Low concentration of heavy metals in the Yangtze estuarine sediments, China: a diluting setting

Chen, Zhongyuan; Saito, Yoshiki; Kanai, Yutaka; Wei, Taoyuan; Li, Luqian; Yao, Heshun; Wang, Zhanghua

doi:10.1016/j.ecss.2003.11.021

Cited by 158 publications

(69 citation statements)

References 24 publications

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“…Relative estimations of Zn concentration of the stream Ghaghara with different rivers of the World have been given in Table 5. The main sources of Zn are smelting, fertilizers, and pesticides used in agriculture, soil erosion due to rainfall, fossil fuel, and land construction activities (Higgins et al 2007;Xiang et al 2002;Chen et al 2004). Zinc is found on the earth's crust in an average concentration of 80 mg/kg.…”

Section: Resultsmentioning

confidence: 99%

“…Many activities such as land use/land cover change Narsimlu et al 2015;Kumar et al 2017), sewage sludge, mine waste, industrial waste, waste water (Gautam et al 2013), atmospheric pollutants, pesticides, and fertilizer applications are the main activities controlling the flow of river and contributors of heavy metals discharged into rivers, lakes, estuaries, and marines (Chen et al 2004;Adaikpoh et al 2005; Lepane and Heonsalu 2007;Amin et al 2014;Singh et al 2016Singh et al , 2017. Beside these wastes, rivers also carry large quantities of solid wastes, including thousands of animal carcasses and hundreds of human corpses are dumped into the active channel of the rivers and on its banks every day in recent years.…”

Section: Introductionmentioning

confidence: 99%

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Assessment of heavy metal contamination in the sediment of the River Ghaghara, a major tributary of the River Ganga in Northern India

et al. 2017

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The present study includes a systematic analysis of sediment contamination by heavy metals of the River Ghaghara flowing through the Uttar Pradesh and Bihar in Indian Territory. To estimate the geochemical environment of the river, seven heavy metals, namely Co, Cu, Cr, Ni, Cd, Zn, and Pb were examined from the freshly deposited river bed sediment. All the sediment samples were collected on a seasonal basis for the assessment of fluctuation in 2014-2015 and after preparation samples were analyzed using standard procedure. Result showed that heavy metal concentration ranged between 11.37 and 18.42 mg/kg for Co, 2.76 and 11.74 mg/kg for Cu, 61.25 and 87.68 mg/kg for Cr, 15.29 and 25.59 mg/kg for Ni, 0.21 and 0.28 mg/kg for Cd, 13.26 and 17.59 mg/kg for Zn, 10.71 and 14.26 mg/ kg for Pb in different season. Metal contamination factor indicates the anthropogenic input in the river sediment was in the range of (0.62-0.97) for Co, (0.04-0.26) for Cu, (0.68-0.97) for Cr, (0.22-0.38) for Ni, (0.70-0.93) for Cd, (0.14-0.19) for Zn, and (0.54-0.71) for Pb. The highest contamination degree of the sediment was noticed as 4.01 at Ayodhya and lowest as 3.16 at Katerniaghat. Geo-accumulation index was noted between (0 and 1) which showed that sediment was uncontaminated to moderately contaminated and may have adverse affects on freshwater ecology of the river. Pollution load index (PLI) was found highest at Chhapra which was 0.45 and lowest at Katerniaghat which was 0.35 and it indicates that the river sediment has a low level of contamination. Significant high correlation was observed between Co, Cu, and Zn, it suggests same source of contamination input is mainly due to human settlement and agriculture activity. Positive correlation between Zn, Co, Cu, Cr, and Ni indicated a natural origin of these elements in the river sediment. Cluster analysis suggests grouping of similar polluted sites. The strong similarity between Co, Zn, Pb, Ni, Cu, and Cd showed relationship of these metals come from the same origin, which is possibly from natural and anthropogenic input which was also confirmed by correlation analysis. Using the various pollution indicators it was found that the river bed sediment is less contaminated by toxic metals during the study but the sediment quality may degrade in the near future due to increasing anthropogenic inputs in the river basin, hence proper management strategies are required to control the direct dumping of wastewater in the river.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Assessment of heavy metal contamination in the sediment of the River Ghaghara, a major tributary of the River Ganga in Northern India

et al. 2017

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“…This may be related to the higher capability of Santa Maria soils, which are richer in fine grain size particles, to retain those elements, as suggested by the positive correlation between % clay-silt and those metals. This behavior is similar to the prodelta facies (silty clay and clayey silt) of the Yangtze estuary, which acts as a depositional sink for heavy metals (Chen et al, 2004). According to Hooda and Alloway (1998), a soil with large amounts of clay has a greater metal sorption capacity and vice versa.…”

Section: Discussionmentioning

confidence: 66%

Baseline Levels of Metals in Volcanic Soils of the Azores (Portugal)

Amaral

Cruz

Cunha

et al. 2006

Soil and Sediment Contamination: An International Journal

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“…The levels of some of these heavy metals are below the WHO regulatory permissible limits of (0.03mg/g Cu), (0.02mg/g Pb) set by the WHO [1]. [20] Eastern Harbour, Egypt 14.09 -Abdallah and Abdallah (2007) [21] River Ganga, India 0. [23] Fig .…”

Section: Chemical Analysismentioning

confidence: 99%

Distribution of Heavy Metals in Sediments at the Commercial and Fishing Ports in Samoa

Imo¹,

Latu²,

Vaurasi³

et al. 2014

IJESD

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Abstract-Contamination of heavy metals in coral reefs and coastal areas is a serious ecotoxicological and environmental problem due to direct runoff from anthropogenic wastes, commercial vessels and discharge from industrial effluents which may accumulate in the suspended particulate matter and settle on the bottom sediment. Surface sediment samples were collected from Samoa's commercial and fishing port and studied for the concentration and distribution of heavy metals. Two heavy metals (Cu, Pb) were detected from each port with some concentration below the permissible maximum concentration of environment quality standard set by the World Health Organization.

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Low concentration of heavy metals in the Yangtze estuarine sediments, China: a diluting setting

Cited by 158 publications

References 24 publications

Assessment of heavy metal contamination in the sediment of the River Ghaghara, a major tributary of the River Ganga in Northern India

Assessment of heavy metal contamination in the sediment of the River Ghaghara, a major tributary of the River Ganga in Northern India

Baseline Levels of Metals in Volcanic Soils of the Azores (Portugal)

Distribution of Heavy Metals in Sediments at the Commercial and Fishing Ports in Samoa

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