Assessment of heavy metal contamination in Hediste diversicolor (O.F. Müller, 1776), Mugil cephalus (Linnaeus, 1758), and surface sediments of Bafa Lake (Eastern Aegean)

Aydin-Onen, S.; Küçüksezgi̇n, Fi̇li̇z; Koçak, Ferah; Açık, Şermin

doi:10.1007/s11356-014-4047-5

Cited by 29 publications

(9 citation statements)

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“…Seasonal mean Cu concentrations measured in the sediment were found to be above the TEC values only at locations L2 and L3. The Cu concentrations measured within the scope of this study are compatible with those found in previous studies of the sediment in Lake Bafa 33,34 . Cu is a natural mineral that is abundant in nature, quite apart from its widespread use in industry and elsewhere 69 .…”

Section: Discussionsupporting

confidence: 91%

“…Seasonal mean Cr concentrations exceeded TEC at all sampling points except C2, and at location L1, Cr was also measured at higher than PEC in autumn. High Cr concentrations were also found in previous studies of the sediment of Lake Bafa 33,34,35 . Its main sources are industrial wastewaters, mainly industrial leather wastewater and domestic wastewater 75 .…”

Section: Discussionsupporting

confidence: 80%

“…Moreover, Cd concentrations at L3 and C1 were higher than the TEC in autumn and summer, respectively. Relatively high Cd concentrations were detected compared to previous studies 34,35 in the same area. This variation in concentrations of Cd, which is very toxic in the aquatic ecosystem, is due to the different sampling points and monitoring periods used.…”

Section: Discussioncontrasting

confidence: 61%

“…Moreover, Pb and Zn concentrations were measured at levels below the ASVs. In a study carried out by Aydın-Onen et al 34 , it was revealed that Zn has the ability to accumulate in biota more than in sediment in Lake Bafa. The Pb concentration exceeded the ASV only in the autumn at location C1, which is close to a road with heavy traffic.…”

Section: Discussionmentioning

confidence: 99%

“…These efforts are increasing the significance of monitoring and assessment, especially in sediments and biota in surface water resources in Turkey. Building on existing literature, a limited number of studies have been undertaken on heavy metal pollution in the sediments of Lake Bafa [33][34][35][36] . Previous studies in the area have generally been focused on spatial changes in heavy metal pollution, and the distribution of heavy metals within the soil structure.…”

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Concentrations and sources of heavy metals in shallow sediments in Lake Bafa, Turkey

Algül

Beyhan

2020

Sci Rep

124

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the concentrations and sources of heavy metals in shallow sediments in Lake Bafa were investigated. the concentrations of nine heavy metals and the total organic carbon content in sediment samples were determined for between Summer 2015 and Spring 2016. The mean contents of heavy metals were in decreasing order fe > Mn > ni > cr > Zn > cu > co > pb > cd. Sediment quality guidelines indicate that Cr, Cu, and Ni pose a considerable threat to the aquatic ecosystem in Lake Bafa. Site L3 was found to be contaminated with cd, cr, and ni, and the pollution load indices suggest that these metals had anthropogenic sources. the sediment samples were notably enriched with cd and ni. there is no consistent trend for seasonal effect in terms of the sample locations. However, at all sampling points, an increase in heavy metal concentrations was observed in the autumn. the results of a multivariate analysis indicate that the sources of co, cu, fe, Mn, pb, and Zn were all natural, the sources of cd were anthropogenic, and the sources of ni and cr were both anthropogenic and natural. these results highlight that cd, cr, and particularly ni represent the most serious threat in terms of heavy metal pollution in the ecosystem of the lake. Heavy metals mainly enter aquatic environments as a result of a variety of human activities (e.g., agriculture, combustion, corroded underground pipes, industrial plants, sewage, smelting, and vehicles) 1-3. Exposure to heavy metals has been linked to various negative health effects, including cancer, behavioural problems, impaired intelligence, developmental problems, kidney damage, and miscarriage or stillbirth 4. Heavy metals are not readily degraded in the environment, and those that enter a water body can remain there for some time. They are usually found in low concentrations in aquatic systems 5 , and high concentrations of heavy metals in sediments can indicate anthropogenic rather than natural sources 6,7. Heavy metals are poorly soluble in water, so predominantly sorb to suspended particles that then settle as sediment 8. Heavy metals can thus enter the food chain in the aquatic environment, and become available for accumulation in biota 9. Fish, which are at the top of the food chain and are an important food source for humans, can accumulate heavy metals in their tissues 10 , and this characteristic makes them an effective indicator of pollution 11. Accordingly, assessment of pollution from heavy metals in sediments in the environment is very important in terms of its effects on aquatic organisms and human health 12. Lake sediments are a sink for heavy metals 13,14 , and heavy metal concentrations are generally higher in sediment than in water 15. Indeed, concentrations of heavy metals in water are sometimes lower than detection limits, meaning that sediment should be analysed to assess levels of contamination by heavy metals in the aquatic system 16-18. Lake sediments mostly act as a sink for heavy metals; on the other hand, they can also act as a source to the overlying water 19,20. C...

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Section: Discussionsupporting

confidence: 91%

Section: Discussionsupporting

confidence: 80%

Section: Discussioncontrasting

confidence: 61%

Section: Discussionmentioning

confidence: 99%

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