Heavy metals in sediment cores from a tropical estuary affected by anthropogenic discharges: Coatzacoalcos estuary, Mexico

Rosales-Hoz, Leticia; Cundy, Andrew B.; Bahena-Manjarrez, J. L.

doi:10.1016/s0272-7714(03)00066-0

Cited by 56 publications

(18 citation statements)

References 9 publications

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“…The Coatzacoalcos estuary has an estimated length of 40 km. In the upper estuary, width and depth reach 213 and 18 m respectively; in the river mouth, width and depth reach 530 and 11 m respectively (Rosales-Hoz et al 2003a). In the course of the main water body, several rivers discharge their waters, contributing to the load of contaminants to the estuary: Coachapa river, Uxpanapa river, San Francisco stream, Calzada river, and Teapa stream.…”

Section: Methodsmentioning

confidence: 99%

“…Depending on the season and on the basis of meteorological conditions, the Coatzacoalcos estuary may reach up to 40 km upstream; nevertheless, the lower Coatzacoalcos river has been highly industrialized since the 1970s and currently accounts for 65 petrochemical plants that produce more than 15 million tons of petrochemical products (Rosales-Hoz et al 2003a). Mercury transportation in the environment is mainly influenced by atmospheric dynamics; therefore, in this paper the seasonal variability of mercury in surficial sediments, clams and a variety of fish of dietary importance from the industrialized part of the Coatzacoalcos estuary is examined, in order to elucidate if Hg concentrations are season dependent for the study area.…”

Section: Introductionmentioning

confidence: 99%

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Mercury in Biota and Surficial Sediments from Coatzacoalcos Estuary, Gulf of Mexico: Distribution and Seasonal Variation

Ruelas-Inzunza¹,

Páez‐Osuna

Zamora-Arellano

et al. 2008

Water Air Soil Pollut

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Variation of mercury (Hg) in sediments and biota from Coatzacoalcos estuary during the dry, rainy and windy seasons was estimated. In sediments, Hg concentrations ranged from 0.07 μg g −1 in site 13 (Ixhuatepec) located upstream, to 1.06 μg g −1 in site 3 (Coatzacoalcos river), located in the industrialized area. Highest enrichment factor (EF) and index of geoaccumulation (I geo ) in surficial sediments were 53 and 5.1 respectively. From EF and I geo , it is considered that Coatzacoalcos estuary is from moderately contaminated to contaminated. In most fish species from Coatzacoalcos estuary, the sequence of Hg concentration was liver>muscle>gills. Average Hg concentrations in soft tissue of bivalves ranged from 0.09 μg g −1 in Corbicula fluminea to 0.18 μg g −1 in Polymesoda caroliniana. Biota-sediment accumulation factor (BSAF) ranged from 0.9 in P. caroliniana during the rainy season (site 4) to 3.8 in P. caroliniana from the same site during the windy season.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Mercury in Biota and Surficial Sediments from Coatzacoalcos Estuary, Gulf of Mexico: Distribution and Seasonal Variation

Ruelas-Inzunza¹,

Páez‐Osuna

Zamora-Arellano

et al. 2008

Water Air Soil Pollut

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“…Sediments were dated using the 137 Cs methods described by Rosales-Hoza et al (2003). Accuracy of heavy metals analysis method Four parallel analyses of standard sediment reference material (GSD-9 from Institute of Geophysical and Geochemical Exploration, Chinese Academy of Geological Sciences) were conducted to verify the accuracy of the heavy metal digestion method.…”

Section: Sample Collectionmentioning

confidence: 99%

Distribution and chemical fractionation of heavy metals in recent sediments from Lake Taihu, China

et al. 2007

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Lake Taihu is one of the most contaminated lakes in China. Surface sediment data show that the northern area of the Lake has the worst heavy metals pollution, and high heavy metal concentrations were attributed to discharge of untreated and partially treated industrial waste water from cities to the north of the lake. To study geochemical features and pollution history of heavy metals, total content and chemical fractionations of Cu, Fe, Mn, Ni, Pb, and Zn were analyzed for core sediments from western Lake Taihu using the speciation extraction procedure, proposed by the Commission of the European Communities Bureau of Reference (BCR), together with grain size and organic carbon measurements. Results show that sediments are composed of organic-poor clayey-fine silts for Cores MS and DLS, and have similar geochemical features shown by heavy metals. Cu, Fe, Ni, and Zn mainly are associated with the residue fraction, Mn is concentrated in the exchangeable-carbonate and residue fractions, and Pb is concentrated in the Fe-Mn oxide fraction and organic-sulfide fraction. The fractions of Ni, Pb, and Zn bound to Fe-Mn oxide show significant correlations with Mn from the Fe-Mn oxide fraction, and the organic-sulfide fractions of Cu, Mn, Ni, Pb, and Zn are correlated with TOC. The increase of Cu, Mn, Ni, Pb and Zn content and percentage of extractable fractions in the upper layers of the sediments are correlated with anthropogenic input of heavy metals due to rapid industrial development. This coincides with rapid economic development in the Taihu basin since late 1970s. Heavy metals in the surface sediments have certain potential biological toxicity as shown by the higher SEM/AVS ratio.

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“…Sediments are an important sink and source for heavy metals and play an important role in the remobilization of metals to the aquatic environment (Sprovieri et al, 2007). The transfer of metals from sediments to organisms has been reported as an important metal source for many species (Rosales-Hoz et al, 2003). Sediment quality guidelines developed by Long et al (1995) are used to assess sediment ecological toxicity to aquatic organisms.…”

Section: Introductionmentioning

confidence: 99%

Heavy metals and metalloids content and enrichment in Gulf Coast sediments in the vicinity of an oil refinery

Zhang

Wang

Tang

et al. 2015

Journal of Geochemical Exploration

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Heavy metals in sediment cores from a tropical estuary affected by anthropogenic discharges: Coatzacoalcos estuary, Mexico

Cited by 56 publications

References 9 publications

Mercury in Biota and Surficial Sediments from Coatzacoalcos Estuary, Gulf of Mexico: Distribution and Seasonal Variation

Mercury in Biota and Surficial Sediments from Coatzacoalcos Estuary, Gulf of Mexico: Distribution and Seasonal Variation

Distribution and chemical fractionation of heavy metals in recent sediments from Lake Taihu, China

Heavy metals and metalloids content and enrichment in Gulf Coast sediments in the vicinity of an oil refinery

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