Heavy metal pollutants and their spatial distribution in surface sediments from Thondi coast, Palk Bay, South India

Perumal, Karthikeyan; Antony, Joseph Thatheyus; Subagunasekar, M

doi:10.21203/rs.3.rs-197854/v1

Cited by 3 publications

(5 citation statements)

References 55 publications

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“…To predict the source distribution of toxic metals in this study area multivariate analysis was employed. Pearson's correlation analysis explains the relationship between the PTM and the primary contributors in the environment [69,70]. Pearson A significant medium positive correlation between Cu and As (r = 0.59) was observed (Fig.…”

Section: Sources Of Ptm Contamination In the Study Areamentioning

confidence: 94%

“…Toxic metals in soil/sediment originate from municipal sewage waste, sludges, mining effluent, and agricultural inputs including erosion of sulfides ores, phosphorites, black shale deposits, and hydrothermal mineralized rocks [69]. To predict the source distribution of toxic metals in this study area multivariate analysis was employed.…”

Section: Sources Of Ptm Contamination In the Study Areamentioning

confidence: 99%

“…Statistical analysis is mostly used to differentiate factors for example the natural and anthropogenic contributions of the PTMs based on the different levels of relationship [69,73]. Principal component analysis was used to find out the likely relationships of the variables (PTMs) and their input sources among the contaminants in this study.…”

Section: Sources Of Ptm Contamination In the Study Areamentioning

confidence: 99%

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Impact of the Illegal Gold Mining Activities on Pra River of Ghana on the Distribution of Potentially Toxic Metals and Naturally Occurring Radioactive Elements in Agricultural Land Soils

Asare

2021

Chemistry Africa

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Mining sectors in the developing world are located in villages, where farming is the prime source of income. This generates the likelihood of adverse spillovers to agriculturalists through rivalry for main inputs (i.e. land, labor, water, and environmental pollution). To explore this concern, gold mining sites on the Pra River of Ghana and nearby farmland soils were sampled and analyzed to evaluate the levels of potentially toxic metals (PTM) and naturally occurring radioactive elements (NORE) and appraise the potential ecological risk of PTM in soil samples. Cold vapor atomic fluorescence spectrometer was used to analyze the contents of total mercury (THg) while inductively coupled plasma-optical emission spectroscopy was used to determine the total concentrations of Ni, Cr, Pb, Co, Cu, Cd, Zn, and As. Instrumental Neutron Activation Analysis technique was used to detect the NORE concentrations in the soil samples. Geochemical indices were used to help evaluate the environmental risks. Toxic metals and radioactive elements concentrations in mining soil samples varied in the range: THg (0.37-0.59 mg/kg d.w.), As (4.68-19.69 mg/kg d.w.), Pb (6.67-23.02 mg/kg d.w.), Cd (0.103-0.315 mg/kg d.w.), Co (5.06-15.03 mg/kg d.w.), 97 mg/kg d.w.), Cu (15.43-38.05 mg/kg d.w.), mg/kg d.w.), Zn (20.27-97.64 mg/kg d.w.), Al (34,739.33-51,037.07 mg/kg d.w.), Th (77.97-136.10 mg/kg d.w.), and U (< 34.14-102.31 mg/ kg d.w.). The levels of PTM and NORE in farmland soil samples ranged from THg (0.09-0.49 mg/kg d.w.), As(0.45-7.01 mg/ kg d.w.), Pb (3.01-7.01 mg/kg d.w.), Cd (0.01-0.10 mg/kg d.w.), Co (3.12-8.65 mg/kg d.w.), mg/kg d.w.), Cu (8.83-18.07 mg/kg d.w.), Ni (8.12-16.08 mg/kg d.w.), Zn (9.63-42.33 mg/kg d.w.), Al (23,110.71 mg/kg d.w.), Th (< 47.17-57.061 mg/kg d.w.), and U (< 34.14-42.99 mg/kg d.w.). High levels of NORE, THg, and As were detected in some of the farmland sites. Radioactive elements were enriched in all the soil samples detected, while THg, As, Co and Zn were enriched in some of the soil samples analyzed. Mercury exhibited a moderate level of monomial ecological risk in some farmland soil samples while the other PTMs showed low risk in all farmland soil samples. This study has proved that farmland soils contain concentrations of U, Th, THg, and As that can harm the eco-agrosystem and these hazardous elements can be transferred to humans and animals through the food chain process. It is believed that mining activities on the river and phosphate fertilizer applications on farmlands are the major influence.

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Section: Sources Of Ptm Contamination In the Study Areamentioning

confidence: 94%

Section: Sources Of Ptm Contamination In the Study Areamentioning

confidence: 99%

Section: Sources Of Ptm Contamination In the Study Areamentioning

confidence: 99%

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Impact of the Illegal Gold Mining Activities on Pra River of Ghana on the Distribution of Potentially Toxic Metals and Naturally Occurring Radioactive Elements in Agricultural Land Soils

Asare

2021

Chemistry Africa

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“…The importance of the Pollution Load Index (PLI) comes to know the extent of contamination with heavy metals in soils and sediments to take the essential actions to reduce their pollution and preserve the environment from deterioration (Abou Elnwar et al, 2018;Kormoker et al, 2019;Perumal et al, 2021). The results of the heavy metal pollution load index (PLI) values Table ( 4) indicate the fluctuation of values in agricultural soils between (0.617 to 1.418), where 42% of the soil samples irrigated from the valley water were contaminated with heavy metals, because the PLI values are greater than 1.0 (Perumal et al, 2021) due to the relative high concentration of the studied metal elements, especially lead and nickel, which exceeded the baseline. As for the valley sediments, the studied samples were between polluted to non-polluted sediments.…”

Section: Pollution Load Index (Pli)mentioning

confidence: 99%

Qualitative Assessment of Soil and Sediment Pollution with Some Heavy Metals: A Case Study of Duhok Valley in The Kurdistan Region of Iraq

Qaseem

Khalid

Al-Saffawi

2023

SJUOZ

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The current study was conducted on the valley of Duhok and the agricultural lands irrigated from it, where three sites were identified for collecting samples quarterly from soil and sediment using clean plastic bags for the purpose of measuring lead, nickel, cobalt and copper. Pollution load index (PLI), Nemerow pollution index (PIN), Potential Ecological Risk (PER) and Geo-accumulation Index (Igeo) were also calculated according to the internationally approved methods. The results indicated that most of lead, nickel and copper concentrations in soils and sediments exceeded the limits allowed by WHO, reaching annual rates (96.758, 168.746 and 29.88) , (111.25, 219.65 and 48.162) mg.kg-1, respectively. This fluctuation in concentrations was reflected in the values of the studied indicators for both soil and sediment, where 50% and 58% of the studied specimen are of the polluted grade and the remnant are of the non-polluted grade according to the PLI values. So is the case with PIN where 58% of the soil specimen and 41.6% of the sediment samples were of the severe pollution grade, while 25% and 33.3% of the specimen were of the heavy pollution grade and the remnant were slightly pollution grade. The same applies to the results of the PER index values, where 50% and 41.67% of the specimen were from the Medium ecological risk category, and the rest were from the low ecological risk category, likewise for the (Igeo) values, 100% and 96% of the soil and sediment samples were from the Weakly polluted category.

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“…However, changes in the physico-chemical conditions of sediments like pH level, moisture, organic content and granulometric texture determine the bioavailability, mobility, leachability and migration of heavy metals to other parts of the sediments which may impact the overall sediment quality [34]. Other sediment characteristics such as the structure, bulk density, hydraulic conductivity, permeability and porosity also influence the spatial distribution of the metal concentrations in coastal areas [35,36]. The physico-chemical parameters also influence the biogeochemical processes such as the oxidation and reduction of iron and manganese that facilitate the cycle of heavy metals from sediments into the marine ecosystem and vice versa.…”

Section: Physico-chemical Properties Of Sedimentsmentioning

confidence: 99%

Geochemical Assessment of Heavy Metal Contamination in Coastal Sediment Cores from Usukan Beach, Kota Belud, Sabah, Malaysia

Ling

Junaidi

Harun

et al. 2022

J. Phys.: Conf. Ser.

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This article discussed on the status of heavy metals (As, Cr, Cu, Mn, Ni, Pb and Zn) pollution in coastal sediment cores and assess the sediment quality from Usukan Beach, Kota Belud. Several geochemical parameter analyses such as pH, moisture content (MC), organic matter (OM) and granulometric size were performed to identify the physico-chemical properties of sediments that affect the assessment of metal pollution. Heavy metals in the sediment samples were extracted using aqua regia methods and Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES) were employed for determination of heavy metals in extracted sediment solutions. The results show that the coastal sediment changes from acidic to alkaline when heading from inland to seaward direction, with an average pH of 5.6-8.5. The moisture content and organic matter fluctuate from low to moderately high, within the range of 4.9-21.9% and 0.30-6.73%, respectively. The coastal sediments are dominated by a sandy texture near the marine environment and change to sandy loam and sandy clay loam when heading toward the inland. The hierarchical average metal concentration shows Fe>Mn>Ni>Cr>Zn>Cu>Pb>As. Sediment quality assessment is evaluated based on the sediment quality guidelines (SQGs) and from the pollution indices such as geoaccumulation index (Igeo), enrichment factor (EF), contamination factor (CF), modified degree of contamination (mCd) and pollution load index (PLI). The results indicated the sediment has only low degree of contamination by anthropogenic sources and the current status of the study area is safe from pollution.

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Heavy metal pollutants and their spatial distribution in surface sediments from Thondi coast, Palk Bay, South India

Cited by 3 publications

References 55 publications

Impact of the Illegal Gold Mining Activities on Pra River of Ghana on the Distribution of Potentially Toxic Metals and Naturally Occurring Radioactive Elements in Agricultural Land Soils

Impact of the Illegal Gold Mining Activities on Pra River of Ghana on the Distribution of Potentially Toxic Metals and Naturally Occurring Radioactive Elements in Agricultural Land Soils

Qualitative Assessment of Soil and Sediment Pollution with Some Heavy Metals: A Case Study of Duhok Valley in The Kurdistan Region of Iraq

Geochemical Assessment of Heavy Metal Contamination in Coastal Sediment Cores from Usukan Beach, Kota Belud, Sabah, Malaysia

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