Seasonal Fluctuation in Heavy Metal Pollution in Iran´s Siahroud River - A Preliminary Study (7 pp)

Charkhabi, Amir Hossein; Sakizadeh, Mohamad; Rafiee, Gholamreza

doi:10.1065/espr2005.06.270

Cited by 33 publications

(15 citation statements)

References 10 publications

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“…Heavy metal contamination of sediments can critically degrade aquatic systems (Charkhabi et al 2005). Their release from the sediment can make them enter the aquatic ecosystems and bring about severe problems (Mohammed and Markert 2006).…”

Section: Introductionmentioning

confidence: 99%

Ecological risk of heavy metals in sediments of the Luan River source water

et al. 2009

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Distribution and characteristics of heavy metals enrichment in sediment were surveyed including the bio-available form analyzed for assessment of the Luan River source water quality. The approaches of sediment quality guidelines (SQG), risk assessment code and Hakanson potential ecological risk index were used for the ecological risk assessment. According to SQG, The results show that in animal bodies, Hg at the sampling site of Wuliehexia was 1.39 mg/kg, Cr at Sandaohezi was 152.37 mg/kg and Cu at Hanjiaying was 178.61 mg/kg exceeding the severe effect screening level. There were 90% of sampling sites of Cr and Pb and 50% sites of Cu exceeded the lowest effect screening level. At Boluonuo and Wuliehexia, the exchangeable and carbonate fractions for above 50% of sites were at high risk levels and that for above 30% of sites at Xiahenan and Wulieheshang were also at high risk levels. Other sites were at medium risk level. Compared to soil background values of China, Hg and Cd showed very strong ecological risk, and the seven heavy metals of Hg, Cd, Cu, As, Pb, Cr, Zn at ecological risk levels were in the descending order. The results could give insight into risk assessment of environmental pollution and decision-making for water source security.

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Section: Introductionmentioning

confidence: 99%

Ecological risk of heavy metals in sediments of the Luan River source water

et al. 2009

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“…The 720-km-long Sefid Rud River discharges into the nearshore area of sites 5 and 6 and this river is contaminated with agricultural, food processing, pulp and paper, industrial and urban wastes from various sources located in its 67,000 km 2 drainage basin. The pollution of waterways in Iran with heavy metals from a variety of sources was discussed by Diagomanolin et al (2004) and Charkhabi et al (2005). Significant findings on heavy metal contamination in the Karoon River drainage basin was presented by Diagomanolin et al (2004), while heavy metal pollution of the Siahroud River was reported by Charkhabi et al (2005).…”

Section: Discussionmentioning

confidence: 97%

Contamination of Nearshore Surficial Sediments from the Iranian Coast of the Caspian Sea

Parizanganeh

Lakhan

Jalalian

et al. 2007

Soil and Sediment Contamination: An International Journal

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Concentrations of heavy metals (Al, Cd, Cu, Pb, Ni, Zn) were analyzed from nearshore surficial sediments collected from the alongshore direction of the Iranian coast of the Caspian Sea. The granulometric composition of fourteen samples was determined. Three grain-size fractions (0.355, 0.212 and 0.075 mm) from each sample, plus fourteen bulk samples, were examined for the presence of heavy metals. Laboratory analysis utilized a cold acetic acid extraction procedure, followed by inductively coupled plasma optical emission spectroscopy. Box and Whisker plots demonstrated that metal concentrations were not homogeneously distributed, and there were large spatial variations in the median concentrations of heavy metals at each sample site. The statistical technique of discriminant analysis revealed that the six heavy metals had distinct and statistically significant concentrations at various locations along the coast. Elevated concentration levels reflected metal loadings from anthropogenic sources located in the vicinity of sampled sites.

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“…The accumulation of metal contamination in sediments can pose serious environmental problems and can critically degrade aquatic systems (Tessier and Campbell 1987;Charkhabi et al 2005;Lien et al 2005). When environmental conditions change (pH cation exchange capacity, nutrient status, redox potential, etc.…”

Section: Introductionmentioning

confidence: 98%

Fractionation of heavy metals in bottom sediments in Chahnimeh 1, Zabol, Iran

Javan

Hassani

Ahangar

et al. 2015

Environ Monit Assess

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In the present study, 180 sediment samples were collected from the Chahnimeh 1 reservoir to investigate the concentration of metal and sequential extraction. Five geochemical phases (exchangeable fraction, carbonate fraction, Fe/Mn oxide fraction, organic fraction and residual fraction) for the determination of the speciation of heavy metals (Zn, Fe, Cd, Pb, Mn, Ni) as proposed by Tessier was applied to sediments collected from Chahnimeh 1. Results were obtained for nickel and cadmium, as over 40 % of metal was present in the exchangeable phase and bound to carbonate. According to the risk assessment code (RAC), sediments that have 31 to 50 % carbonate and exchangeable fraction are high risk. Similar results were obtained for zinc and lead. The major fraction of the two metals (63 % of the total concentration for lead and 85 % of the total concentration for zinc) occurred in the residual phase and fraction-bound hydrous Fe-Mn oxides. The risk assessment showed moderate risk for lead and no risk for zinc. This indicates that the Igeo and IPOLL used in the present investigation showed no pollution to moderate pollution in terms of metals in sediments.

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Seasonal Fluctuation in Heavy Metal Pollution in Iran´s Siahroud River - A Preliminary Study (7 pp)

Abstract: Preventive measures need to be undertaken in the land-use systems and watersheds of the Siahroud River to reduce the pollution levels of Pb, Cd, Mn and Fe.Cd, Mn and Fe.

Cited by 33 publications

References 10 publications

Ecological risk of heavy metals in sediments of the Luan River source water

Ecological risk of heavy metals in sediments of the Luan River source water

Contamination of Nearshore Surficial Sediments from the Iranian Coast of the Caspian Sea

Fractionation of heavy metals in bottom sediments in Chahnimeh 1, Zabol, Iran

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