Spatial distribution, contamination and ecological risk assessment of heavy metals in surface sediments of Erhai Lake, a large eutrophic plateau lake in southwest China

Qi, Lin; Liu, Enfeng; Zhang, Enlou; Li, Kai; Shen, Jian

doi:10.1016/j.catena.2016.06.003

Cited by 180 publications

(64 citation statements)

References 53 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Among these PHTEs, the concentrations of As, Cd, and Pb in the surface sediments of Lake Dali were all higher than their corresponding background values; the values of Cr, Cu, Ni, and Zn in some sites were lower than their background values [29]. Compared with the published data from China and abroad (Table 1), we found the concentrations of PHTEs in Lake Dali were much lower than in the lakes in the Eastern Plain and Yunnan-Guizhou Plateau, but they were close to those of lakes in the Mongolia-Xinjiang Plateau and the Songnen Plain and in other countries [1,6,10,12,[19][20][21].…”

Section: Spatial Distribution Of Phtesmentioning

confidence: 42%

“…Principal component analysis (PCA) was used to compress multivariable data for analyzing relationships among the variables and identify source of PHTE in sediments [10,21]. We conducted the PCA in Canoco 5.0 with 'square root' and 'center and standardization' transformation.…”

Section: Multivariate and Geostatistical Methodsmentioning

confidence: 99%

“…To reduce the influence of the physicochemical effects on PHTE contamination, the enrichment factor (EF) is referenced as concentration data normalized by a conservative element [6,10]. Mathematically, EF is calculated as…”

Section: Pollution and Potential Ecological Risk Assessmentmentioning

confidence: 99%

“…Metal mining and smelting, fossil fuel combustion, and agrochemicals are the main anthropogenic sources of PHTE pollution [8,9]. Studies have mainly concentrated on large lakes in populated areas, such as the lower Yangtze River Basin and Southwest China, which reported that PHTE pollution is increasing serious in these lakes [10][11][12]. Remote lakes are also experiencing considerable PHTE contamination due to atmospheric deposition [13][14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

“…Recent studies have improved our understanding of PHTE pollution by characterizing spatial pollution levels, identifying dominant sources, and assessing ecological risks [1,2,10,[19][20][21]. Among them, consensus-based sediment quality guidelines (SQGs) and the potential ecological risk index (Er) are comparative methods used for assessing the risk of contamination in aquatic ecosystems [22].…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Spatial Distribution and Ecological Risk Assessment of Potentially Harmful Trace Elements in Surface Sediments from Lake Dali, North China

Sun

Wang

2019

Water

View full text Add to dashboard Cite

Potentially harmful trace element (PHTE) pollution in lakes has important implications for regional management in North China, yet is seldom investigated. Surface sediments from 13 sites in Lake Dali were collected for PHTE analysis. Combined with the enrichment factor, potential ecological risk index, and multivariate statistical analysis, the spatial distribution and ecological risk of the pollutants were studied. The results showed that the contamination levels of As, Cd, Cr, Cu, Ni, Pb, and Zn were minor to moderate. Cd, Cr, Cu, Ni, Zn, and part of Pb pollution were mainly attributed to atmospheric deposition with the development of industry in North China, and As pollution resulted from the agricultural use of chemical fertilizers and As-containing pesticides. For the overall lake, the southwest part requires the most management, and targeted measures should be tailored to mitigate the ecological risk of PHTE pollution.

show abstract

Section: Spatial Distribution Of Phtesmentioning

confidence: 42%

Section: Multivariate and Geostatistical Methodsmentioning

confidence: 99%

Section: Pollution and Potential Ecological Risk Assessmentmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Spatial Distribution and Ecological Risk Assessment of Potentially Harmful Trace Elements in Surface Sediments from Lake Dali, North China

Sun

Wang

2019

Water

View full text Add to dashboard Cite

show abstract

Spatial distribution of trace and rare earth elements of bottom sediments in Lake Ostrowite, Bory Tucholskie National Park, Poland

Sojka,

Choiński,

Siepak

2024

Land Degrad Dev

View full text Add to dashboard Cite

Lake pollution has attracted concerns worldwide; especially the excessive accumulation of trace elements (TEs) and rare earth elements (REEs) in bottom sediments can pose a serious threat to ecosystem health. However, there is still a knowledge gap on the level of sediment pollution in lakes isolated from the direct impact of pollution sources, their spatial variability, and also on the factors influencing this state. The aim of this study is to investigate the level and spatial variability of TEs and REEs concentrations, as well as to determine their source and the factors determining their distribution in the bottom sediments of Lake Ostrowite. Lake Ostrowite is the largest and deepest water body located in the Bory Tuholskie National Park (in northern Poland), which completely isolates the lake from the direct impact of pollution sources. The study covered analyses of 32 surface samples of bottom sediments. The concentrations of 24 TEs and 14 REEs were determined using inductively coupled plasma mass spectrometry (ICP‐QQQ‐MS). The assessment of the enrichment of bottom sediments in TEs and REEs employed geochemical background values (GBV) that provided the basis for the calculation of relative concentrations and geochemical indices. The determination of their sources and supply routes was based on the cluster analysis and principal component analysis. The obtained results point to the enrichment of the bottom sediments with TEs and REEs. Relative concentration values of TEs and REEs in reference to geochemical background values were in ranges from 0.01 to 7.31, at an average of 0.99, and from 0.03 to 4.29, averaging 1.76, respectively. The enrichment factor values show moderately severe enrichment of sediments at the study sites. This was primarily determined by the concentrations of Ag (from the TEs group) and Lu (from the REEs group). The metal pollution index values showed an approximate spatial distribution of points in terms of the presence of TEs and REEs. The lowest concentrations of TEs and REEs occurred on the eastern shore of the western basin of Lake Ostrowite. TEs and REEs concentrations in sediments are positively correlated with the content of organic matter and depth and negatively correlated with distance of the sampling point from the river outflow from Lake Ostrowite. On the eastern shore of the western basin, TEs and REEs concentrations are additionally shaped by wind, predominantly from the western direction. With water wave action, organic matter is transported to the central part of the western basin, where it is accumulated. Since the lake is isolated from point and nonpoint pollution sources, relevant from a biogeochemical point of view are dry and wet depositions from the atmosphere as well as aquatic vegetation, shoreline vegetation, forest litter, soil, and groundwater.

show abstract

Inflow/Outflow of Radiocesium in a Dam Lake and Its Accumulation in Sediments

Tsuji

Kohzu

Satou

et al. 2021

Impacts of Fukushima Nuclear Accident on Freshwater Environments

View full text Add to dashboard Cite

Spatial distribution, contamination and ecological risk assessment of heavy metals in surface sediments of Erhai Lake, a large eutrophic plateau lake in southwest China

Cited by 180 publications

References 53 publications

Spatial Distribution and Ecological Risk Assessment of Potentially Harmful Trace Elements in Surface Sediments from Lake Dali, North China

Spatial Distribution and Ecological Risk Assessment of Potentially Harmful Trace Elements in Surface Sediments from Lake Dali, North China

Spatial distribution of trace and rare earth elements of bottom sediments in Lake Ostrowite, Bory Tucholskie National Park, Poland

Inflow/Outflow of Radiocesium in a Dam Lake and Its Accumulation in Sediments

Contact Info

Product

Resources

About