Distribution and Source Identification of Heavy Metal Concentration in Chilika Lake, Odisha India:An Assessment Over Salinity Gradient

Banerjee, Suranjana; Pramanik, Arnab; Sengupta, Sanghamitra; Chattopadhyay, Dhrubajyoti; Bhattacharyya, Maitree

doi:10.18520/cs/v112/i01/87-94

Cited by 20 publications

(2 citation statements)

References 11 publications

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“…Considering its ecological significance, the nodal agency for monitoring of this lagoon, i.e., Chilika Development Authority (CDA) and various other researchers have monitored the water quality of this lagoon (Panda et al, 2010;Ganguly et al, 2015;Barik et al, 2019;Nazneen et al, 2019;and references therein). Consequently, various other studies have also monitored the metal concentration in the sediment of this lagoon (Banerjee et al, 2017;Barik et al, 2018;Nayak et al, 2004;Nazneen et al, 2019 and references therein) and fishes and crab tissues (Nayak et al, 2015;Parida et al, 2017;Panda et al, 2019). However, there is a significant lack of information on the metal concentrations in the water column of this lagoon, considering the positive impact of both riverine freshwater influx and saline water from the Bay of Bengal (Panda et al, 2015;Sahu et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Effect of COVID-19 Lockdown on Metal Concentration in the Water Column of Asia’s Largest Coastal Lagoon

Sh¹,

Mishra²,

Sk³

et al. 2021

Preprint

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A complete halt on all anthropogenic activities and human movement due to COVID-19 lockdown has provided a great opportunity to assess the impact of human activities on coastal marine ecosystems. The current study assessed the concentration of the metals in water samples of the largest brackish water lagoon of Asia; the Chilika lagoon in the state of Odisha, India between pre-COVID-19 and post-COVID-19 lockdown scenarios. Monthly water samples (n=30 stations) from 0.3 m depth were collected from three sectors of the lagoon seasonally; pre-monsoon, monsoon, and post-monsoon. In addition to various physical parameters [pH, salinity, alkalinity, (DO) dissolved oxygen, (TDS) total dissolved solids, and (EC) electrical conductivity] the collected water samples were analysed for 18 trace metals (Al, As, Ba, Be, Cd, Co, Cr, Cu, Fe, Mn, Mo, Ni, Pb, Sr, Th, Tl, U, V). Most of the physical parameters showed a significant variation between pre-and post-COVID-19 scenarios, except for pH and DO. The concentration of five metals (Be, Cd, Co, Ni, and Pb) remained below detection limits in all water samples. The impact of COVID-19 lockdown on the concentration of the metal in the water samples was noticed along with the three sectors of the lagoon. However, eight metals (Al, As, Cr, Fe, Mn, Th, U, and V) were significantly different between the COVID-19 scenarios and the remaining five metals were not statistically significant. The mean concentration of Al, As, Fe, Th, and V were higher in the pre-COVID-19 scenarios, whereas only Cr and Mn were higher in the post-COVID-19 scenarios. The mean concentration of U was similar among both COVID-19 scenarios, even though there were seasonal and sectoral differences. The seasonal influence of riverine influx was more evident on metal concentration during the monsoon season, whereas the difference between sectors was more prominent during the post-monsoon season. An increased number of correlations between physical parameters and metal concentration were observed in the post-monsoon season and post-COVID-19 scenario. This study provides evidence that the imposition of COVID-19 lockdown reduced metal influx in the water column and improved the water quality of the Chilika lagoon. Our results can be used as baseline for metal concentration in surface waters of the lagoon.

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Section: Introductionmentioning

confidence: 99%

Effect of COVID-19 Lockdown on Metal Concentration in the Water Column of Asia’s Largest Coastal Lagoon

Sh¹,

Mishra²,

Sk³

et al. 2021

Preprint

View full text Add to dashboard Cite

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“…Heavy metals may be introduced into the aquatic environment through natural sources such as atmospheric deposition and geological weathering or by anthropogenic sources including municipal and industrial discharges and agricultural run-off (Savadi et al, 2015;Kanchana et al, 2014). Upon their release into the aquatic environment, heavy metals eventually become deposited in se- Sediments are the major repository of heavy metals in aquatic systems and play a vital role in remobilization and enrichment of the overlying water column (Banerjee et al, 2017;Rodrigue et al, 2016). The concentration of heavy metals in sediments may be 3 -5 times higher than that of the water column with the concentration being influenced by physicochemical adsorption, physical accumulation and biological uptake (Banerjee et al, 2017;El-Madani & Hacht, 2017;Akan et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Application of Pollution Indices in the Assessment of Heavy Metal Contamination of Surface Sediments of River Bonsa, Ghana

Krampah¹,

Nyarko²,

Danlogo³

et al. 2019

GEP

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Heavy metal contamination of sediments is a major risk to ecological systems and human health. Not only do sediments influence the quality of the water column, but can be transferred to micro biota and fishes, ultimately ending up at higher trophic levels in the food chain though biomagnification. This study was carried out to assess the contamination levels of heavy metals in the sediments of river Bonsa. Ten sediment samples were taken along the river and analyzed for Copper (Cu), Lead (Pb), Manganese (Mn), Iron (Fe), Zinc (Zn), Cadmium (Cd), Chromium (Cr), Cobalt (Co), and Nickel (Ni) using Atomic Absorption Spectroscopy (AAS). Data analysis was accomplished by comparing the measured heavy metal concentrations to Australian and New Zealand Environment and Conservation Council (ANZECC) and National Oceanic and Atmospheric Administration (NOAA) fresh water sediment quality guidelines and by the computation of geo-accumulation indices and enrichment factors. The results show that apart from Ni which had two of its sample concentrations (at BS1 21.167 mg/kg and at BS2 29.374 mg/kg) exceeding the ANZECC lower limit (21 mg/kg) guideline for fresh water sediment, all other heavy metals recorded concentrations below the lower limits of their respective ANZECC standards. Out of the 10 samples analyzed, 7 recorded Mn concentrations above the NOAA ARC TEL. A one-sample t-test also showed that the mean concentrations of Cu, Pb, Cd, Zn, Ni, and Cr were significantly lower than their respective ANZECC threshold values and Fe concentration was also significantly lower than the NOAA threshold; however, there was no significant difference between Mn mean value and the corresponding NOAA guideline value. The assessment of heavy metal pollution was derived using the Enrichment Factor (EF) and geo-accumulation indices (I-geo).

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Microbial Interaction with Metals and Metalloids

Ramesh

Kameswaran

Venkatrayulu

et al. 2021

Innovations in Biotechnology for a Sustainable Future

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Distribution and Source Identification of Heavy Metal Concentration in Chilika Lake, Odisha India:An Assessment Over Salinity Gradient

Cited by 20 publications

References 11 publications

Effect of COVID-19 Lockdown on Metal Concentration in the Water Column of Asia’s Largest Coastal Lagoon

Effect of COVID-19 Lockdown on Metal Concentration in the Water Column of Asia’s Largest Coastal Lagoon

Application of Pollution Indices in the Assessment of Heavy Metal Contamination of Surface Sediments of River Bonsa, Ghana

Microbial Interaction with Metals and Metalloids

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