scholarly journals Geochemical investigations regarding the variability of metal pollution in the Amvrakikos Bay, Greece.

2018 ◽  
Vol 21 (1) ◽  
pp. 7-13
Keyword(s):  
Heavy Metals ◽  
Water Quality ◽  
Metal Pollution ◽  
Anthropogenic Activities ◽  
Analytical Data ◽  
Anthropogenic Effect ◽  
Biological Value ◽  
Natural Processes ◽  
Marine Zone ◽  
Source Of Pollution

<p>The Amvrakikos Bay is one of the most important ecosystems in the Mediterranean with great environmental, ecological and biological value. However, over the years, water quality has suffered severe degradation and is now one of the most polluted environmental areas in Greece. In the present study, using the analytical data of concentrations of precipitated metal deposits at the bottom of Amvrakikos Gulf, at its three largest lagoons: Logaros, Tsoukalio and Rodia, and by applying the indicators PLI, Igeo and EF, an assessment of the level of pollution of the area was made. The use of these indicators may show the degree of pollution of the area with heavy metals, and reveal the source of pollution i,e. whether the heavy metals are of anthropogenic or of natural processes, assessing simultaneously the degree of anthropogenic effect. Based on the PLI indicator, the marine zone in Menidi and Paliovarka as well as the Rodia and Tsoukalio lagoons are considered to be polluted. According to the Igeo Index, the sampling areas are unchanged to slightly burden by heavy metals. The largest charge is caused by Ni, followed by Mn and Pb. Based on EF, the concentrations of Cr, Mn, Co, Pb and Ni are significantly influenced by the various anthropogenic activities.</p>

scholarly journals Spatial Variation and Source of Dissolved Heavy Metals in the Lancangjiang River, Southwest China

2020 ◽  
Vol 17 (3) ◽  
pp. 732 ◽  
Author(s):  
Bin Liang ◽  
Guilin Han ◽  
Jie Zeng ◽  
Rui Qu ◽  
Man Liu ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Water Quality ◽  
Drainage Basin ◽  
Anthropogenic Activities ◽  
Principal Component ◽  
Mekong River ◽  
Natural Processes ◽  
Dissolved Heavy Metals ◽  
Quality Water ◽  
Potential Risks

Dissolved heavy metals are not only the essential micronutrients, but also the toxic elements for human bodies. To investigate the heavy metal sources and assess the water quality of the Lancangjiang River, dissolved Cr, Ni, Cu, Zn, Mo, and Pb were detected in this study. The results show that dissolved Ni and Mo, Cr and Pb, and Cu and Zn were similarly distributed within the drainage basin. The correlation analysis exhibited that dissolved Ni and Mo had correlation with water parameter, and dissolved Cu was weakly correlated with Ni, indicating that they might be affected by natural processes. The principal component analysis explained 68.342% of the total variance for three principal components, of which dissolved Ni, Mo, and Cu were controlled by natural inputs; dissolved Cu and Cr were affected by anthropogenic activities; and dissolved Zn was influenced by agricultural activities in the downstream. The water quality showed that the water in upstream was worse than in midstream and downstream, and the whole drainage basin had water of excellent quality. Water within the drainage basin poses no risks to human bodies via daily diets and dermal routes. Dissolved Zn, Cu, and Mo occupied the major proportion of heavy metals transporting into the Mekong River. The agricultural inputs of dissolved Zn might pose potential risks to the Mekong River.

scholarly journals An Overview of River Side Pollutants and their Effects on Physico-Chemical Changes in Water Quality of River Halda, Bangladesh

2020 ◽  
Vol 32 (4) ◽  
pp. 827-834
Author(s):  
Muhammad Towhid Moula ◽  
Ranjit K. Nath ◽  
Mh. Mosfeka Chowdhury ◽  
Md. Abu Bakar Siddique
Keyword(s):  
Heavy Metals ◽  
Water Quality ◽  
Anthropogenic Activities ◽  
Oxygen Demand ◽  
Aquatic Organisms ◽  
Total Suspended Solid ◽  
Total Solid ◽  
Suspended Solid ◽  
Total Alkalinity ◽  
Physico Chemical

Halda is an important river of Bangladesh, is now polluted in different ways through industrial, agricultural, domestic and sewage disposal. Increased anthropogenic activities have increased the potential pollution of the river and excessive pollutants may be toxic to humans and aquatic fauna. Presence of heavy metals in the river water causes perilous impact on the aquatic organisms. Hence, regular monitoring of pollution levels in the river is indispensable. In this study, we discuss about physico-chemical assessments of water quality parameters viz. pH, dissolve oxygen (DO), biochemical oxygen demand (BOD), chemical oxygen demand (COD), total solid (TS), total suspended solid (TSS), total dissolved substance (TDS), total alkalinity, turbidity, salinity, electrical conductivity (EC), hardness, chloride and heavy metals in the water of Halda river during rainy and winter seasons, at different points; sources of pollutants in water and their effects given starting from the early research until the current research.

scholarly journals An In-Depth Analysis of Water Quality Using GIS and Heavy Metal Pollution Index near a Gold Mining Area, Qorveh, Iran

2021 ◽  
Author(s):  
Mahsa Jahangiri-rad ◽  
Mohsen Shariati ◽  
Mahdieh Yaaghoubi ◽  
Ali Haghmoradkhani ◽  
Abbas Akbarzadeh
Keyword(s):  
Heavy Metals ◽  
Water Quality ◽  
Heavy Metal ◽  
Metal Pollution ◽  
Heavy Metal Pollution ◽  
Gold Mining ◽  
Pollution Index ◽  
Mining Activities ◽  
Heavy Metal Pollution Index ◽  
Metal Pollution Index

Introduction: Inappropriate management of mining activities may bring about water pollution and pose a heavy complication on aquatic ecosystem and humans. The study aimed to evaluate the effect of Qorveh gold mining activities on the quality of nearby groundwater. Materials and Methods: The concentration of seven eco-toxic metals along with some general hydrochemical parameters were investigated for 27 sampling stations in the study area using Atomic Absorption Spectrometry (AAS) and conventional hydrochemical methods. The analysis results were further applied to compute pollution indices, namely heavy metal pollution index (HPI) for irrigation purposes. Results: The main elements were within the World Health Organization (WHO) and Iranian National Water Standards (INWS) for irrigation water quality, except for NH4+ in some sampling points. The concentration of heavy metals followed the order Cu > Zn > Pb > Hg > Cd > As. The contents of Hg, As, Cd, and Cu in most sites were higher than the recommended values. Except for two stations, the value of HPI based on the mean concentration was found to be far beyond the critical pollution index value of 100, suggesting that the area is highly polluted with some heavy metals. Conclusion: Elevated concentration of trace elements found in groundwater of this area represented the release of harmful elements from gold mining activities on surrounding environment.

scholarly journals ANALYSIS OF METAL Pb AND Cu CONTENT IN SEAGRASS (Sargassum sp) IN BAYUR BAYS OF WEST SUMATERA PROVINCE

2021 ◽  
Vol 4 (1) ◽  
pp. 36-43
Author(s):  
Yuliza Fitri ◽  
Yusni Ikhwan Siregar ◽  
Bintal Amin
Keyword(s):  
Water Quality ◽  
Heavy Metal ◽  
Metal Pollution ◽  
Heavy Metal Pollution ◽  
Anthropogenic Activities ◽  
Survey Method ◽  
Cu Content ◽  
Port Area ◽  
Sea Transportation ◽  
West Sumatra

Located in Teluk Bayur bay the port is of the five biggest and busiest ports in Indonesia. High sea transportation activities and anthropogenic activities may lead to heavy metal pollution. The purpose of this study was to determine the concentration of Pb and Cu metals, in seagrass (Sargassum sp.) and to analyze the feasibility of consuming Sargassum sp. The method used in this study is a survey method, by analyzing heavy metal at Laboratory Pekerjaan Umum of Riau Province. The water quality temperatures 30-31oC, and salinity of 30-31 ppt, appeared curred velocity 0.06-0.08 m/sec, water transparency 100% with a depth of ± 1 m and pH 7. Pb concentrations the highest is 2.9367 μg/g at stations close to the port and the lowest is 2.2506 μg/g at stations close to tourist areas, and the concentration of Cu metal shows the highest 3.3850 μg/g at stations close to community settlements, and the lowest is 2.7772 μg/g near the port area of ​​Teluk Bayur. Based on the PTWI value, Sargassum sp. those originating from the waters of Teluk Bayur, West Sumatra, are still safe for consumption. Based on the Anova Pb and Cu tests in Sargassum sp. do not different (p> 0.05).

scholarly journals Investigation of water quality from Damanga estuary through the water quality indexing Gujarat

2021 ◽  
Vol 9 (2) ◽  
Author(s):  
Shefaliben Sureshbhai Patel ◽  
Susmita Sahoo
Keyword(s):  
Heavy Metals ◽  
Water Quality ◽  
Anthropogenic Activities ◽  
River Estuary ◽  
Poor Quality ◽  
Quality Parameters ◽  
Quality Data ◽  
Water Quality Data ◽  
Investigation Area

The seasonal investigation about the water quality from Damanganga river estuary on two habitats downstream and upstream was carried out from January to December 2019 containing three major seasons: winter, summer and monsoon. For this monitoring activity total 29 parameters (24 physico-chemical parameters and 5 heavy metals) were analyzed. Multivariate analyses suggested inter dependency among these studied parameters. Water Quality Index is computed based on the major fluctuated and affected parameters. The calculated values of WQI for all three seasons ranged from 122.84 to 173.82 which suggested poor water quality of the water body. WQI values of the investigation area proposed that the estuarine water quality is deteriorated due to high value of presented heavy metals (Aluminum, Iron, Manganese, Boron and Zinc), Chloride, Ammonium and Sulfate in water sample. In this case, the downstream station is having accessional pollutant contaminations while the upstream station is having diminutive pollutant contaminants. Temporally, the dominant frailty found during the winter followed by summer and monsoon. This study field exhibited poor quality of water; the reason behind this might be the impressive surrounding industrial zone as well as other anthropogenic activities. There is quite normal probability distribution expressed by the represented water quality data at the both habitats. The Bray-Curtis cluster analysis shows different percentage similarity level between the water quality parameters.  

scholarly journals Spatial Variations in Groundwater Quality Around Dumpsite in Igando

2015 ◽  
Vol 6 (1) ◽  
pp. 179-186
Author(s):  
Akoteyon ◽  
S Isaiah
Keyword(s):  
Heavy Metals ◽  
Water Quality ◽  
Drinking Water ◽  
Groundwater Quality ◽  
Anthropogenic Activities ◽  
Dry Season ◽  
Spatial Variations ◽  
T Test ◽  
Drinking Water Quality ◽  
Wet Season

Water samples collected from fifteen hand dug wells in November (dry season), 2011 and July (Wet season), 2012 using random sampling technique. In situ parameters were measured for pH, electrical conductivity, total dissolved solids using portable meters. Heavy metals were analyzed for; Fe, Cu, Zn, Cd, Pb, and Cr using Atomic Absorption Spectrophotometer (AAS). The study aimed at examining the spatial variations in groundwater quality around dumpsite in Igando using paired sample T-test statistical technique. The result shows that the measured pH values were below the minimum WHO standard for drinking water quality in wet and dry seasons in about73.3% and 26.7% respectively. Also, approximately, 13.3% of EC, and 6.7% exceeded the prescribed standard limit of WHO in dry and wet seasons respectively. Concentration of Fe exceeded drinking water quality in all the sampling locations during wet season and only about 46.7% in dry season. Pb, Zn, and Cu exceeded WHO limit in about 86.7%, 80%, and 26.7% respectively in dry season. Concentration of Pb, Cd , Cu and Cr were under detection limit in all the locations except at locations G2 for Cu in wet season. The paired samples statistics and correlation revealed that the mean values of all the parameters were higher in dry season with the exception of Fe. No significant correlations exist among the paramet er for both seasons at p<0.05. The paired T-test show significant seasonal variations among four heavy metals including Fe, Cd, Pb and Zn.The study concluded that, samples in dry season are of low quality compared to wet. The study recommends public enlightenment on solid waste disposal, controlled anthropogenic activities, and treatment /recycling of waste to prevent heavy metal from leaching unto the sub-surface.DOI: http://dx.doi.org/10.3329/jesnr.v6i1.22063 J. Environ. Sci. & Natural Resources, 6(1): 179-186 2013

scholarly journals Bioindication of Heavy Metals in a Waterfall Outflow Using a Bryophyte Community

2021 ◽  
Author(s):  
Narin Printarakul ◽  
Weeradej Meeinkuirt
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
National Park ◽  
Metal Accumulation ◽  
Anthropogenic Activities ◽  
Heavy Metal Stress ◽  
Enrichment Factors ◽  
Heavy Metal Accumulation ◽  
Natural Processes ◽  
Aquatic Bryophytes

Abstract Huay Pah Lahd stream in Doi Suthep-Pui National Park, Thailand, is potentially vulnerable to nearby anthropogenic activities. In this study, we determined heavy metal accumulation in bryophyte tissue and their growth substrates. Enrichment factors (EFs) of heavy metals were employed to monitor concentrations in bryophyte tissue. Of eight bryophyte taxa investigated, Scopelophila cataractae showed the highest capacity to accumulate metals in tissue, particularly Fe, Zn, Cd and Cu in protonemata (8,026.7, 1,187.2, 16.9 and 530.1 mg kg-1, respectively). Furthermore, the endangered and rare bryophyte taxa S. cataractae and Porella acutifolia were found intermingled with other urban and common aquatic bryophytes. These taxa might be considered sensitive warning organisms for heavy metal stress in stream ecosystems induced by environmental pollution. Because EFs of all heavy metals were < 2, this suggests that natural processes are the key source of heavy metals; furthermore, the environment of this National Park was identified as being heathy, and an important ecosystem buffer and biodiversity haven.

INVESTIGATION OF WATER QUALITY FROM DAMANGANGA ESTUARY THROUGH THE WATER QUALITY INDEXING, GUJARAT

2021 ◽  
Author(s):  
Shefaliben Sureshbhai Patel ◽  
Susmita Sahoo
Keyword(s):  
Heavy Metals ◽  
Water Quality ◽  
Anthropogenic Activities ◽  
River Estuary ◽  
Poor Quality ◽  
Quality Parameters ◽  
Quality Data ◽  
Water Quality Data ◽  
Investigation Area

The seasonal investigation about the water quality from Damanganga river estuary on two habitats downstream and upstream was carried out from January to December 2019 containing three major seasons: winter, summer and monsoon. For this monitoring activity total 29 parameters (24 physico-chemical parameters and 5 heavy metals) were analyzed. Multivariate analyses suggested inter dependency among these studied parameters. Water Quality Index is computed based on the major fluctuated and affected parameters. The calculated values of WQI for all three seasons ranged from 122.84 to 173.82 which suggested poor water quality of the water body. WQI values of the investigation area proposed that the estuarine water quality is deteriorated due to high value of presented heavy metals (Aluminum, Iron, Manganese, Boron and Zinc), Chloride, Ammonium and Sulfate in water sample. In this case, the downstream station is having accessional pollutant contaminations while the upstream station is having diminutive pollutant contaminants. Temporally, the dominant frailty found during the winter followed by summer and monsoon. This study field exhibited poor quality of water; the reason behind this might be the impressive surrounding industrial zone as well as other anthropogenic activities. There is quite normal probability distribution expressed by the represented water quality data at the both habitats. The Bray-Curtis cluster analysis shows different percentage similarity level between the water quality parameters.  

scholarly journals Bioremediation Options for Heavy Metal Pollution

2019 ◽  
Vol 9 (24) ◽  
pp. 191203 ◽  
Author(s):  
Meena Kapahi ◽  
Sarita Sachdeva
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Metal Pollution ◽  
Heavy Metal Pollution ◽  
Anthropogenic Activities ◽  
Environmental Pollutants ◽  
Human Beings ◽  
Heavy Metal Leaching ◽  
Advantages And Disadvantages ◽  
Financial Interests

Background. Rapid industrialization and anthropogenic activities such as the unmanaged use of agro-chemicals, fossil fuel burning and dumping of sewage sludge have caused soils and waterways to be severely contaminated with heavy metals. Heavy metals are non-biodegradable and persist in the environment. Hence, remediation is required to avoid heavy metal leaching or mobilization into environmental segments and to facilitate their extraction. Objectives. The present work briefly outlines the environmental occurrence of heavy metals and strategies for using microorganisms for bioremediation processes as reported in the scientific literature. Methods. Databases were searched from different libraries, including Google Scholar, Medline and Scopus. Observations across studies were then compared with the standards for discharge of environmental pollutants. Discussion. Bioremediation employs microorganisms for removing heavy metals. Microorganisms have adopted different mechanisms for bioremediation. These mechanisms are unique in their specific requirements, advantages, and disadvantages, the success of which depends chiefly upon the kind of organisms and the contaminants involved in the process. Conclusions. Heavy metal pollution creates environmental stress for human beings, plants, animals and other organisms. A complete understanding of the process and various alternatives for remediation at different steps is needed to ensure effective and economic processes. Competing interests. The authors declare no competing financial interests.

scholarly journals Geochemical Parameters of Water Quality of Karra River, Hetauda Industrial Area, Central Nepal

2015 ◽  
Vol 20 (2) ◽  
pp. 31-36 ◽  
Author(s):  
Sandhana Pradhanang Kayastha
Keyword(s):  
Water Quality ◽  
Water Samples ◽  
Anthropogenic Activities ◽  
Industrial Area ◽  
Carbonate Weathering ◽  
Natural Processes ◽  
Central Nepal ◽  
Geochemical Parameters ◽  
Direct Discharge

Water samples of Karra river from Hetauda industrial area were collected during pre monsoon (May 2012) to assess water chemistry (Ca2+, Na+, K+, HCO3-, NO3-, SO42-, Cl-, F- and H4SiO4) and evaluate influence of natural processes and anthropogenic activities viz. industrial and agricultural inputs. The pollution was more severe near the industrial stretches due to direct discharge of the treated and untreated effluents from industries. Carbonate contribution was noted ~36.2 % from carbonate weathering and ~ 63.8 % from silicate weathering.Journal of Institute of Science and Technology, 2015, 20(2): 31-36

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