scholarly journals Spatial variability of heavy metal concentration in urban pavement joints – A case study

2020 ◽  
Author(s):  
Collin J. Weber ◽  
Alexander Santowski ◽  
Peter Chifflard
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Organic Matter ◽  
Inner City ◽  
Spatial Variability ◽  
Urban Areas ◽  
Heavy Metal Concentration ◽  
Pollution Indices ◽  
Geochemical Background ◽  
Sampling Points

Abstract. Heavy metals are known to be among the one of the major environmental pollutants especially in urban areas and, as is generally known, can pose environmental risks as well as direct risks to humans. This study deals with the spatial distribution of heavy metals in different pavement joints in the inner-city area of Marburg (Hesse, Germany). Pavement joints, defined as the joint between paving stones and filled with different materials, have so far hardly been considered as anthropogenic urban soils. Nevertheless, they have an important role as possible sites of infiltration for surface runoff accumulation areas, and are therefore a key feature of urban water regimes. In order to investigate the spatial variability of heavy metals in pavement joints, a geospatial sampling approach was carried out on six inner-city sampling sites, followed by heavy metals analyses via ICP-MS, and additional pH and organic matter analyses. To obtain a risk assessment of heavy metal pollution, different pollution indices were calculated based on regional geochemical background values. Pavement joints examined consist mainly of basaltic gravel, sands, organic material and anthropogenic artefacts (e.g., glass, plastics) with an average joint size of 0.89 cm and a vertical depth of 2–10 cm. In general, the pavement joint material shows high organic matter loads (average 11.0 % by mass) and neutral to alkaline pH values. Besides high Al and Fe content, the heavy metals Cr, Ni, Cd and Pb are mainly responsible for the contamination of pavement joints. From the Geo-accumulation Index, the pollution in pavement joints regarding those metals, can be considered as moderate to high. Deterioration of soil quality was reported according to the Pollution Load Index (PLI) for 82.8 % of all sampling points, as well as a very strong potential Ecological Risk (RI) for 27.6 % of the points. The identified spatial pattern of maximum heavy metal loads in pavement joints, could not be attributed solely to traffic emissions, as commonly reported for urban areas. Higher concentrations were detected at runoff accumulation areas (e.g., drainage gutters), and at the lowest sampling points with high drainage accumulation tendencies. Additional Spearman correlation analyses show clear positive correlation between runoff accumulation value and PLI or RI index (rsp = 0.83; p 

scholarly journals Spatial variability in heavy metal concentration in urban pavement joints – a case study

SOIL ◽  
2021 ◽  
Vol 7 (1) ◽  
pp. 15-31
Author(s):  
Collin J. Weber ◽  
Alexander Santowski ◽  
Peter Chifflard
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Organic Matter ◽  
Inner City ◽  
Spatial Variability ◽  
Urban Areas ◽  
Urban Environments ◽  
Spearman Correlation ◽  
Alkaline Ph ◽  
Run Off

Abstract. Heavy metals are known to be among one of the major environmental pollutants, especially in urban areas, and, as generally known, can pose environmental risks and direct risks to humans. This study deals with the spatial distribution of heavy metals in different pavement joints in the inner city area of Marburg (Hesse, Germany). Pavement joints, defined as the joint between paving stones and filled with different materials, have so far hardly been considered as anthropogenic materials and potential pollution sources in urban areas. Nevertheless, they have an important role as possible sites of infiltration for surface run-off accumulation areas and are therefore a key feature of urban water regimes. In order to investigate the spatial variability in heavy metals in pavement joints, a geospatial sampling approach was carried out on six inner city sampling sites, followed by heavy metal analyses via inductively coupled plasma–mass spectrometry (ICP–MS) and additional pH and organic matter analyses. A first risk assessment of heavy metal pollution from pavement joints was performed. Pavement joints examined consist mainly of basaltic gravel, sands, organic material and anthropogenic artefacts (e.g. glass and plastics), with an average joint size of 0.89 cm and a vertical depth of 2–10 cm. In general, the pavement joint material shows high organic matter loads (average 11.0 % by mass) and neutral to alkaline pH values. Besides high Al and Fe content, the heavy metals Cr, Ni, Cd and Pb are mainly responsible for the contamination of pavement joints. The identified spatial pattern of maximum heavy metal loads in pavement joints could not be attributed solely to traffic emissions, as commonly reported for urban areas. Higher concentrations were detected at run-off accumulation areas (e.g. drainage gutters) and at the lowest sampling points with high drainage accumulation tendencies. Additional Spearman correlation analyses show a clear positive correlation between the run-off accumulation value and calculated exposure factor (ExF; Spearman correlation coefficients (rSP) – 0.80; p<0.00). Further correlation analyses revealed different accumulation and mobility tendencies of heavy metals in pavement joints. Based on sorption processes with humic substances and an overall alkaline pH milieu, especially Cu, Cd and Pb showed a low potential mobility and strong adsorption tendency, which could lead to an accumulation and fixation of heavy metals in pavement joints. The presence of heavy metals in pavement joints poses a direct risk for urban environments and may also affect environments out of urban areas if drainage transports accumulated heavy metals. Finally, we encourage further research to give more attention to this special field of urban anthropogenic materials and potential risks for urban environments. Overall urban geochemical background values, and the consideration of run-off-related transport processes on pavements, are needed to develop effective management strategies of urban pavement soil pollution.

scholarly journals Assessment of Heavy Metal Pollution Indices in Surface Sediments From Southwestern Bay of Bengal, India

2021 ◽  
Author(s):  
Harikrishnan Sadanandan ◽  
Senthil Nathan Dharmalingam ◽  
Nitin Agarwal ◽  
Sridharan Mouttoucomarassamy ◽  
Anbuselvan Nagarajan
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Organic Matter ◽  
Bay Of Bengal ◽  
Marine Pollution ◽  
Contamination Factor ◽  
Pollution Indices ◽  
Southwestern Part ◽  
Multivariate Statistical ◽  
Shelf Sediments

Abstract The study of heavy metal distribution in the shelf sediments of Southwestern part of Bay of Bengal is essential in determining the distribution pattern and to understand the consequences of marine pollution beside the coastal environment. The south eastern coastal areas of India are affected by several disturbances and contamination associated with accelerated industrialization and urbanization. Twenty-nine surface sediment samples were collected from shelf region of Southwestern part of Bay of Bengal and analyzed for sediment texture, organic matter and heavy metals. Pollution indices such as Enrichment Factor (EF), Geoaccumulation Index (Igeo), Contamination Factor (CF) as well as multivariate statistical analyses were used to recognize the pollution pattern and probable sources for metal contamination. Comparatively, the concentration of heavy metals in the study area is closely associated with finer fractions and organic matter. The results demonstrate that Cu, Co, Mn, Pb, Zn, Cr and Ni in most of the sites are extremely contaminated in terms of Igeo. The computed values of CF indicate very high contamination of the metals like Pb, Zn and Cr followed by uncontamination to moderate contamination of Cu, Mn, Ni, Co. Based on factor analysis, domestic and industrial activities from adjacent land areas are found to be the major contributors of heavy metals in the shelf sediments.

scholarly journals METAIS PESADOS E QUALIDADE DA AGUA DO RIO SÃO FRANCISCO NO SEGMENTO ENTRE TRÊS MARIAS E PIRAPORA - MG: ÍNDICE DE CONTAMINAÇÃO

2012 ◽  
Author(s):  
Elizêne Veloso Ribeiro ◽  
Antônio Pereira Magalhães Junior ◽  
Adolf Heinrich Horn ◽  
Wallace Magalhães Trindade
Keyword(s):  
Heavy Metals ◽  
Water Quality ◽  
Heavy Metal ◽  
Urban Areas ◽  
Heavy Metal Concentration ◽  
Icp Oes ◽  
Dissolved Metals ◽  
Contamination Index ◽  
Sao Francisco River ◽  
São Francisco River

Este trabalho apresenta resultados da avaliação da qualidade da água na secção do Rio São Francisco no segmento entre Três Marias e Pirapora. Foram monitorados parâmetros físico-químicos e os elementos Zn, Cd, Pb, Cr, Co, Cu, Ba, Ni, Al, Mn, Ca, Mg e Fe durante um ano; as concentrações dos metais foram obtidas por leitura em ICP-OES. Vários elementos apresentaram altos níveis de contaminação nas áreas urbano-industriais de Três Marias e Pirapora. No segmento de influência rural entre os dois centros urbanos e a jusante de Pirapora, foram observadas alterações para os metais pesados (Cd, Cu, Cr, Co e Ni), que evidenciam a necessidade de um estudo de contaminação dos solos agrícolas, principalmente irrigados, na região. A variação sazonal marca a diferença da qualidade da água no segmento no que se refere aos metais em suspensão com maiores concentrações na estação chuvosa. O Índice de Contaminação foi definido pela razão entre a concentração encontrada e os limites ambientais da Resolução Conama 357/2005. Os resultados evidenciam a degradação da qualidade da água nos centros urbano-industriais, cujos altos Ic decorrem das elevadas concentrações de Zn, Cd, Cu, Cr e Ni. Chamam atenção principalmente os valores que foram obtidos para os metais dissolvidos devido à maior possibilidade de efeitos tóxicos.. Ressalta-se a necessidade de intervenção nas áreas de maior Ic adjacentes aos centros urbano-industriais visando a melhorar a qualidade da água e responder à população local que tem forte relação com o Rio São Francisco.Palavras-chave: Metais Pesados, Qualidade da Água, Índice de Contaminação, Rio São Francisco e Uso do Solo. ABSTRACT: HEAVY METALS AND WATER QUALITY OF THE SÃO FRANCISCO RIVER IN SEGMENT BETWEEN TRÊS MARIAS AND PIRAPORA –MG: INDEX OF CONTAMINATION. This work presents heavy metal concentration measurements taken across a section of the São Francisco River, between Três Marias and Pirapora, to evaluate water quality. The physicochemical parameters and the elements Zn, Cd, Pb, Cr, Co, Cu, Ba, Ni, Al, Mn, Ca, Mg and Fe were monitored during a one year period; the concentration levels of metals were determined by ICP-OES. High contamination levels were found for many elements in Três Marias and Pirapora urban-industrial areas. The section under rural influence, located between the two urban areas and downstream from Pirapora, presented anomalous heavy metal (Cd, Cu, Cr, Co and Ni) readings. That indicates that soil contamination studies are needed, especially on irrigated soil, in agricultural areas within the region. The index is defined by the ratio between the concentrations found which results from environmental limits established by Resolution CONAMA 357/2005. The results show the degradation of water quality in urban-industrial centers, which high rates of contamination result from high concentrations of Zn, Cd, Cu, Cr and Ni. The values obtained for dissolved metals are especially worth of attention, due to the greater risk of toxic effects caused by them. We stress the need for intervention in the areas showing the highest contamination index - which are located next to urban-industrial centers - to improve water quality and meet the expectations of the locals, whose lives are strongly intertwined with the São Francisco River.Keywords: Heavy Metals, Water Quality, Contamination Index, São Francisco River and Soil Use

scholarly journals Hubungan Logam Berat Pb terhadap Fraksi Sedimen dan Bahan Organik di Muara Sungai Tiram, Marunda, Jakarta Utara

2019 ◽  
Vol 8 (2) ◽  
pp. 61
Author(s):  
Indah Syahiddah Fitroh ◽  
Petrus Subardjo ◽  
Lilik Maslukah
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Grain Size ◽  
Organic Matter ◽  
Atomic Absorption ◽  
Size Fraction ◽  
Heavy Metal Concentration ◽  
Atomic Absorption Spectrophotometer ◽  
Metal Concentrations ◽  
Heavy Metal Concentrations

Kegiatan industri di Perairan Muara Sungai Tiram, Marunda, Jakarta Utara, akan berdampak terhadap konsentrasi logam berat di Perairan. Sedimen merupakan tempat akumulasinya logam tersebut dan pada suatu saat akan dapat menjadi sumber bagi kolom perairan diatasnya. Tujuan penelitian ini adalah untuk mengetahui konsentrasi logam berat pada sedimen dasar dan mengetahui korelasinya terhadap ukuran butir serta dan bahan organik. Analisa logam berat diawali dengan proses destruksi menggunakan aquaregia dan supernatannya di baca nilai absorbasninya menggunakan Atomic Absorption Spectrophotometer (AAS). Untuk melihat hubungan parameter logam berat terhadap ukuran butir dan bahan organik, menngunakan analisis korelasi Pearson. Berdasarkan penelitian tersebut diperoleh nilai konsentrasi logam berat dengan kisaran 20,19–55,68 ppm. Konsentrasi logam berat memiliki korelasi positif terhadap fraksi silt dan clay.  Distribusi logam berat di lokasi penelitian berasosiasi kuat terhadap fraksi ukuran butir halus dan bahan organik, melalui proses adsorpsi. The waters of the Muara Sungai Tiram, Marunda, North Jakarta, are areas that are surrounded by very dense industrial activities. The existence of these activities has an impact on the concentration of heavy metals in basic sediments in these waters. The purpose of this study was to determine the concentration of heavy metals in basic sediments and determine the correlation between the concentration of heavy metals with grain size on the base sediment in the liquid and the correlation between the concentration of heavy metals with organic matter. Analysis of heavy metal concentrations was carried out using the acid destruction method, then the concentration was read using the Atomic Absorption Spectrophotometer (AAS), and processed into a heavy metal concentration map using Arcgis 10.3. Based on these studies the value of heavy metal concentrations obtained in the range of 20.19 - 55.681 ppm. Heavy metal concentrations have a positive correlation with the mud and organic matter fractions with r values of 0.68 and 0.10, respectively. The distribution of heavy metals in this study is strongly associated with the fine grain size fraction and organic matter, through the adsorption process

scholarly journals PEMANFAATAN MAKROZOOBENTOS SEBAGAI BIOINDIKATOR PENCEMARAN LOGAM Pb DAN Cd DI PERAIRAN TELUK SEMARANG

2018 ◽  
Vol 7 (1) ◽  
pp. 9-17
Author(s):  
Irzzan Gaus ◽  
Haeruddin Haeruddin ◽  
Churun Ain
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Organic Matter ◽  
Organic Carbon ◽  
Metal Concentration ◽  
Heavy Metal Concentration ◽  
Average Concentration ◽  
Research Station ◽  
Check List ◽  
List Method

Penelitian ini bertujuan untuk mengetahui tingkat pencemaran Pb dan Cd yang terjadi di perairan Teluk Semarang. Penelitian dilakukan di 2 (dua) stasiun penelitian berbeda yaitu perairan Tambak Lorok (stasiun I) dan perairan Mangunhardjo (stasiun II). Analisa kandungan logam berat pada sedimen dilakukan dengan menggunakan AAS. Perhitungan kandungan bahan organik dilakukan dengan metode Gravimetri. Perhitungan kandungan karbon organik dilakukan dengan mengonversi dari kandungan bahan organik. Karbon merupakan unsur yang dapat mengikat unsur-unsur lain di perairan. Proses identifikasi makrozoobentos dilakukan dengan metode check list. Rata-rata konsentrasi logam berat Pb dan Cd yang didapatkan di stasiun I sebesar 15,709 mg/kg dan <0,004 mg/kg, sedangkan rata-rata konsentrasi logam berat Pb dan Cd di stasiun II sebesar 12,283 mg/kg dan <0,004 mg/kg. Famili makrozoobentos tertinggi yang didapatkan pada kedua stasiun adalah famili Archidae dan Nereidae. Analisa makrozoobentos menghasilkan nilai keanekaragaman pada stasiun I sebesar 1.3008 dan pada stasiun II sebesar 1.00424; nilai keseragaman pada stasiun I sebesar 0.80823 dan pada stasiun II sebesar 0.9141; dan nilai dominasi pada stasiun I sebesar 0.32426 dan pada stasiun II 0.38776. Nilai korelasi antara logam berat dengan karbon organik sebesar 0,632, logam berat dengan kelimpahan makrozoobentos sebesar 0,591, dan karbon organik dengan kelimpahan makrozoobentos sebesar 0,496. Nilai korelasi tersebut menunjukkan bahwa adanya hubungan yang cukup kuat antar ketiga variabel tersebut. Nilai keseragaman makrozoobentos mendekati 1 yang menunjukkan spesies cukup beragam dan tidak terjadi dominasi di kedua stasiun. Nilai keanekaragaman makrozoobentos pada kedua stasiun berada pada nilai 1>a< 3 yang menunjukkan bahwa terjadi pencemaran sedang pada kedua perairan tersebut. This research supposed to know the level of Pb and Cd pollution that occurred in Semarang Bay waters. The research was conducted in 2 (two) different research stations that were in Tambak Lorok (station I) and Mangunhardjo (station II) waters. Analysis of heavy metals in organic contents used AAS. Calculated the organic matter contents used Gravimetri method. Calculated the organic carbon with covertion from organic matter contents. Carbon is an element that can bind other elements in the water. Macrozoobenthos identify processed used check list method. The average concentration of heavy metal of Pb and Cd from station I 15,709 mg/kg and <0,004 mg/kg, and average of heavy metal concentration of Pb and Cd from station II 12,283 mg/kg and <0,004 mg/kg. Macrozoobentos analysis resulted value of diversity in station I was 1.3008 and in station II was 1.00424; uniformity value in station I was 0.80823 and value from station II was 0.9141;  and dominance value from ststion I was 0.32436 and value of dominance from station II was 0.38776. Correlation value between heavy metal and organic carbon is 0,632, heavy metal and macrozoobenthos abundance is 0,591, and organic carbon and macrozoobenthos abundance is 0,496. Those correlation value indicated that there is a relation between the three variables. Uniformity value approached to one (1) that means existence of species good enough diverse and that mean there was no domination in those two (2) stations, and macrozoobenthos diversity’s value in the two (2) stations was 1> a <3 that mean there was indicated moderate pollution in both of research station.

Heavy metals in shallow groundwater of the urban area in Suzhou, northern Anhui Province, China

2014 ◽  
Vol 9 (2) ◽  
pp. 197-205 ◽  
Author(s):  
Linhua Sun ◽  
Weihua Peng
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Urban Area ◽  
Human Activities ◽  
Urban Areas ◽  
Shallow Groundwater ◽  
Anhui Province ◽  
Pollution Indices ◽  
Groundwater Samples ◽  
The City

Urbanization and related human activities have brought bad effects to the environment, especially shallow groundwater systems in urban areas. In this study, sixty-three shallow groundwater samples in the urban area of Suzhou, northern Anhui Province, China were collected and analyzed for the concentrations of eight heavy metals (Fe, Mn, Zn, Cr, Cd, Cu, Pb and Ni). The results indicate that some of the heavy metals (Zn, Ni, Cr, Cd and Fe) are present below the international drinking water standards but more than half of the sources sampled do not meet the requirements for Mn, Cu and Pb. Quality assessment suggests that all of the samples have heavy metal pollution indices (HPI) lower than 100, implying that they can be used for drinking directly. However, the degrees of contamination (Cd) observed suggest that about one third of the samples are classified as heavily polluted. Heavy densities of population and traffic in the old quarter of the city are considered responsible for the pollution of the groundwater system in the city. Moreover, Cd, Pb, Ni and Mn are identified as metals affected by human activities, whereas Fe, Zn, Cu and Cr are considered to originate from the natural environment, based on the comparison of spatial distributions of HPI, Cd and heavy metal concentrations, as well as factor analysis.

scholarly journals Study of Atmospheric Pollution and Health Risk Assessment: A Case Study for the Sharjah and Ajman Emirates (UAE)

Atmosphere ◽  
2021 ◽  
Vol 12 (11) ◽  
pp. 1442
Author(s):  
Yousef Nazzal ◽  
Nadine Bou Orm ◽  
Alina Barbulescu ◽  
Fares Howari ◽  
Manish Sharma ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Health Risk ◽  
Population Health ◽  
United Arab Emirates ◽  
Urban Areas ◽  
Hazard Quotient ◽  
Heavy Metal Concentration ◽  
Background Values ◽  
The Mean

Dust is a significant pollution source in the United Arab Emirates (UAE) that impacts population health. Therefore, the present study aims to determine the concentration of heavy metals (Cd, Pb, Cr, Cu, Ni, and Zn) in the air in the Sharjah and Ajman emirates’ urban areas and assesses the health risk. Three indicators were used for this purpose: the average daily dose (ADD), the hazard quotient (HQ), and the health index (HI). Data were collected during the period April–August 2020. Moreover, the observation sites were clustered based on the pollutants’ concentration, given that the greater the heavy metal concentration is, the greater is the risk for the population health. The most abundant heavy metal found in the atmosphere was Zn, with a mean concentration of 160.30 mg/kg, the concentrations of other metals being in the following order: Ni > Cr > Cu > Pb > Cd. The mean concentrations of Cd, Pb, and Cr were within the range of background values, while those of Cu, Ni, and Zn were higher than the background values, indicating anthropogenic pollution. For adults, the mean ADD values of heavy metals decreased from Zn to Cd (Zn > Ni > Cr > Cu > Pb > Cd). The HQ (HI) suggested an acceptable (negligible) level of non-carcinogenic harmful health risk to residents’ health. The sites were grouped in three clusters, one of them containing a single location, where the highest concentrations of heavy metals were found.

scholarly journals Multiple Factors Influence the Accumulation of Heavy Metals (Cu, Pb, Ni, Zn) in Forest Soils in the Vicinity of Roadways

2021 ◽  
Vol 232 (5) ◽  
Author(s):  
Dawid Kupka ◽  
Mateusz Kania ◽  
Marcin Pietrzykowski ◽  
Adam Łukasik ◽  
Piotr Gruba
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Organic Matter ◽  
Soil Organic Matter ◽  
Soil Ph ◽  
Heavy Metal Contamination ◽  
Forest Edge ◽  
Silver Fir ◽  
Geochemical Background ◽  
The Road

AbstractIntensified vehicular traffic causes increased heavy metal contamination of the environment. We investigated the heavy metal chemistry of soils located under silver fir stands in the vicinity of Poland’s S7 roadway. Three sampling sites were located in fir stands in central Poland. Fieldwork included soil sampling of the organic (O) horizon and mineral (A) topsoil. We analyzed the soil pH, carbon (C) and nitrogen (N) concentration, and the HCl-extractable forms of sodium (Na) and heavy metals: copper (Cu), nickel (Ni), lead (Pb), and zinc (Zn). The stoichiometric ratios Cu:C, Ni:C, Pb:C, and Zn:C were also calculated. In all sites, a higher Na concentration was found in the 0–10 m from the forest edge. This zone was characterized by increased pH in the O horizon, increased Zn and Ni in the A horizon, and a decreased Pb in the O horizon. There was no clear pattern for the Cu concentration. The Ni:C and Zn:C ratios were correlated with pH, while Pb:C and Cu:C ratios were correlated with the clay minerals. HCl-extractable Ni and Zn concentrations in A horizon were greater near the roadway, revealing strong pH dependency. The roadway affects the geochemical background of the topsoil in the nearby fir stands. Mechanistically, we suggest that Na increases the soil pH and therefore enhances the ability of soil organic matter to bind Ni and Zn by releasing hydrogen from soil organic matter functional groups into the soil solution. A depleted Pb near the road was likely owing to the strong competition from Na.

INFLUENCE OF THE ECOLOGICAL STATE OF THE SEREPOK RIVER (VIETNAM) ON ACCUMULATION OF HEAVY METALS IN ORGANS OF FISH

2017 ◽  
pp. 98-105
Author(s):  
Ngo The Cuong ◽  
Tran Hoan Quoc ◽  
Svetlana Vasilievna Zolotokopova
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
River Water ◽  
Bottom Sediments ◽  
Heavy Metal Concentration ◽  
Industrial Areas ◽  
Industrial Regions ◽  
Cadmium Lead ◽  
Sarotherodon Galilaeus ◽  
Water Bottom

The article focuses on the study of change of containing heavy metals (zinc, copper, iron, cadmium, lead, arsenic) in the abiotic and biotic components of the Serepok river (Vietman) influenced by wastewater discharge from industrial areas. Heavy metal content was determined in the river water and bottom sediments in the four zones: above and within the boundaries of industrial regions Xoa Phu and Tam Thang and in two water reservoirs situated below the boundaries of those industrial areas. Tilapia Galilean ( Sarotherodon galilaeus ), Hemibagrus ( Hemibagrus ), and sazan ( Cyprinus carpio ) caught in these areas were the hydrobionts under study in which liver, gills, skeleton and muscles accumulation of heavy metals was detected. In the organs of fish caught in the river within industrial region, heavy metals concentration was 3-7 times higher. The greatest concentration of heavy metals was found in the liver and gills of fish caught in the boundaries of industrial regions, the least concentration was in the muscles. In most cases, significant correlation between heavy metal concentration in organs of fishes and in river water, bottom sediments has been revealed.

ASSESSMENT OF HEAVY METAL CONCENTRATION IN COCONUT WATER

1970 ◽  
pp. 07-10
Author(s):  
MdDidarul Islam, Ashiqur Rahaman, Aboni Afrose
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Heavy Metal Concentration ◽  
Coconut Water ◽  
Toxic Heavy Metals ◽  
High Concentration ◽  
Toxic Heavy Metal ◽  
Low Concentration ◽  
Wet Ashing ◽  
Aas Method

This study was based on determining concentration of essential and toxic heavy metal in coconut water available at a local Hazaribagh area in Dhaka, Bangladesh. All essential minerals, if present in the drinking water at high concentration or very low concentration, it has negative actions. In this study, fifteen samples and eight heavy metals were analyzed by Atomic Absorption Spectroscopy (AAS) method which was followed by wet ashing digestion method. The concentration obtained in mg/l were in the range of 0.3 to 1.5, 7.77 to 21.2, 0 to 0.71, 0 to 0.9, 0 to 0.2, 0.9 to 17.3, 0.1 to 0.9, 0 to 0.9 and 0 to 0.7 for Fe, Ni, Cu, Cd, Cr, Zn, Pb and Se respectively. From this data it was concluded that any toxic heavy metals like Cd, Cr, Pb and Ni exceed their toxicity level and some essential nutrients were in low concentration in those samples. 

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