,

Modkovski,

Kramer

et al. 2024

Cad. Pedagógico

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“…Recent studies show that PAHs are a substantial interest in aquatic environments that are influenced by urban areas (BOURGEAULT; GOURLAY-FRANCÉ, 2013) and also in estuarine environments (SANT'ANNA JUNIOR et al, 2010;MIZUKAWA et al, 2015). Due to their extensive environmental distribution and their exposure risk, it became fundamental to identify the main sources of these compounds (BOULOUBASSI et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

PAHs diagnostic ratios for the distinction of petrogenic and pirogenic sources: applicability in the Upper Iguassu Watershed - Parana, Brazil

Santos

Brehm

Filippe

et al. 2017

RBRH

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Polycyclic aromatic hydrocarbons (PAHs) are considered persistent organic pollutants and can cause serious damage in some organisms, including mutagenic and carcinogenic properties. The aim of this study was to evaluate the PAH concentrations in an urban basin and use diagnostic ratios to possible distinguish sources of contamination. The surface water analysis showed predominance of compounds containing 3 to 4 aromatic rings while in suspended particulate matter and sediment there was a predominance of compounds containing 4, 5 and 6 rings. Although present in low concentrations in the sediment, assessment of toxicity equivalent factor (TEF) showed values higher than 3 ng g -1 pellet to 50% of the samples with values of up to 125.35 ng g -1. The use of diagnostic ratios allowed verifying that the main source of PAHs in these aquatic environments, are pyrogenic sources. Still, the use of such relations should be done with caution, trying to assess possible interference of degradation factors Keywords: Diagnostic ratios; Risk assessment; Polycyclic aromatic hydrocarbons; Environmental contamination. RESUMOHidrocarbonetos policíclicos aromáticos (HPAs) são poluentes orgânicos considerados persistentes e que podem causar sérios danos em alguns organismos, incluindo propriedades mutagênicas e carcinogênicas. O objetivo desse estudo foi avaliar as concentrações de HPAs em uma bacia urbanizada e utilizar relações diagnósticas para tentar distinguir fontes de contaminação. A análise de água superficial mostrou um predomínio de compostos de 3 a 4 anéis aromáticos, enquanto que para material particulado suspenso e sedimentos houve uma predominância de compostos com 4, 5 e 6 anéis aromáticos. Apesar de baixas concentrações no sedimento, avaliação de equivalentes de toxicidade mostraram valores superiores a 3 ng g -1 de sedimento para 50% das amostras, com valores de até 125.35 ng g PAHs diagnostic ratios for the distinction of petrogenic and pirogenic sources: applicability in the Upper Iguassu Watershed -Parana, Brazil

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Distribuição de hidrocarbonetos policíclicos aromáticos e alifáticos em sedimentos estuarinos / Distribution of aliphatic and polycyclic aromatics hydrocarbons in estuary sediments

Cited by 2 publications

References 37 publications

Pollution profile by n-alkanes in sediment and surface water of the Paranaguá Estuarine Complex

Pollution profile by n-alkanes in sediment and surface water of the Paranaguá Estuarine Complex

PAHs diagnostic ratios for the distinction of petrogenic and pirogenic sources: applicability in the Upper Iguassu Watershed - Parana, Brazil

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