Biomonitoring of Heavy Metals (Fe, Zn, Cu, Mn, Cd and Cr) in Oysters: Crassostrea rhizophorae of Mangrove Areas of Alagoas (Brazil)

Azevedo, Joaquim Alexandre Moreira; Barros, Alexandre Bomfim; Miranda, Paulo Rogério Barbosa de; Costa, João Gomes da; Nascimento, Velber Xavier

doi:10.1590/1678-4324-2019180211

Cited by 9 publications

(7 citation statements)

References 24 publications

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“…Zn is also a natural component of oysters and high concentrations have also been reported with copper (4,8,11). Zinc is necessary for good health, but elevated concentrations can be harmful because excessive intake will lead to the suppression of the intake of copper and iron (18).…”

Section: Discussionmentioning

confidence: 99%

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Evaluation of Heavy Metal Pollution in Commonly Consumed Mollusc (Crassostrea gasar) from Elechi Creek, River State, Nigeria and the Health Risk Implications

Davies,

Anyanwu,

Amaewhule

2024

Journal of the Turkish Chemical Society Section A: Chemistry

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Marine biotas are used to assess potential adverse human health risks associated with consuming protein-rich aquatic organisms. Heavy metal content of Mangrove oysters (Crassostrea gasar) was evaluated between January and June 2022 in 3 stations. Six heavy metals (copper, cadmium, zinc, lead, arsenic and iron) were determined using standard methods. Target Hazard Quotient (THQ) and Hazard Index (HI) were used for the non-carcinogenic assessment while Target Cancer Risk (TR) was used for the carcinogenic assessment of the potential human health risk of consuming the oysters. The heavy metal values recorded were Cu (473.2 – 596.7 mg/kg), Cd (2.33 – 3.84 mg/kg), 209.02 – 246.41 mg/kg), Pb (6.16 – 12.07 mg/kg), As (0.012 – 0.016 mg/kg) and Fe (1609.0 – 1846.0 mg/kg). All the heavy metals were above the acceptable limits except arsenic. Stations 2 and 3 had relatively higher values; attributed to anthropogenic activities. The THQ and HI values were less than 1 in all the metals and stations while TR for Pb and arsenic were within the negligible range in all the stations. However, Cd was unacceptable among the children in station 2. Station 3 had relatively higher values while the children were more vulnerable to both non-carcinogenic and carcinogenic risks. In conclusion, the consumption of oysters from Elechi Creek is considered safe based on acceptable levels of the THQ, HI and TR; though Cd-TR for children (Station 2) was unacceptable.

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Section: Discussionmentioning

confidence: 99%

“…Oysters are increasingly being studied as indicators of heavy metal pollution because of their wide distribution in coastal environments, susceptibility to pollution, abundance and ease of collection as well as sessile habit and low enzymatic activity level (4,8,9,11,18,19).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Heavy Metal Pollution in Commonly Consumed Mollusc (Crassostrea gasar) from Elechi Creek, River State, Nigeria and the Health Risk Implications

Davies,

Anyanwu,

Amaewhule

2024

Journal of the Turkish Chemical Society Section A: Chemistry

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“…Many researchers have investigated the accumulation of heavy metals in leaves of some plants to determine the quality and efficiency of heavy metal retention in leaves (Tian et al, 2012), and others have determined the quantity of the accumulation achieved and compared the type of plant surface that gives the best accumulation (Ottele et al, 2010;Shittu et al, 2017). Also, a number of studies have tried employing vegetation to biomonitor the heavy metal in the environment both passively and actively (Burkitt et al, 1972;Monaci et al, 2000;Salati and Moore, 2010;Emmanuel et al, 2014;Cocozza et al, 2016;Azevedo et al, 2019;Kumar et al, 2019).…”

Section: Biomonitoringmentioning

confidence: 99%

“…Researchers have attempted numerous approaches to estimate the heavy metal fluxes in the environment (Azevedo et al, 2019;Kumar et al, 2019;Saher and Siddiqui, 2019). Recent environmental and public health regulations are primarily based on the theoretical analysis of the risk associated with human exposure to air pollutants, water discharges, soil pollutants and consumer products.…”

Section: Introductionmentioning

confidence: 99%

Spatial biomonitoring of airborne heavy metals emitted from a steel recycling plant

Adeleke

Fakinle²,

Odunlami

et al. 2020

MEQ

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PurposeThe study investigated the heavy metal flux around the vicinity of a steel recycling factory using passive biomonitoring technique with several pollution indices to assess the quality of the ambient environment.Design/methodology/approachThe vegetation around the facility was identified, and the most abundant species were selected for analysis. The collected samples were dried, milled, sieved and analyzed for elemental composition using energy dispersive X-ray fluorescence (ED-XRF). Pollution indices were used to quantitatively assess the data.FindingsResults show that maximum contamination occurs at the vicinity of factory. Generally, the deterioration of the ambient air around the vicinity of the steel recycling plant decreases with increasing distance from the steel recycling plant. However, for the radius considered in this study – 1 km, the ambient air at 1 km of the steel recycling facility is quickly deteriorating, and there is an urgent need for measures to mitigate the air quality impact of the steel recycling facility.Originality/valueThe study shows that the metal recycling process emits high levels of heavy metals to the environment, and there is an urgent need for personal protective equipment for the human population working in and around the close proximity of the recycling plant.

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“…The absorption, distribution and action mechanisms of heavy metals in plants depend on several factors, including species or varieties of the same species, plant development stage, chemical species of the element, metal concentration, time of exposure, soil pH, and organic matter content (Pendias, 2010;Baghaie and Fereydoni, 2019).When the heavy metals are absorbed by the roots, they accumulate mainly in the cell wall (Azevedo et al, 2019), and the exoderm and endoderm become a barrier to the movement of these ions (Tylová et al, 2017;Ismael et al, 2019).…”

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confidence: 99%

A Physiological behavior and tolerance of Lactuca sativa to lead nitrate and silver nitrate heavy metals

Santos

Silva

et al. 2022

Braz. J. Biol.

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This study goal to evaluate the effects of different concentrations of lead (Pb) and silver (Ag) on germination, initial growth and anatomical alterations of Lactuca sativa L. Plants use various mechanisms to reduce the impacts caused by anthropic action, such as xenobiotic elements of soils and water contaminated by heavy metals. These metals were supplied as lead nitrate and silver nitrate and the following treatments were established: control for both metals, maximum dose of heavy metals, for arable soils, allowed by the National Council of the Environment (Ag = 25 mg. Kg-1, Pb = 180 mg. Kg-1), double (Ag = 50 mg. Kg-1, Pb = 360 mg. Kg-1) and triple (Ag = 75 mg. Kg-1, Pb = 540 mg. Kg -1) of this dosage. Vigor and germination tests of the seeds and possible anatomical changes in the leaves and roots of lettuce plants were performed. The species showed a high capacity to germinate under Pb and Ag stress, and the germination was never completely inhibited; however, the germination decreased with increasing Pb concentrations, but not under Ag stress. The use of increasing doses of metals reduced seed vigor and increased chlorophyll content. An increase in biomass was also observed in plants from treatments submitted to Pb. The phytotoxic effects of metals were more pronounced at 15 days after sowing. Anatomically, L. sativa was influenced by metal concentrations, and had a reduction of up to 79.9% in root epidermis thickness at the highest Pb concentration, although some structures did not suffer significant changes. The results suggest that L. sativa presents tolerance to high concentrations of heavy metals, showing possible mechanisms to overcome the stress caused by these metals. In this research lettuce possibly used the mechanism of exclusion of metals retaining Pb and Ag in the roots preserving the photosynthetic apparatus in the aerial part of the plants. In general, the chemical element Pb was more toxic than Ag, in these experimental conditions.

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Biomonitoring of Heavy Metals (Fe, Zn, Cu, Mn, Cd and Cr) in Oysters: Crassostrea rhizophorae of Mangrove Areas of Alagoas (Brazil)

Cited by 9 publications

References 24 publications

Evaluation of Heavy Metal Pollution in Commonly Consumed Mollusc (Crassostrea gasar) from Elechi Creek, River State, Nigeria and the Health Risk Implications

Evaluation of Heavy Metal Pollution in Commonly Consumed Mollusc (Crassostrea gasar) from Elechi Creek, River State, Nigeria and the Health Risk Implications

Spatial biomonitoring of airborne heavy metals emitted from a steel recycling plant

A Physiological behavior and tolerance of Lactuca sativa to lead nitrate and silver nitrate heavy metals

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