scholarly journals Levels of Platinum Group Metals in Selected Species (Sarotherodon melanotheron,Chonophorus lateristriga,Macrobrachium vollenhoveniiandCrassostrea tulipa) in Some Estuaries and Lagoons Along the Coast of Ghana

2010 ◽  
Vol 10 ◽  
pp. 1971-1987 ◽  
Author(s):  
D. K. Essumang ◽  
C. K. Adokoh ◽  
L. Boamponsem
Keyword(s):  
Contamination Factor ◽  
Pollution Index ◽  
Dry Weight ◽  
Platinum Group Metals ◽  
Anthropogenic Sources ◽  
Pollution Indices ◽  
Contributing Factors ◽  
Coastal Belt ◽  
Platinum Group ◽  
Sarotherodon Melanotheron

The use of some biota as bioindicators of heavy metal pollution has been demonstrated as particularly adequate due to their capacity of bioconcentration. This study evaluated the levels of platinum group metals (PGMs) in some selected species along the coastal belt of Ghana, using the neutron activation analysis (NAA) method. The result was processed to evaluate pollution indices in order to map the distribution of the metals in those species in the lagoons and estuaries along the costal belt of Ghana. The analysis showed significant levels of all PGMs in blackchin tilapia (Sarotherodon melanotheronCichlidae), brown goby (Chonophorus lateristrigaGobiidae), shrimp (Macrobrachium vollenhoveniiPalaemonidae), and mangrove oysters (Crassostrea tulipaOstreidae) in the lagoons and river Pra estuary. However, the oysters showed an elevated mean concentration of 0.13 μ/g (dry weight) Pd. From the pollution indices, most of the sampling sites registered mean contamination factor (CF) values between 1.20 and 3.00 for Pt, Pd, and Rh. The pollution load index (PLI) conducted also gave an average pollution index between 0.79 and 2.37, indicating progressive contamination levels. The results revealed that anthropogenic sources, industrial and hospital effluent, etc., together with vehicular emissions, could be the contributing factors to the deposition of PGMs along the Ghanaian coast.

scholarly journals Assessment of the metal pollution in surface sediments of coastal Tasaul Lake (Romania)

2020 ◽  
Vol 192 (12) ◽  
Author(s):  
Dan Vasiliu ◽  
Andra Bucse ◽  
Naliana Lupascu ◽  
Bogdan Ispas ◽  
Catalin Gheablau ◽  
...  
Keyword(s):  
Metal Contamination ◽  
Surface Sediments ◽  
Heavy Metal Contamination ◽  
Contamination Factor ◽  
Distribution Patterns ◽  
Agricultural Runoff ◽  
Pollution Load Index ◽  
Anthropogenic Sources ◽  
Pollution Indices ◽  
Metal Concentrations

AbstractForty-three surface sediment samples were collected in September 2019 from Tasaul Lake (Black Sea coast, Romania) to examine the metal distribution patterns, assess the level of metal contamination, and identify the pollutant sources. The determined mean metal concentrations were as follows: Al 49,772 mg/kg, Zn 84.40 mg/kg, Cr 83.70 mg/kg, V 76.45 mg/kg, Ni 42.53 mg/kg, Cu 34.27 mg/kg, Pb 26.30 mg/kg, As 12.49 mg/kg, and Hg 0.06 mg/kg. The metals in the surface sediments of Tasaul Lake displayed moderate spatial variation, with higher metal concentrations mainly occurring in the south and southeast (As, Pb, and Hg), southwest (Cu and Zn), and west of the lake (Cr, Ni, and V). Heavy metal contamination in sediments is assessed using pollution indices such as enrichment factor, contamination factor, and pollution load index. The highest CFs and EFs were determined for As (moderate to high pollution), followed by Pb (low to moderate pollution). The Cu, Zn, and Hg pollution indices showed values corresponding to low pollution levels, while Ni, Cr, and V presented the lowest indices, suggesting unpolluted sediments. Multivariate statistical analyses were performed to identify the origin of the analyzed heavy metals. Cr was predominantly sourced from lithogenic components, Ni and V originated from both natural and anthropogenic sources, and As, Cu, Zn, Pb, and Hg showed mainly anthropogenic sources such as agricultural runoff, domestic and industrial wastewater discharges, and quarrying activities.

scholarly journals Heavy Metal Accumulation in Cockscomb (Celosia Argentea Linn) Grown in Soil Amended With Chicken Manure

2021 ◽  
Author(s):  
Oladele Abdulahi Oguntade ◽  
Nosiru Monday Yisa ◽  
Solomon Oladimeji Olagunju ◽  
Olufemi Sunday Sosanya ◽  
Abiodun Oladipupo Joda ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Metal Pollution ◽  
Contamination Factor ◽  
Pollution Index ◽  
Pollution Load Index ◽  
Heavy Metal Accumulation ◽  
Chicken Manure ◽  
Growth And Yield ◽  
Pollution Indices ◽  
Celosia Argentea

Abstract Heavy metals such as Cadmium (Cd), Copper (Cu) and Manganese (Mn) in chicken manure can contaminate soil and bioaccumulate in edible tissues of plant to cause food chain contamination. This study investigated the influence of chicken manure on heavy metal load of soil and accumulation in tissues of Celosia argentea. Air-dried chicken manure from battery cages (conventional chicken manure-CCM) and free range birds (local chicken manure-LCM) were used for the pot culture. Chicken manure was applied as amendment at the rate of 0, 4, 6, 8 and 10 t ha-1 in 5 kg soil. Treatments were replicated trice in a Completely Randomized Design. Results showed that soil metal pollution increased with rates of amendment. Metal pollution indices; contamination factor, degree of contamination, elemental pollution index, pollution load index and total contamination factor were significantly (p < 0.001) higher in soil amended with CCM than LCM. Bioaccumulation coefficients (BAC), bioaccumulation factor (BAF) and transfer factor (TF) of metals were higher in tissues of celosia grown with CCM than LCM. Furthermore, above 4 t ha-1, growth and yield were not significantly influenced by amendment rates. Mobility of metals from soil to tissues of celosia increased in the order Cu > Mn > Cd. Chicken manure above 4 t ha-1 potent health risks of Cu exposure to consumers of celosia.

scholarly journals Estimation of pollution indices and hazard evaluation from trace elements concentration in coastal sediments of Kerala, Southwest Coast of India

2020 ◽  
Vol 44 (1) ◽  
Author(s):  
V. Vineethkumar ◽  
V. V. Sayooj ◽  
K. P. Shimod ◽  
V. Prakash
Keyword(s):  
Trace Elements ◽  
Atmospheric Deposition ◽  
Physicochemical Parameters ◽  
Coastal Sediments ◽  
Anthropogenic Sources ◽  
Hazard Evaluation ◽  
Pollution Indices ◽  
Environmental Matrices ◽  
The People ◽  
Coastal Belt

Abstract Background The environment is always subjected to exposure from different natural and anthropogenic sources of trace elements. The excessive intake of these trace elements may become toxic and cause health disorders to the people when the concentration exceeds certain threshold limits. The measurement of trace elements concentration in general and toxic trace elements concentration in particular is important for the assessment and prediction of risk to the environment and public. Distribution of trace elements in various environmental matrices depends on the nature of the element itself and the site-specific characteristics such as type of the matrices and its physicochemical parameters. In view of these aspects, an attempt is made to assess the concentration of trace elements and pollution indices in the sediment samples collected from the coastal belt of Kerala and possible conclusions were drawn. Results The results of pollution indices clearly indicate the moderate level of trace elements contamination in the coastal belts of Kerala. Significant correlations were observed between the concentration of trace elements and physicochemical parameters of the sediments. Conclusion Most of the trace elements enrichment in the coastal belt is due the crustal materials or natural weathering process and atmospheric deposition. The investigation revealed the sources of most of the elements present in the coastal belt of Kerala are lithogenic such as weathering and atmospheric deposition.

scholarly journals Quality of Peri-Urban Soil Developed from Ore-Bearing Carbonates: Heavy Metal Levels and Source Apportionment Assessed Using Pollution Indices

Minerals ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 1140
Author(s):  
Katarzyna Sutkowska ◽  
Leslaw Teper ◽  
Tomasz Czech ◽  
Tomasz Hulok ◽  
Michał Olszak ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Contamination Factor ◽  
Anthropogenic Pollution ◽  
Pollution Load Index ◽  
Total Carbon ◽  
Anthropogenic Sources ◽  
Pollution Indices ◽  
Geochemical Background ◽  
Ore Bodies ◽  
Metal Levels

Pollution indices are used to assess the influence of the bedrock as a natural source of heavy-metal (HM), and anthropogenic pollution from ore mining in soils developed from ore-bearing carbonates. The research was conducted in two areas differing in geological setting and type of land use in the Upper Silesia Industrial Region, Southern Poland. Physical properties such as pH, total sulfur, total carbon and total organic carbon values, as well as total Zn, Pb, and Cd contents (ICP-OES) for 39 topsoil samples were measured. Contamination factor (Cf), degree of contamination (Cdeg), pollution load index (PLI) and geoaccumulation index (Igeo), were used to determine the deterioration of topsoil due to HM pollution. The HM content exceeded geochemical background levels by 2.5–18.1 times. Very high to moderate topsoil contamination was determined. In a shallow historical mining zone, the relative influence of particular HM was found to be in the order of Pb > Cd > Zn and, in a deep mining zone, Zn > Cd > Pb. In the topsoil developed over shallow ore bodies, the HM content was mainly (60%) due to naturally occurring HM. In the area of deeply buried ore bodies, 90% of the HM load was related to anthropogenic sources. Zn, Pb and Cd vertical distributions and the patterns of topsoil pollution differ in terms of types of mined ores, mining methods and times elapsed since mining ceased. Pollution indices are an efficient tool for distinguishing soil anthropogenic pollution and geogenic contamination.

scholarly journals Environmental Pollution Indices and Multivariate Modeling Approaches for Assessing the Potentially Harmful Elements in Bottom Sediments of Qaroun Lake, Egypt

2021 ◽  
Vol 9 (12) ◽  
pp. 1443
Author(s):  
Ali H. Saleh ◽  
Mohamed Gad ◽  
Moataz M. Khalifa ◽  
Salah Elsayed ◽  
Farahat S. Moghanm ◽  
...  
Keyword(s):  
Environmental Pollution ◽  
Ecological Risk ◽  
Risk Index ◽  
Contamination Factor ◽  
Partial Least Square ◽  
Anthropogenic Sources ◽  
Pollution Indices ◽  
Degree Of Contamination ◽  
Untreated Wastewater ◽  
Very High

This research intends to offer a scientific foundation for environmental monitoring and early warning which will aid in the environmental protection management of Qaroun Lake. Qaroun Lake is increasingly influenced by untreated wastewater discharge from many anthropogenic activities, making it vulnerable to pollution. For that, six environmental pollution indices, namely contamination factor (Cf), enrichment factor (EF), geo-accumulation index (Igeo), degree of contamination (Dc), pollution load index (PLI), and potential ecological risk index (RI), were utilized to assess the bottom sediment and to determine the different geo-environmental variables affecting the lake system. Cluster analysis (CA), and principal component analysis (PCA) were used to explore the potential pollution sources of heavy metal. Moreover, the efficiency of partial least-square regression (PLSR) and multiple linear regression (MLR) were tested to assess the Dc, PLI, and RI depending on the selected elements. The sediment samples were carefully collected from 16 locations of Qaroun Lake in two investigated years in 2018 and 2019. Total concentrations of Al, As, Ba, Cd, Co, Cr, Cu, Fe, Ga, Hf, Li, Mg, Mn, Mo, Ni, P, Pb, Sb, Se, Zn, and Zr were quantified using inductively coupled plasma mass spectra (ICP-MS). According to the Cf, EF, and Igeo results, As, Cd, Ga, Hf, P, Sb, Se, and Zr demonstrated significant enrichment in sediment and were derived from anthropogenic sources. According to Dc results, all collected samples were categorized under a very high degree of contamination. Further, the results of RI showed that the lake is at very high ecological risk. Meanwhile, the PLI data indicated 59% of lake was polluted and 41% had PLI < 1. The PLSR and MLR models based on studied elements presented the highest efficiency as alternative approaches to assess the Dc, PLI, and RI of sediments. For examples, the validation (Val.) models presented the best performance of these indices, with R2val = 0.948–0.989 and with model accuracy ACCv = 0.984–0.999 for PLSR, and with R2val = 0.760–0.979 and with ACCv = 0.867–0.984 for MLR. Both models for Dc, PLI, and RI showed that there was no clear overfitting or underfitting between measuring, calibrating, and validating datasets. Finally, the combinations of Cf, EF, Igeo, PLI, Dc, RI, CA, PCA, PLSR, and MLR approaches represent valuable and applicable methods for assessing the risk of potentially harmful elemental contamination in the sediment of Qaroun Lake.

Distribution and Contamination Status of Heavy Metals in the Surface Sediments along Western Coast of Bali Strait, Banyuwangi

2018 ◽  
Vol 1 (2) ◽  
Author(s):  
Defri Yona ◽  
Syarifah Hikmah Julinda Sari ◽  
Anedathama Kretarta ◽  
Citra Ravena Putri Effendy ◽  
Misba Nur Aini ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Metal Pollution ◽  
Contamination Factor ◽  
Pollution Index ◽  
Western Coast ◽  
Sampling Locations ◽  
Accumulation Index ◽  
Geo Accumulation Index ◽  
Geo Accumulation

This study attempted to analyze the distribution and contamination status of heavy metals (Cu, Fe and Zn) along western coast of Bali Strait in Banyuwangi, East Java. Bali Strait is one of the many straits in Indonesia with high fisheries activities that could potentially contributed to high heavy metal pollution. There were five sampling areas from the north to south: Pantai Watu Dodol, Pantai Kalipuro, Ketapang Port, Pantai Boom and Muncar as the fish landing area. Heavy metal pollution in these locations comes from many different activities such as tourism, fish capture and fish industry and also domestic activities. Contamination factor (CF), geo-accumulation index (Igeo) and enrichment factor (EF) of each heavy metal were calculated to obtain contamination status of the research area. The concentrations of Fe were observed the highest (1.5-129.9 mg/kg) followed by Zn (13.2-23.5 mg/kg) and Cu (2.2-7.8 mg/kg). The distribution of Cu, Fe and Zn showed variability among the sampling locations in which high concentrations of Cu and Zn were higher in Ketapang Port, whereas high concentration of Fe was high in almost all sampling locations. According to the pollution index, contamination factors of Cu, Fe and Zn were low (CF < 1 and Igeo < 1). However, high index of EF (> 50) showed high influence of the anthropogenic activities to the contribution of the metals to the environment. This could also because of the high background value used in the calculation of the index due to the difficulties in finding background value from the sampling areas.Keywords: heavy metals, pollution index, contamination factor, geo-accumulation index, Bali Strait

scholarly journals Janus Nanocages of Platinum‐Group Metals and Their Use as Effective Dual‐Electrocatalysts

2021 ◽  
Vol 133 (18) ◽  
pp. 10472-10480
Author(s):  
Jiawei Zhu ◽  
Lang Xu ◽  
Zhiheng Lyu ◽  
Minghao Xie ◽  
Ruhui Chen ◽  
...  
Keyword(s):  
Platinum Group Metals ◽  
Platinum Group
Sign in / Sign up

Export Citation Format

Share Document