Assessment of heavy metal contamination in urban river sediments in the Jiaozhou Bay catchment, Qingdao, China

Xu, Fu-Liu; Liu, Zhao‐Qing; Cao, Yingchang; Qiu, Longwei; Feng, Jia; Xu, Feng; Tian, Xiaodan

doi:10.1016/j.catena.2016.11.004

Cited by 116 publications

(56 citation statements)

References 48 publications

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“…16,17 The main natural source of HMs is their release into the soil during rock weathering. 18 Anthropogenic sources are the important aspect of soil HM pollution and may include mining, 19 fossil fuel combustion, 20 waste disposal, 21 sewage irrigation, 22 urban effluent, 23 vehicle exhausts, 24 atmospheric deposition, 10 pesticides and fertilizer application. 25,26 For example, the long-term use of pesticides and chemical fertilizers has resulted in accumulation of several metals, such as nickel (Ni), copper (Cu), zinc (Zn) and cadmium (Cd).…”

Section: Introductionmentioning

confidence: 99%

Accumulation, temporal variation, source apportionment and risk assessment of heavy metals in agricultural soils from the middle reaches of Fenhe River basin, North China

2019

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Section: Introductionmentioning

confidence: 99%

Accumulation, temporal variation, source apportionment and risk assessment of heavy metals in agricultural soils from the middle reaches of Fenhe River basin, North China

2019

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“…Trace elements and organic compounds present in waters and sediments of urban rivers are one of the major quality issues in many fast-developing cities [11][12][13][14][15][16]. The presence of certain trace elements may highlight certain sources, for example, trace elements such as Ag, Cd, Cr, Cu, Hg, Ni, Pb and Zn from domestic and industrial effluents [17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

“…The levels of hydrological pollution in the Chennai zone in the south-eastern part of India have increased in recent years through uncontrolled disposal of waste water and pollutants due to human activities [39,40]. Hence, sediment quality is widely used to assess the environmental risk, which has been extended to water resources and the food chain [20,[41][42][43]. River sediments are an important sink but also a source for assessing heavy metal pollution in rivers as they present a great affinity for the solid fraction [36,[44][45][46][47][48] and have a long residence time in fluvial systems [49][50][51][52].…”

Section: Introductionmentioning

confidence: 99%

Geochemical Footprint of Megacities on River Sediments: A Case Study of the Fourth Most Populous Area in India, Chennai

et al. 2019

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An intensive surface sediment survey was carried out over 24 locations from the upstream to downstream sections of two large rivers (Adyar and Cooum) in Chennai (India) during the February dry season of 2015. Trace element concentrations were assessed on a <63 µm fraction using the Geoaccumulation Index (Igeo) and the newly proposed Geochemical Urban Footprint Index (GUFI), which can be performed to determine the pollution status of any megacity river influenced by urban development. The sediment quality of Chennai’s rivers was also compared to worldwide megacity pollution using sediment quality guidelines (SQGs), and a new megacity pollution ranking was determined. The Igeo results indicate that the Chennai rivers studied are strongly to extremely polluted regarding trace element content of sediment. Silver (Ag), Cadmium (Cd) and Mercury (Hg) are the most significant tracers of urban contamination. Chromium (Cr) concentrations show an industrial contamination gradient in relation to levels of other trace elements (As, Cu, Ni, Pb, and Zn) at the Chennai megacity scale. The GUFI ranges from moderate to extreme contamination, particularly in the downstream stretches of the two rivers. This spatial trend is related to various point sources and identified at specific sampling stations, with a lack of identifiable buffer zones. According to the worldwide comparison of megacity pollution, Chennai is ranked in fifth position. The present position can be attributed to a number of explanations: a population explosion associated with the unplanned growth of the city and non-controlled point sources of pollution in Chennai’s waterways.

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“…Hg, Cu, Ni and Zn in the Dagu River were present far more than what is allowed according to the standards of the Florida Department Environmental Protection (FDEP) [13]. Cd, As, and Pb contamination occurred in the eastern catchment of the Jiaozhou Bay [8]. In the Jiaozhou Bay, Cd and Sb in sediments were in relatively higher enrichment levels, and Cu, Ni, Cd and Zn were at low to medium risks [14].…”

Section: Introductionmentioning

confidence: 92%

“…Rivers play an important role in the development of the regional economy. However, excessive human activities such as industrial production, agricultural irrigation and domestic water use has caused the river to become a discharge channel for industrial and domestic pollutants [8,9]. Coupled with runoff and sediment load that has drastically reduced, the dilution and absorptive capacity of the river has correspondingly dropped, and environmental risks are becoming increasingly severe.…”

Section: Introductionmentioning

confidence: 99%

Distribution, Enrichment and Transport of Trace Metals in Sediments from the Dagu River Estuary in the Jiaozhou Bay, Qingdao, China

et al. 2019

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26 river bank sediments and 15 estuary seafloor sediments were sampled from the Dagu River and the estuary of Northwestern Jiaozhou Bay to determine contaminations of heavy metals and metalloids (Cu, Pb, Zn, Cr, Cd, Hg and As). The trace metal contents in sediment from the estuary area were much higher than those of the river. Correlation analysis showed that except for Pb, the metals were mainly controlled by the grain size, and enriched by adsorption of aluminosilicate minerals, Fe/Mn oxides and organic matter in river and estuary sediments. In addition to Cu in some stations, the metals met the requirements of the marine organism and humans for the quality of the marine environment. The concentrations of Cu, Pb, Cr, Hg and As were between the threshold effect level (TEL) and probable effect level (PEL), indicating those metals might have occasional adverse effects. Results of Enrichment Factor values revealed that the entire study area was enriched in Pb and Hg, at moderate environmental risk, but the estuary was more significant. Pb and Hg contaminations in this area were mainly from coal combustion and automobile emissions. River runoff and atmospheric deposition dominated the metals distribution and enrichment in the study area. Contaminants in sediments entering the estuary were further transported to the south and east under the river runoff and reciprocating current in the Jiaozhou Bay.

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Assessment of heavy metal contamination in urban river sediments in the Jiaozhou Bay catchment, Qingdao, China

Cited by 116 publications

References 48 publications

Accumulation, temporal variation, source apportionment and risk assessment of heavy metals in agricultural soils from the middle reaches of Fenhe River basin, North China

Accumulation, temporal variation, source apportionment and risk assessment of heavy metals in agricultural soils from the middle reaches of Fenhe River basin, North China

Geochemical Footprint of Megacities on River Sediments: A Case Study of the Fourth Most Populous Area in India, Chennai

Distribution, Enrichment and Transport of Trace Metals in Sediments from the Dagu River Estuary in the Jiaozhou Bay, Qingdao, China

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