Geochemistry, spatial distribution and environmental risk assessment of the surface sediments: Anchar Lake, Kashmir Valley, India

Lone, Aasif Mohmad; Shah, Rayees Ahmad; Achyuthan, Hema; Fousiya, A. A.

doi:10.1007/s12665-018-7242-8

Cited by 26 publications

(12 citation statements)

References 69 publications

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“…The soils in the Loktak catchment area are also characterized by low pH, organic carbon rich and high clay content [55]. Organic matter contents of Anchar Lake sediments are controlled by the type of bedrock geology in the catchment, climate, lake flora and fauna and anthropogenic influences along the catchments [37]. The acidic pH and the rich organic matter content of…”

Section: Salient Characteristics Of Loktak Lake Sedimentsmentioning

confidence: 99%

“…The high organic carbon from the decomposed lake vegetation could be a sink of heavy metals in the lake sediments [26]. Anchar Lake sediments of Kashmir Valley had low to moderate contamination of Cu, Ni, Zn, Co and Cr which might be derived from agricultural inputs, domestic effluents and untreated sewage discharges [37]. Loktak Lake, located in the state of Manipur, is the largest shallow natural freshwater lake in northeastern India.…”

Section: Introductionmentioning

confidence: 99%

“…Comparison of heavy metal abundances (in mg/kg) of Loktak Lake sediments with those of other freshwater lakes of the world a Das and Choudhury [12]; b Jeelani and Shah [28]; c Chakrapani [8]; d Arain et al [2]; e Xie et al [72]; f Gopal et al [19]; g Selvam et al [57]; h Goher et al [18]; i Lone et al[37]; j Das and Haake[10] …”

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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: Salient Characteristics Of Loktak Lake Sedimentsmentioning

confidence: 99%

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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“…Thus, new indexes came into force, such as the enrichment factor (EF) that examines the heavy metal concentration in relation to the content of an immobile element (most often Al) both in the sample and in the reference conditions. Another index is the Geoaccumulation index that divides the sample concentration with the corresponding background reference value, estimating in that way possible variations in background values and showing if the pollution is a natural process result or an anthropogenic input.…”

Section: Methodsmentioning

confidence: 99%

Trace metals’ contamination in water and soils in the vicinity of a small–medium waste electrical and electronic equipment recycling plant

Tzoraki

Zkeri

Lasithiotakis

et al. 2019

Env Prog and Sustain Energy

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An e-waste recycling plant's ecological burden is correlated to soil and water, inside and outside the plant with inductively coupled plasma-mass spectrometry. Correlation between heavy metal concentrations was calculated with Spearman's rho correlation coefficients. Ecological risk was assessed with ecological risk indexes (RIs) such as Hakanson's ecological RI, Geoaccumulation index, and enrichment factors. Heavy metals in water comply with drinking water criteria, except Pb in one water sample W2. Concentrations of Pb, Cr, Ni, Cu, Mn, and Zn were higher in the rainwater collection tank (43.50, 10.90, 18.87, 81.17, 177.99, and 330.17 μg/L) than the surficial water inside (8. 93, 1.27, 4.97, 17.0, 91.87, and 72.97 μg/L) and outside the plant (4.18, 1.28, 1.60, 10.35, 26.21, and 12.10 μg/L). In most water samples, As, Li, Mg, Ca, Na, Ba, Si, Sr, U, and V concentrations were at similar levels and are not influenced by the company's activities except the rainwater tank. Water samples correlation results showed statistically significant positive correlation between (a) Al, Fe, Pb, Ce, Co, La, Nd, Sm, Y and (b) Cu and Mn-an anthropogenic influence related with e-waste. Ecological RIs for soils showed low to moderate pollution. The most enriched soil samples in Cu, Pb, Zn, Cd, and Hg were two samples west of the plant, and another two east of the plant. Pb comes from cathode ray tubes. A pH-edge desorption study concluded that the cation exchange processes with clays and the strong sorption affinity of Fe oxides keep metals bound to the soil matrix. K E Y W O R D S enrichment factor, e-waste, geoaccumulation index, Hakanson index, heavy metals, recycling area, scrap facility, WEEE

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“…Fluvial transport of sediments incorporates both internal and external materials into lake basins, and such transported material could preserve important environmental information about lakes and their catchments (Liu et al 2017;Meyers 2003). Physical and chemical compositions of sediment being deposited in lake basins are cumulatively influenced by catchment lithology, climate, weathering and erosion processes, and thus, lake sediments provide an imperative archive to study the past and present environmental changes (Lone et al 2018a). Sedimentation in lake basins forms a distinct depositional pattern resulted due to differential hydrological regimes, physical and chemical weathering of catchment rocks and sediment transportation and deposition through multiple waterways (Vijayaraj and Achyuthan 2015).…”

Section: Introductionmentioning

confidence: 99%

Sediment distribution pattern and environmental implications of physico-chemical characteristics of the Akkulam-Veli Lake, South India

et al. 2019

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This study reports the spatial distributions of diatom assemblages and potential relationships between diatom diversity and environmental variables (C/N ratio, CaCO 3 %, clay mineralogy) using multivariate analyses in surface sediments of the Akkulam-Veli Lake. Surface sediment samples were collected at 19 sites throughout the lake to analyse diatom distribution, TOC, N, CaCO 3 %, clay mineralogy and sediment texture. The results suggest that the clay fraction is predominant in the eastern flank, whereas sand fraction is more in the western flank. TOC% and CaCO 3 % in the lake floor sediments are attributed to high organic activity within the lake and contributions from the vegetation around the lake margins. The results suggest that N is being added to the lake from secondary sources from catchment area leading to eutrophication of the lake. Further, clay mineralogy of the sediment samples reveals that kaolinite mineralogy dominates in clay fractions. Diatom studies show rich diversity of freshwater, marine and brackish diatoms and abundance of pollution-reflecting species such as Cyclotella sp. and Navicula sp.

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Geochemistry, spatial distribution and environmental risk assessment of the surface sediments: Anchar Lake, Kashmir Valley, India

Cited by 26 publications

References 69 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

Trace metals’ contamination in water and soils in the vicinity of a small–medium waste electrical and electronic equipment recycling plant

Sediment distribution pattern and environmental implications of physico-chemical characteristics of the Akkulam-Veli Lake, South India

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