Assessment of heavy metal pollution of topsoil in settlement area, Darkhan city

2018 ◽  
pp. 55-65 ◽  
Author(s):  
Sonomdagva Ch ◽  
Chultem Ch ◽  
Byambatseren Ch
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Spatial Distribution ◽  
Enrichment Factor ◽  
Contamination Factor ◽  
Pollution Assessment ◽  
Heavy Metal Concentration ◽  
Average Concentration ◽  
Background Concentration ◽  
Toxic Heavy Metals

This study was carried out to assess the content of toxic heavy metals (As, Co, Cr, Cu, Ni, Pb, V, Zn), determine pollution and spatial distribution of topsoil in Darkhan city which is one of the largest cities in Mongolia, to determine pollution and spatial distribution. The selected study area of Darkhan city was divided into 3 zones (industrial zones, ger districts or livestock breeding zones and private apartments or residential district zones) representing settlement’s characteristics, and 14 points were sampled from topsoil. In order to estimate the level of pollution, the contamination factor, the degree of contamination, pollution load index, and enrichment factor that were formulated by Hakanson, Tomlison, Selvaraj were used in our study. The results were come out by comparing the heavy metal concentration of the topsoil with it`s background concentration. In terms of spatial distribution of heavy metals in the topsoil, heavy metals concentration in ger district and industrial areas is relatively high, but pollution assessment is not very high. As a result of the enrichment factor which was used for assessment of contamination source, the average concentration of 8 elements (As, Co, Cr, Cu, Ni, Pb, V, Zn) at 13 points presented that was derived from natural sources.

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. 

scholarly journals Spatial distribution of heavy metals in surface sediments of Kalametiya Lagoon in southern Sri Lanka; insight towards pollution status and socio-economic interactions

2021 ◽  
Author(s):  
Sunanda Kodikara ◽  
Hossein Tiemoory ◽  
Mangala Chathura De Silva ◽  
Pathmasiri Ranasinghe ◽  
Sudarshana Somasiri ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Spatial Distribution ◽  
Sri Lanka ◽  
Suspended Sediments ◽  
Potential Effect ◽  
Toxic Heavy Metals ◽  
Threshold Effect Level ◽  
Effect Level ◽  
Economic Interactions

Abstract Heavy metal (HM) pollution has become a serious threat to coastal aquatic ecosystems. This study, therefore, aimed at assessing the spatial distribution of selected heavy metals/metalloids including Arsenic (As), Cadmium (Cd), Chromium (Cr), Lead (Pb), and Mercury (Hg) in surface sediment (0–15 cm) samples collected across Kalametiya Lagoon in southern Sri Lanka. Forty-one (41) grid points of the lagoon were sampled and the sediment samples were analyzed for HM content by using ICP-MS. A questionnaire survey was carried out to investigate the possible sources for HM pollution in Kalametiya Lagoon. Water pH and salinity showed significant variation across the lagoon. Overall mean value of pH and salinity were 6.68 ± 0.17 and 2.9 ± 2.2 PSU respectively. The spatial distribution of the heavy metals was not monotonic and showed a highly spatial variation. The kernel density maps of the measured heavy metals demarcated several different areas of the lagoon. The mean contents of As, Cd, Cr, Hg, and Pb were lower than that of threshold effect level (TEL) however, higher for Hg at the North Inlet. Nevertheless, it was still lower than potential effect level (PEL). Socio-economic interactions have dramatically reduced during the past two decades. Industrial sewage, river suspended sediments and agrochemicals such as fertilizers, pesticides were reportedly identified as the possible sources for heavy metal loads. Accumulation of toxic heavy metals can be minimized by detouring the water inflow to the lagoon.

scholarly journals Heavy Metal Concentration (Pb, Cu, Cd, Zn) In Water And Sediments In Serangan Waters, Bali

2021 ◽  
Vol 8 (1) ◽  
pp. 115
Author(s):  
Gede Surya Indrawan ◽  
I Nyoman Giri Putra
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Sea Water ◽  
Heavy Metal Concentration ◽  
Average Concentration ◽  
Quality Guidelines ◽  
Average Analysis ◽  
Standard Quality ◽  
Canadian Council ◽  
Council Of Ministers

 Heavy metal pollution can disturb aquatic ecosystems and indicator of water quality. This study aims to determine the concentration of heavy metals (Pb, Cu, Cd, Zn) in water and sediments. This study was conducted in the waters of Serangan, South Denpasar District, Bali in June-August 2019. The research with each location taking 8 points of water and sediment sampling and measuring the quality of its waters. Water samples taken at the surface of the water as much as 330 ml and sediment samples taken as much as 500 grams. The method used is wet ashing preparation and analyzed by means of AAS (Atomic Absorbsion Spektrophotometri). The results of the average analysis of heavy metal concentrations in water are Pb 0 mg / L, Cd 0.438 mg / L, Cu 0 mg./L, and Zn 0.284 mg / L. The results of the analysis are compared with the standard quality value of sea water that the heavy metals Cd and Zn have exceeded the threshold. While the average concentration of heavy metals in sediments are Pb 17.444 mg / kg, Cd 18.093 mg / kg, Cu 113.981 mg / kg, and Zn 53.505 mg / kg. The concentration of Cd and Cu heavy metals exceeds the limits set by the ANZECC / ARMCANZ quality guidelines and the Canadian Council of Ministers of the Environment.

scholarly journals Industrial Activities and Heavy Metal Pollution: Assessment of Concentration of Zn, Cu, Cd Cr and, Pb in Soil Samples around Dangote Cement Factory Kogi State, Nigeria

2020 ◽  
pp. 75-86
Author(s):  
Sani Daniel Eneji ◽  
Matthew Chijioke Apeh ◽  
Enyojo Samson Okwute ◽  
Alowakennu Micheal ◽  
Kayode Ibrahim Fesomade
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Ecological Risk ◽  
Contamination Factor ◽  
Pollution Assessment ◽  
Soil Samples ◽  
Industrial Activities ◽  
Cement Factory ◽  
The Relationship ◽  
Geo Accumulation

This study aims at determining the concentration of heavy metal contaminants in the soil around Dangote cement factory Kogi State, Nigeria. It also seeks to understand the relationship between the heavy metals and the level of concentration with respect to distance and direction as well as the ecological risk it poses. The monitoring and assessment of soil pollution have over the years become a very important area of study due to the significant threat it poses to the food web. A total of 33 soil samples were collected in the Northern, Eastern and Western axis within a radius of 4km of Dangote cement factory at a depth of 0-15cm using a stainless steel auger. The contamination factor indices for Cr and Cu show moderate pollution across all the samples collected from different axis at a different distance from the factory. Zn also pose a moderate pollution across the samples except for WK4 and NK4 where it is in a low level of contamination. The geo-accumulation indices for Pb and Cr show unpolluted to moderately polluted across all samples at different locations expect for sample location EK4. The results of the ecological risk assessment revealed that Cd poses the highest ecological risk of all the five heavy metals investigated.

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.

Ecological Risk of Heavy Metal in Agricultural Soil and Transfer to Rice Grains

2020 ◽  
Author(s):  
Upoma Mahmud ◽  
Md. Tareq Bin Salam ◽  
Abu Khan ◽  
Md. Mizanur Rahman
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Agricultural Soil ◽  
Risk Index ◽  
Reference Value ◽  
Absorption Spectrometry ◽  
Heavy Metal Concentration ◽  
Rice Grain ◽  
Toxic Heavy Metals ◽  
Soil Extracts

Abstract Higher accumulation of toxic heavy metals in rice grain and agricultural soil may lead to an imbalanced ecosystem. The present study was carried out to assess the risk of different heavy metals nickel, copper, arsenic, lead, and manganese in agricultural soil and transfer status to rice grain. The samples were collected from four agricultural fields at different times in the Dumuria Upazila (sub-district) under Khulna district in Bangladesh. Heavy metal concentration in soil extracts, irrigation water samples, and grain samples was determined by Atomic Absorption Spectrometry (AAS). Average metal concentrations were calculated and compared with the reference value in soil. In most of the cases, the existence of heavy metals in agricultural soil was greater than the reference soil which is a rising concern. Overall risk index (RI) stated that the examined soils were at moderate risk of contamination. Transfer factor (TF) of Arsenic (0.037 to 0.115) and Manganese (0.056 to 0.155) from soil to rice grain were higher that is also a matter of concern. On the other hand, TF of Lead (Pb) was found in a very negligible amount which is a good sign. Regular monitoring of heavy metals in agricultural soil should be initiated and the awareness level should be increased to avoid environmental problems.

scholarly journals Evaluation of heavy metals in agricultural soils from Katsina state Nigeria

2020 ◽  
Vol 8 (2) ◽  
Author(s):  
Aliyu Ibrahim Yaradua ◽  
Adamu Jibrin Alhassan ◽  
Abdullahi Nasir ◽  
Kabir Ibrahim Matazu ◽  
Aminu Usman ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Enrichment Factor ◽  
Agricultural Soil ◽  
Agricultural Soils ◽  
Sampling Site ◽  
Contamination Factor ◽  
Pollution Load Index ◽  
Soil Samples ◽  
Pollution Load

This work contributes to the monitoring of Agricultural soil pollution in Katsina State, North western Nigeria by assessing the degree of heavy metal pollution in Agricultural soil samples. The study was conducted in the year 2017 within some catchment areas located within the 3 senatorial zones that constitute to make up the state (Katsina senatorial zone: Birchi, Dutsinma and Katsina; Daura senatorial zone: Daura, Ingawa and Zango; Funtua senatorial zone: Dabai, Funtua, Kafur, Malunfashi and Matazu).  Analysis for the concentration of these heavy metals; Cr, Cd, Fe, Ni, Mn, Pb and Zn was conducted by the use of AAS (by Atomic Absorption Spectrophotometry) method. . Several indices were used to assess the metal contamination levels in the Agricultural soil samples, namely; Geo-accumulation Index (Igeo), Enrichment Factor (EF), Contamination Factor (CF), Degree of Contamination (Cd) and Pollution Load Index (PLI). The result of this study has shown that generally among the heavy metals evaluated, the highest concentration was observed for Fe (range: 20.195-38.347 ppm), followed by Zn (range: 0.528-1.134 ppm), Pb (range: 0.256-0.627 ppm), Mn (range: 0.261-0.572 ppm) and Cr (range: 0.093-0.344 ppm). While Cd has the lowest concentration (range: 0.022-0.043 ppm). For all the site sampled the heavy metal Ni was below detection level (BDL). From the results of heavy metals I-geo values, according to Muller’s classification,  soil samples from Birchi, Daura, Dutsinma, Kafur and Zango were unpolluted (class 0) while soil samples from Dabai, Funtua, Ingawa, Katsina, Malunfashi and Matazu are moderately polluted (class 1). The result for the enrichment factor has shown that with the exception of the heavy metal Fe, which shows significant enrichment for all the sites sampled all the other heavy metals show deficiency to minimal enrichment. Also based on the contamination factors for all soil samples the heavy metal Fe has a CF values range of 1.2861-2.3240, indicating that the Agricultural soil samples are moderately contaminated with Fe. In contrast, the rest of the heavy metals exhibit low contamination in general. The value of PLI ranges from 0.2408 to 0.4935, indicating unpolluted to moderate pollution, with the sampling site for Katsina displaying the highest PLI value while the sampling site of Ingawa has the lowest PLI. The Eri values for all samples are all < 40, presenting low ecological risk.  The results suggest that the Agricultural soils samples from Katsina state has low contamination by the heavy metals evaluated.Key words: Agricultural soils, Heavy metals, Katsina state, Pollution load index, Contamination factor.

scholarly journals Geochemical assessment of heavy metal impact on soil around Ewu-Elepe Dumpsite, Lagos State, Nigeria

2021 ◽  
Vol 22 (3) ◽  
pp. 119-138
Author(s):  
A.O. Olorunfemi ◽  
A.B. Alao-Daniel ◽  
T.A. Adesiyan ◽  
C.E. Onah
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Agricultural Soils ◽  
Control Sample ◽  
Shallow Groundwater ◽  
Contamination Factor ◽  
Heavy Metal Concentration ◽  
Geochemical Data ◽  
Multivariate Statistical ◽  
Accumulation Index

The concentrations of certain heavy metals in the top soils around the Ewu-Elepe dumpsite and its environs were determined with a view to  ascertaining the level of metal pollution in the soils of the dumpsite vicinity. Thirty-two (32) soil samples were randomly collected within the dumpsite vicinity and one control sample was collected from a distance of about 9.0 km from the dumpsite. The samples were prepared according  to standard procedures and analyzed for some heavy metals (Ni, Mn, Co, Cd, Cu, Pb, and Zn) using the Atomic Absorption Spectrophotometer at the Geochemistry Laboratory of the Department of Geology, Obafemi Awolowo University, Ile-Ife. The geochemical data was subjected to both  univariate and multivariate statistical treatments and comparisons were made with various world standards. The results obtained showed that the mean concentrations of Ni (12.00 ppm), Mn (525.60 ppm), Co (5.64 ppm), Cu (44.59 ppm), and Zn (105.28 ppm) were within the acceptable limits for agricultural soils while those of Cd (1.40 ppm) and Pb (33.74 ppm) exceeded the limits. Geo-accumulation index and contamination factor revealed that the soils around the dumpsite were moderately contaminated with Cd and slightly contaminated with Pb. The overall decreasing order of heavy metal concentration in the dumpsite soil is: Cd > Pb > Zn > Cu > Mn > Co > Ni. The study concluded that the soils around the Ewu-Elepe dumpsite was contaminated with Cd and Pb and as such should be discouraged in its usage for agricultural related purposes as these highly toxic trace elements can be absorbed by plants. A well-engineered landfill that takes into consideration the local geology and the topography of the area should be designed so as to prevent infiltration of leachates into the soil and shallow groundwater systems. Keywords - Heavy metals, Soil,Ewu-Elepe,Nigeria,Dumpsite,Contamination.

scholarly journals Contamination of Stream Sediment With Heavy Metals in the Awetu Watershed of Southwestern Ethiopia

2021 ◽  
Vol 9 ◽  
Author(s):  
Higemengist Astatkie ◽  
Argaw Ambelu ◽  
Embialle Mengistie
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Metal Concentration ◽  
Contamination Factor ◽  
Heavy Metal Concentration ◽  
Emission Spectrometry ◽  
Sediment Samples ◽  
Southwestern Ethiopia ◽  
High Degree ◽  
Very High

Surface sediment samples were collected from different streams of Awetu Watershed in southwestern Ethiopia. Sediment samples were analyzed for As, Cd, Cr, Pb, and Hg levels using inductively coupled plasma optical emission spectrometry. The heavy metal concentration ranged from 183.60 to 1,102.80 mg/kg for As (mean 623.32 ± 291.65 mg/kg), 4.40–303.20 mg/kg for Cd (151.09 ± 111.5 mg/kg), 149.20–807.20 mg/kg for Cr (375 ± 212.03 mg/kg), 485.60–3,748.80 mg/kg for Pb (2005.94 ± 954.99 mg/kg) and 3.6–5.6 mg/kg for Hg (4.64 ± 0.59 mg/kg). The mean heavy metal concentration in the streams followed the decreasing order of Pb &gt; As &gt; Cr &gt; Cd &gt; Hg. As, Cr and Pb are detected at high concentrations with values of 623.32, 375.00, and 2,005.94 mg/kg respectively. A low level of heavy concentration (3.6 mg/kg) was recorded for Hg. The contamination factor (CF) of all the studied heavy metals ranged from a low degree (CF &lt; 1) to a very high degree (CF ≤ 6). Mainly, Dololo and Kito streams show a very high degree of contamination (CF ≤ 6) than Awetu and Boye streams. Specifically, As, Cd and Cr in the Dololo and Kito streams have significantly elevated concentrations than others. Geo-accumulation index (Igeo) shows low to moderate contamination level with As, Pb, and Hg; uncontaminated to heavily contaminated by Cr; and moderate to extreme contamination by Cd. Untreated solid waste, garages and farmlands were sources of contamination. Streams receiving wastewater effluents from teaching institutions had higher heavy metal concentrations. Dumping of electronic wastes and car washing discharges also identified as another source of pollution.

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.

Sign in / Sign up

Export Citation Format

Share Document