Health Risk Assessment Due to Heavy Metals Exposure via Consumption of Bivalves Harvested from Marudu Bay, Malaysia

Denil, Delta Jenetty; Ching, Fui Fui; Ransangan, Julian

doi:10.4236/ojms.2017.74035

Cited by 12 publications

(5 citation statements)

References 39 publications

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“…The HI value (0.56) of the present study was <1 depicting low risk of exposure for consumers of periwinkles. The HI value of the present study is less than that [37] for four different clams but agrees with that (0.45) in fish reported in the Niger Delta region [38]. The percentage make-up of the HI was in the order Pb > Cr > Cd> > Zn > Ni > Cu indicating the elevated input of Pb, Cr and Cd concentrations in the periwinkles examined.…”

Section: Target Hazard Quotientsupporting

confidence: 82%

Consumption Safety in Relation to Bioaccumulation of Heavy Metals in Periwinkles (Tympanotonus fuscatus) Obtained from Ogbia in the Niger Delta Region of Nigeria

Moslen¹,

Adiela²

2021

Heavy Metals - Their Environmental Impacts and Mitigation

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The study assessed human health risk and accumulation of heavy metals (Cd, Cu, Pb, Ni, Cr and Zn) in periwinkles (Tympanotonus fuscatus) obtained from the Niger Delta region of Nigeria. Samples were collected for six months on a monthly basis. The samples were digested according to the method described by Association of official analytical chemists and analyzed using atomic absorption spectrophotometer (AAS). Temporal variations in metal concentrations were observed with values (mgkg−1) ranging as follows Pb (2.34–6.7), Ni (0.55–2.28), Zn (0.55–11.66), Cr (0.74–3.65), Cu (1.15–3.91) and Cd (0.22–1.06). Variation in metal concentration was significantly different (p < 0.05) with metals such as Pb, Ni and Cd found to be above their respective FAO/WHO permissible limits. The estimated daily intake (EDI) of all metals examined was less than their respective reference oral doses (RFD). The target hazard quotient (THQ) non-carcinogenic and the hazard index (HI) of metals were < 1 while the hazard quotient carcinogenic (HQ) ranged between 10−6 – 10−4. The study therefore concluded gradual accumulation of metals and minimal health risk due to consumption of contaminated periwinkles in the study area.

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Section: Target Hazard Quotientsupporting

confidence: 82%

Consumption Safety in Relation to Bioaccumulation of Heavy Metals in Periwinkles (Tympanotonus fuscatus) Obtained from Ogbia in the Niger Delta Region of Nigeria

Moslen¹,

Adiela²

2021

Heavy Metals - Their Environmental Impacts and Mitigation

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“…Se ha reportado que el mercurio puede ocasionar alteración en células sanguíneas de moluscos bivalvos pudiendo a ciertas concentraciones tener efecto letal en organismos acuáticos (Jakimska et al, 2011;Denil et al, 2017). Otros investigadores deducen la presencia de mecanismos de defensa frente a los metales a través de vesículas que facilitan la excreción celular (Dallinger, 1993;Claisse et al, 2001), o mediante una protección a través de sus valvas como biopelículas de protección (Scardino et al, 2013).…”

Section: Discussionunclassified

“…It has been reported that mercury can cause a cellular alteration in blood cells of bivalve molluscs, and an absolute concentration can have a lethal effect in aquatic organisms (Jakimska et al, 2011;Denil et al, 2017). Other researchers deduce the presence of protection mechanisms against metals through vesicles that facilitate cell excretion (Dallinger, 1993;Claisse et al, 2001), or defense throughout their shells as protective biofilms (Scardino et al, 2013).…”

Section: Discussionmentioning

confidence: 99%

Estimación del riesgo ecológico y a la salud humana del mercurio en una zona de manglar del estuario La Puntilla, provincia de El Oro, sur del Ecuador

Velásquez-López

López-Sánchez

Rivera-Velásquez

2020

Bol. Investig. Mar. Costeras

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El presente estudio se centra en la evaluación de los niveles de concentración de mercurio total y la estimación del riesgo ecológico (Er), el índice de riesgo ecológico (RI) y el coeficiente de riesgo tóxico o peligro (HQ) para la salud humana en un área de manglar junto a las desembocaduras de los ríos Chaguana y Siete, en el estuario de La Puntilla en el sur de Ecuador. Para la determinación de Er, RI y HQ, identificamos tres indicadores de contaminación por mercurio: sedimentos, raíz de mangle y tejido blando del bivalvo Anadara tuberculosa. En el área de manglar que bordea la desembocadura del río Chaguana, las concentraciones de mercurio fluctuaron entre 0,11±0,06 mg/kg en sedimentos, 0,06±0,01mg/kg en raíz de mangle, con una consistente presencia de A. tuberculosa, pero solo una muestra del bivalvo registró un nivel de 0,034 mg/kg de mercurio. En contraste, en el área de manglar adyacente a la desembocadura del río Siete, las concentraciones de mercurio oscilaron entre 0,77±0,42 mg/kg en sedimentos y 0,15±0,12 mg/kg en la raíz de manglar, siendo imperceptible la presencia de A. tuberculosa. Los resultados del análisis de riesgo indicaron que en la desembocadura del río Chaguana, el Er y el índice de RI se colocaron en la categoría “baja”. En contraste, en la desembocadura del río Siete, el Er resultó “alto” y RI resultó “moderado”. El riesgo potencial para la salud humana fue bajo, en consistencia con el valor de HQ < 1 que considera el consumo de A. tuberculosa y el contacto dérmico a través de sedimentos; sin embargo, la escasa presencia del bivalvo en la desembocadura del río Siete es de preocupación.

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“…where MPI is the metal pollution index, and MCi is the concentration of metal i in the soft tissues of oysters (Denil et al 2017). The criterion for evaluating heavy metal pollution status according to MPI was summarized in Table 1 ( Jamil et al 2014).…”

Section: Metal Pollution Assessmentmentioning

confidence: 99%

Oyster As, Cd, Cu, Hg, Pb and Zn Levels in the Northern South China Sea: Long-term Spatiotemporal Distributions, Interacting Effects, and Risk Assessment to Human Health

Wang¹,

Wang²,

Chen³

et al. 2021

Preprint

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Estuarine and coastal ecosystems are often considered vulnerable due to the complex biogeochemical processes and the human disturbances through a variety of pollution. Among environmental contaminants, heavy metals in estuarine and coastal ecosystems have been of increasing concern in environmental conservation. Long-term exposure to heavy metal contamination, mainly through food and water, could be harmful to human health. It is therefore critical to understand the quantitative comparisons and interacting effects of different heavy metals in common seafood species, such as oysters. This work studied the long-term spatiotemporal trends and health risk assessment of oyster arsenic (As), cadmium (Cd), copper (Cu), mercury (Hg), lead (Pb) and zinc (Zn) levels in the coastal waters of northern South China Sea. Cultured oysters (Crassostrea rivularis) from 23 estuaries and harbors in the coastal areas of northern South China Sea in 1989–2015 were analyzed for the spatiotemporal trends of the six heavy metal levels. Metal pollution index (MPI), target hazard quotient (THQ) and hazard index (HI) were used for quantifying the exposure of the six heavy metals to human health through oyster consumption. Principal component analysis (PCA) was used for assessing the relative importance of the six metals in oyster heavy metal distribution patterns in the northern South China Sea. Overall, the As, Cd, Cu, Hg, Pb and Zn levels in oysters from the northern South China Sea generally declined from 1989 to 2015, stayed relatively high (MPI = 2.42–3.68) during 1989–2000, gradually decreased since 2000, and slightly increased after 2010. Oyster heavy metal levels were highest in the Pearl River Estuary (MPI = 1.20–5.52), followed by west Guangdong and east Guangdong, Guangxi, and Hainan coastal waters. This pattern is probably because economics and industry around the Pearl River Estuary have been growing faster than the other areas of this work in the recent two decades, and it should be taken as a hotspot for the monitoring of seafood safety in southern China. Principal component analysis indicated that Cu, Zn and Cd were the most important metals in the long-term distributions of oyster heavy metal levels in the northern South China Sea. Health risk assessment suggested that the risk of the six heavy metals exposure through oyster consumption were relatively high during 1989–2005 (THQ = 1.01–5.82), significantly decreased since 2005 (THQ < 1), and slightly increased after 2010.

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Health Risk Assessment Due to Heavy Metals Exposure via Consumption of Bivalves Harvested from Marudu Bay, Malaysia

Cited by 12 publications

References 39 publications

Consumption Safety in Relation to Bioaccumulation of Heavy Metals in Periwinkles (Tympanotonus fuscatus) Obtained from Ogbia in the Niger Delta Region of Nigeria

Consumption Safety in Relation to Bioaccumulation of Heavy Metals in Periwinkles (Tympanotonus fuscatus) Obtained from Ogbia in the Niger Delta Region of Nigeria

Estimación del riesgo ecológico y a la salud humana del mercurio en una zona de manglar del estuario La Puntilla, provincia de El Oro, sur del Ecuador

Oyster As, Cd, Cu, Hg, Pb and Zn Levels in the Northern South China Sea: Long-term Spatiotemporal Distributions, Interacting Effects, and Risk Assessment to Human Health

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