Assessing heavy metal contamination and ecological risk in Poyang Lake area, China

Xie, Zhenglei; Jiang, Yinghui; Zhang, Hezi; Wang, Dan; Qi, Shu‐Hua; Du, Zheng; Zhang, Hua

doi:10.1007/s12665-015-5240-7

Cited by 46 publications

(15 citation statements)

References 36 publications

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“…The deposited metals are released into the overlying water in response to chemical, biological and other physical disturbances [22]. Their non-biodegradable, persistent and irreversible characteristics play a critical role in different trophic levels of the food chain due to bioaccumulation and toxicity [72]. Heavy metals in aquatic systems are present as dissolved ions, complexes, suspended and colloid ions [2].…”

Section: Introductionmentioning

confidence: 99%

“…Upon entering the aquatic system, they have a high affinity to get adsorbed on the fine-grained sediments and consequently pose a threat to aquatic biota particularly the sediment-dwelling organisms [74]. The geochemical analysis of sediments such as enrichment factor and geo-accumulation index are commonly used tools to assess heavy metal pollution [9,27,60,72]. The pollution level in lake sediments is also addressed by comparing with sediment quality guidelines [7,27,52].…”

Section: Introductionmentioning

confidence: 99%

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Geochemistry and pollution status of surface sediments of Loktak Lake, Manipur, India

Mayanglambam

Neelam

2020

SN Appl. Sci.

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Surface sediments (n = 29) from Loktak Lake, the largest freshwater lake in northeastern India, were studied for geochemistry, mineralogy and the heavy metal pollution of the lake sediments was assessed. The XRD spectra of bulk sediments showed the dominance of quartz and clay fractions showed the dominance of illite and chlorite. The major oxides consist dominantly of SiO 2 , Al 2 O 3 and FeO with low concentrations of K 2 O, Na 2 O and CaO. The depletion of CaO, Na 2 O and K 2 O compared to upper continental crust, post-Archean average shale and North-American shale composite indicated moderate to strong weathering, recycling of the source rock and their removal during transportation. The chemical index of alteration values (76.86-84.98) also suggested moderate to extreme chemical weathering of the Loktak Lake catchment lithologies. The mean concentrations (in mg/kg) of Zn (117 ± 23.45), Co (34 ± 13.67), Fe (7 ± 1.38 wt%), Cu (67 ± 12.87), Cr (282 ± 45.25) and Ni (194 ± 30.12) are about 2-4 times higher than that of the upper continental crust, except for Mn (425 ± 168.99 mg/kg) and Pb (17 ± 7.47 mg/kg). The heavy metal concentrations follow the trend of Fe > Mn > Cr > Ni > Zn > Cu > Co > Pb. The assessment of heavy metal pollution using enrichment factor, geo-accumulation index and modified degree of contamination suggested non-contamination to moderate contamination of sediments. According to sediment quality guidelines, the sediment-dwelling biota could be affected by the higher concentrations of Ni and Cr. The mean-effect range median-quotient suggests medium-high to high potential of the effects of heavy metal pollution. The uniformly higher concentration of heavy metals in general and Ni and Cr, in particular, indicated the dominance of natural (ophiolitic) sources with no or little, if any, anthropogenic influence.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Geochemistry and pollution status of surface sediments of Loktak Lake, Manipur, India

Mayanglambam

Neelam

2020

SN Appl. Sci.

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“…Ecological risk factor (Er i ): The ecological risk factor (Er i ) is used to determine the ecological risk of an area contaminated with heavy metals [3]. This risk assessment method has been widely used to determine the impact of heavy metal contamination [37,38] and is expressed by:…”

Section: Geoaccumulation Index (I Geo )mentioning

confidence: 99%

Environmental and health risks of metal-contaminated soil in the former tannery area of Hazaribagh, Dhaka

et al. 2020

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Soil and plant samples collected from Hazaribagh, the former tannery area in Dhaka, Bangladesh, were analyzed for heavy metals (Cr, Pb, Ni, Zn, Cd, and Cu). The pollution and health risks of the metals were assessed with commonly used indicators. The mean soil Cr concentration was 4321 mg/kg (range 294-23,148 mg/kg). Most sites had a moderate to high degree of contamination and were classified as extremely polluted (Pollution Load Index > 1). The non-carcinogenic hazard index was greater than 1 for Pb and Cr for both children and adults, which indicates considerable non-cancer health risk. The combined cancer risks for Pb and Cr exceeded the allowable range of 1 × 10 −6-1 × 10 −4 for most sites (8 out of 11 sites in the case of adults, all sites in the case of children) with Cr being the dominant contributor and oral ingestion the primary pathway. The cancer and non-cancer risks for children were 26-and 3-fold higher, respectively, than for adults. Among all heavy metals, Pb and Zn were the most susceptible to leaching and becoming mobilized in groundwater. Concentrations of Pb, Cr, and Zn in edible parts of vine spinach (Basella alba) exceeded safe limits. However, Pb and Cu showed significant accumulation in plants (Mean Transfer Factor of 1.064 and 0.94, respectively, for Pb and Cu), while Cr exhibited relatively lower bioavailability. The spatial distribution of heavy metal contamination and associated risks presented in this study will allow policymakers to pinpoint areas of intervention for remediation.

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“…Due to the high density and continued anthropogenic activities in urban areas, the pollution level of risk elements in urban areas are significantly higher than in rural areas [20]. Although existing studies of risk elements paid high attention to industrial lands, suburbs and surrounding roads, campuses, reservoirs, and playgrounds in urban areas [21][22][23][24][25][26] and many types of researches have been implemented on risk elements content, spatial distribution, contamination level, source identification, health risk in past decades [27][28][29][30][31], some specific and potentially vital exposure locations such as children's amusement parks were neglected. In China, amusement parks are the main recreational places for children.…”

Section: Introductionmentioning

confidence: 99%

Contamination, Distribution and Health Risk Assessment of Risk Elements in Topsoil for Amusement Parks in Xi’an, China

Guo¹,

Su²,

Lin³

et al. 2020

Pol. J. Environ. Stud.

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The index of geo-accumulation (I geo) and the pollution load index (PLI) were used to assess the pollution level and the U.S. Environmental Protection Agency (EPA) health risk model was implemented to determine the health risk for children. Besides, a geographic information system (GIS) was utilized to map the distribution characteristics of risk elements contents. The results showed that: (1) the mean content of Mn was the highest in each park. Besides, the mean content of all risk elements except As exceeded the background value of Shaanxi in each park. (2) The I geo of Co was obviously higher than other elements in each park and the highest (4.07) content occurred in the Xing Qing Park (XQP). The pollution condition of the Urban Sports Park (USP) was the most serious among the four parks. (3) The children were more susceptible to risk elements pollution through oral intake. (4) The hazard indices (HI) of non-carcinogenic risk (NCR) were within the safe range (HI = 1) and the carcinogenic risks (CR) of Cr, Ni, As and Co for children were within the receivable range in each park.

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Assessing heavy metal contamination and ecological risk in Poyang Lake area, China

Cited by 46 publications

References 36 publications

Geochemistry and pollution status of surface sediments of Loktak Lake, Manipur, India

Geochemistry and pollution status of surface sediments of Loktak Lake, Manipur, India

Environmental and health risks of metal-contaminated soil in the former tannery area of Hazaribagh, Dhaka

Contamination, Distribution and Health Risk Assessment of Risk Elements in Topsoil for Amusement Parks in Xi’an, China

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