scholarly journals Speciation Study of Heavy Metals in Soil within the Vicinity of a Metal Recycling Factory at Ile-Ife, Southwestern Nigeria

2011 ◽  
Vol 7 (1) ◽  
pp. 1141-1159 ◽  
Author(s):  
John Adekunle Oyedele Oyekunle ◽  
Abolanle Saheed Adekunle ◽  
Aderemi Okunola Ogunfowokan ◽  
Lateefat Moyosore Durosinmi ◽  
Olusola Adelowotan ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Extraction Process ◽  
Soil Samples ◽  
Southwestern Nigeria ◽  
Contamination Index ◽  
Mean Values ◽  
Flame Atomic Absorption ◽  
Flame Atomic Absorption Spectrophotometer ◽  
Metal Recycling ◽  
Speciation Study

A speciation study of Al, Cd, Cu, Mn, Pb and Zn in soil samples from a metal recycling factory in Ile-Ife Osun State, Nigeria, was carried out in order to assess the heavy metal pollution impact of the industrial processes on the immediate environment. Surface soil dust samples collected within the vicinity of the factory were subjected to a five-stage sequential extraction process. Levels of heavy metals in each fraction were determined using Flame Atomic Absorption Spectrophotometer (FAAS). The overall mean values obtained for the metals in the fractions gave the range: Al (0.03 ± 0.01 to 0.20 ± 0.01 µg/g ); Cd (0.03 ± 0.01 to 0.23 ± 0.02 µg/g) ; Cu (2.93 ± 0.02 to 18.30 ± 1.95 µg/g) ; Mn (17.33 ± 0.03 to 91.68 ± 2.90 µg/g); Pb (0.03 ± 0.01 to 0.43 ± 0.02 µg/g)  and Zn (8.20 ± 0.01 to 35.08 ± 0.02 µg/g) . Both the contamination index and enrichment factor results indicated that all the soil samples were contaminated with Cd while a few sites showed Cu contamination. The mobility potential of the metals in the soil sample decreased in the order: Mn > Al > Zn > Cd > Cu > Pb (West) and Cd > Al > Pb > Zn > Mn > Cu (East). The study revealed that the soil around the metal recycling factory is contaminated with heavy metals, and if left unmonitored and controlled could lead to serious environmental risk in the future. 

scholarly journals Evaluation of Heavy metals pollution around Kano municipal solid waste Dumpsites, Kano state, Nigeria

2021 ◽  
Vol 6 (1) ◽  
pp. 146-152
Author(s):  
M. Z. Karkana ◽  
◽  
Mujahid Ajah Matazu
Keyword(s):  
Heavy Metals ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Soil Samples ◽  
Pollution Indices ◽  
Surface Soils ◽  
Flame Atomic Absorption ◽  
Flame Atomic Absorption Spectrophotometer ◽  
The Mean ◽  
Mean Concentration

The research was conducted to assess the level of heavy metals contamination using single and integrated pollution indices in soils around municipal solid waste dumpsites of Kano Metropolis, Kano State, Nigeria. Forty two soil samples were collected from seven municipal solid waste dumpsites of Kano metropolis using circular plot method. A stainless hand auger at a depth of (0 to 15) top soils and sub-surface soils (15-30cm) depth were collected and analyzed with Flame atomic absorption spectrophotometer to determine the heavy metal concentration. The mean concentration (mg/kg) of heavy metals from the depth of (15-30 cm) were observed to follow a decreasing order Pb (7.71)>Zn (0.50) > Ni (0.45) > Cr (0.31) > Cd (0.025) while for surface soils (0- 15cm) the mean concentration were in the following order: Pb (1.77) > Ni (0.49) > Zn (0.30) > Cr (0.27) > Cd (0.012).The results showed that calculated CF and Er recorded that investigated soil samples are uncontaminated with Zn, Pb, Cd, Cr and Pb and Ni. The pollution load index (PLI) was less than unity showing that there was minimum pollution in the studied dumpsite. The potential ecological risk showed that soil samples were in the class of low contaminated with the studied heavy metals. The results showed that concentrations of heavy metals of soil samples from dumpsites location at waste dumpsites of Kano Metropolis were within limits of European Union (2002) standards. Keywords: Heavy metals, single and integrated pollution indices Kano, Municipal dumpsites

scholarly journals Accumulation of Lead and Cadmium in Soil and Vegetable Crops along Major Highways in Agra (India)

2010 ◽  
Vol 7 (4) ◽  
pp. 1174-1183 ◽  
Author(s):  
Shashank Sharma ◽  
F. M. Prasad
Keyword(s):  
Heavy Metals ◽  
Soil Samples ◽  
Motor Vehicles ◽  
Traffic Density ◽  
Vegetable Crops ◽  
Lead And Cadmium ◽  
Flame Atomic Absorption ◽  
Flame Atomic Absorption Spectrophotometer ◽  
High Traffic Density ◽  
Aerial Deposition

Environmental pollution of heavy metals from automobiles has attained much attention in the recent past. The present research was conducted to study Pb and Cd level concentrations in soil and vegetations along a major highway with high traffic density. Soil and vegetable samples along highway were collected from 10 sites in Agra district (India) and analyzed for two heavy metals (lead and cadmium) using flame atomic absorption spectrophotometer (AAS). The soil physicochemical properties were also determined. The general decrease in concentrations of these metals with distance from the highway indicates their relation to traffic. Higher accumulations of metals have been observed on vegetation and soil samples near to the highway (0-5 m) than on vegetation and soil samples from sites a little farther away ( at 5-10 m & 10-15 m). This is attributed mainly to aerial deposition of the metal particulates from motor vehicles. The values of heavy metals were compared with results found by other investigators in various countries worldwide.

Analysis of Heavy Metals in Soils around a Scrap Metal Recycling Company in Ile-Ife, Osun State, Southwestern Nigeria

2020 ◽  
Vol 9 (2) ◽  
Author(s):  
Oluseyi Orisadare ◽  
Hezekiah Efunwole ◽  
Mufutau Raimi
Keyword(s):  
Heavy Metals ◽  
Atomic Absorption ◽  
Contaminated Soils ◽  
Health Hazard ◽  
Scrap Metal ◽  
Industrial Wastes ◽  
World Health ◽  
Southwestern Nigeria ◽  
Flame Atomic Absorption ◽  
Metal Recycling

Contamination of soils by heavy metals has severely increased over the last few decades due to industrial wastes and human activities. Contaminated soils can constitute sources of health hazard to humans globally. However, there is paucity of information on the level of heavy metal concentration in the study area. This study therefore made a pioneering effort in investigating the concentration of selected heavy metals (Cd, Cu, Pb, Zn and Fe) in soils around a scrap metal recycling company in Ile-Ife, Osun State, Nigeria. Thirty soil samples and solid wastes were collected from four sides of the scrap metal recycling company. The samples were air-dried, digested using standard method and analyzed for the selected heavy metals using a flame atomic absorption spectrometer. Results of the Atomic Absorption Spectrophotometric (AAS) analysis revealed that for heavy metals, the concentrations in the soils were below the background levels and permissible limits recommended for soils in some countries. The value of the mean concentration of the analyzed heavy metals in the soils around the scrap metal recycling company ranged from 0.0040 – 0.0140 mg/kg for Cd, 0.061 – 0.108 mg/kg for Fe, 0.037 – 0.047 mg/kg for Cu, 0.003 – 0.0064 mg/kg for Pb and 0.019 – 0.121 mg/kg for Zn. The results from the study indicated that the concentrations of heavy metals around the scrap metal recycling company did not appear to be of serious concern. The concentrations of all the heavy metals were below the background level proposed by the World Health Organization (WHO) residential soil standards.

Spatial Distribution and Sources of Heavy Metal Pollution of Surface Dust in Taiyuan, China

2015 ◽  
Vol 737 ◽  
pp. 503-507
Author(s):  
Yong Zhang ◽  
Jing Xia Chen ◽  
Jun Qiu Zhang ◽  
Ying Te Wang
Keyword(s):  
Heavy Metals ◽  
Industrial Area ◽  
Shanxi Province ◽  
Surface Dust ◽  
Flame Atomic Absorption ◽  
Flame Atomic Absorption Spectrophotometer ◽  
Development Area ◽  
High Concentrations ◽  
Functional Areas ◽  
Different Levels

The concentrations of heavy metals (Cr, Cu, Ni, Pb and Mn) were determined using flame atomic absorption spectrophotometer after digested with four acids. The samples were collected from seven kinds of different functional areas in Taiyuan, China. The concentration of the heavy metals were found in Taiyuan is higher than the soil background values in Shanxi Province, which appeared different levels of accumulation. High concentrations of Cr, Ni, Mn were found in the samples from industrial area and Cu was noted from economic development area. The correlational analysis and principle component analysis showed that the heavy metals of surface dust in Taiyuan were mainly influenced by industrial activities.

scholarly journals Bioaccumulation of Some Heavy Metals in Ayre Fish (Sperata Aor Hamilton, 1822), Sediment and Water of Dhaleshwari River in Dry Season

2012 ◽  
Vol 40 (1) ◽  
pp. 147-153 ◽  
Author(s):  
Abu Tweb Abu Ahmed ◽  
Suman Mandal ◽  
Didarul Alam Chowdhury ◽  
Abu Rayhan M Tareq ◽  
M Mizanur Rahman
Keyword(s):  
Heavy Metals ◽  
Nitric Acid ◽  
Atomic Absorption ◽  
Water Samples ◽  
Dry Weight ◽  
Acid Digestion ◽  
Fish Organs ◽  
Flame Atomic Absorption ◽  
Flame Atomic Absorption Spectrophotometer ◽  
Nitric Acid Digestion

The present study was carried out to determine the level of bioaccumulation of some heavy metals in a freshwater fish Ayre (Sperata aor Hamilton, 1822) collected from Rajfulbaria (23°48?56.36? N and 90°14?54.04? E) of  Dhaleshwari river. Four heavy metals, namely chromium (Cr), copper (Cu), lead (Pb), and cadmium (Cd) were selected for this study. Metal concentrations were   determined by Flame Atomic Absorption Spectrophotometer after nitric acid  digestion of samples. The concentrations of accumulated heavy metals in fish were  also compared with the concentrations of metals in the sediments and waters of  that river. The level of bioaccumulations in different organs of S. aor were determined separately and compared among them. Average bioaccumulation levels  in S. aor were Cr: 1.458 mg/kg, Cu: 31.500 mg/kg, Pb: 18.776 mg/kg and Cd:  0.487 mg/kg of dry weight. The levels of heavy metals in sediments were Cr: 27.393 mg/kg, Cu: 37.450 mg/kg, Pb: 15.797 mg/kg and Cd: 2.083 mg/kg, and in water were Cr: 0.130 ppm, Cu: 0.000 ppm, Pb: 0.201 ppm and Cd: 0.001 ppm.The bioaccumulation of these four heavy metals in fish organs, sediment and  water samples were also compared with FAO approved standard levels and other  related studies, and found that the levels of bioaccumulation in the Dhaleshwari river exceeded all the standard levels. DOI: http://dx.doi.org/10.3329/bjz.v40i1.12904 Bangladesh J. Zool. 40(1):147-153, 2012

scholarly journals Non-carcinogenic and Carcinogenic Risk Assessment of Heavy Metals Exposure to Indoor Dust in Kathmandu, Nepal

2021 ◽  
Vol 42 (1) ◽  
pp. 16-28
Author(s):  
Sulakshya Bhandari ◽  
Sudarshana Shakya ◽  
Bijaya Adhikari ◽  
Mahesh Shrestha ◽  
Bindra Devi Shakya ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Land Use ◽  
Hazard Quotient ◽  
Heavy Traffic ◽  
Hazard Index ◽  
Carcinogenic Risk ◽  
Indoor Dust ◽  
Metal Exposure ◽  
Flame Atomic Absorption ◽  
Flame Atomic Absorption Spectrophotometer

The present study was carried out to assess the contamination of heavy metals in indoor household dust of Kathmandu, Nepal, and its adverse effect on the indoor environment and human health. The concentrations of four heavy metals (Cd, Cr, Ni, and Pb) in a total of ninety-three (N = 93) indoor dust samples collected from four different types of land use zones viz., commercial, heavy traffic, residential, and control (undisturbed) of Kathmandu were determined by the flame atomic absorption spectrophotometer (FAAS). The mean concentrations of Cd, Cr, Ni, and Pb in indoor dust samples over the study zones were 0.89, 158.1, 113.3, and 65.3 mg kg−1, respectively. The land use zones showed the various degree of metal contamination in indoor dust ranging from moderate to considerable level. PLI showed a high pollution load in the monitored locations, indicating an alarming condition and the urgent need for immediate remedial actions. Hazard quotient (HQ) values indicated ingestion as the major pathway of indoor dust heavy metal exposure to children while the inhalation pathway remained dominant in adults. Hazard index (HI) values showed no probable non-carcinogenic risk of the heavy metals present in the indoor dust of Kathmandu. For carcinogenic health risk, TLCR values were found within the acceptable safe limit indicating no cancer risk for both the receptor groups.

scholarly journals Assessment of Anions and Heavy Metals in Sediments from River Sio, Busia County, Kenya

2019 ◽  
pp. 1-18
Author(s):  
K. O. Ondoo ◽  
J. K. Kiptoo ◽  
A. O. Onditi ◽  
S. M. Shivaji ◽  
J. K. Ogilo
Keyword(s):  
Heavy Metals ◽  
Surface Runoff ◽  
Anthropogenic Activities ◽  
Contamination Factor ◽  
Water Source ◽  
Pollution Load Index ◽  
Dry Season ◽  
Wet Season ◽  
Flame Atomic Absorption ◽  
Flame Atomic Absorption Spectrophotometer

Agricultural activities, discharge of raw sewage into farms and the rise in urbanization have greatly contributed to soil pollution. During the rainy season, surface runoff from farms find their way into water bodies and deposits these contaminants into Rivers and Lakes which poses a threat to both aquatic and terrestrial organisms that depend on that water source. The objective of this research was to determine the level of anions and heavy metals from sediments in River Sio, Busia County, Kenya. Five sediment samples were taken from five sampling points and the levels of anions and heavy metals in them determined. Anions were determined using Shimadzu 1800 UV/visible spectrophotometer while heavy metals were determined using Shimadzu 6200 flame atomic absorption spectrophotometer (AAS). Copper, lead and nickel were above the allowed WHO limits while cadmium was below detection limit. The levels of nitrates, phosphates and chlorides were higher during the wet season due to surface runoff that carried these nutrients from the farms and deposited them on the bottom of the River. The levels of heavy metals were high during the dry season due to evaporation of water from the River, leading to an increase in the analyte concentration during the dry season. High levels of copper and nickel in the sediments points to the use of herbicides and pesticides in farming and washing of vehicles and motorcycles on the banks of the River. According to Igeo nickel showed moderate pollution during the dry season. The contamination factor for lead was very high during the dry season, while pollution load index confirmed pollution due to anthropogenic activities in sampling sites 1 – 4 during the dry season and no pollution due to anthropogenic activities during the wet season.  The study recommends reduced use of inorganic fertilizers in order to save the River from the danger of eutrophication. Excessive use of agrochemicals such as herbicides and pesticides should be discouraged. In addition, pesticide leaching and the level of microbes in soil and sediments should be considered for further research

scholarly journals Physicochemical Characteristics and Heavy Metals Contents in Soils and Cassava Plants from Farmlands within Nnamdi Azikiwe University, Awka, Anambra State

2021 ◽  
pp. 37-43
Author(s):  
N. P. Udeh ◽  
A. C. Ikegwuonu ◽  
O. A. Okeke ◽  
C. Obudulu ◽  
K. P. Okafor ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Physicochemical Characteristics ◽  
Mean Value ◽  
Soil Samples ◽  
Metal Enrichment ◽  
Metal Concentrations ◽  
Mean Values ◽  
Metal Levels ◽  
The Mean

Soil samples and cassava tubers collected from farmlands within Nnamdi Azikiwe University, Awka vicinity were analyzed for their heavy metal levels using Atomic Absorption Spectrophotometer (AAS) in order to assess their levels of contamination on the environment as a result of excessive fertilizers and automobile emission. Physiochemical properties of the soil samples were determined using standard methods. The soil pH had a mean value of 6.27 ± 0.07, 6.10 ± 0.06 and 6.57 ± 0.03 respectively indicating that the soils were slightly acidic to neutrality. Total organic carbon and nitrate mean values were 105.20 ± 6.20, 95.75 ± 9.57 and 94.6 ± 2.27 and 138.07 ± 12.09, 149.35 ± 14.25 and 149.20 ± 1.17 respectively showing presence of some organic matters. The mean levels of heavy metals in the soil samples were 0.01 ± 0.01, 0.05 ± 0.03 and 0.05 ± 0.03 for lead (Pb), 0.24 ± 0.16, 0.001 ± 0.001 and 0.001 ± 0.000 for cadmium (Cd) and 0.00 ± 0.00, 0.010 ± 0.006 and 0.001 ± 0.001 for chromium (Cr). These metals levels were in the abundance trend of Pb>Cd> Cr. The mean metal concentrations obtained in the cassava tubers respectively were 0.001 ± 0.001, 0.001 ± 0.001 and 0.005 ± 0.005 for lead (Pb), 0.000 ± 0.000, 0.0003 ± 0.0003 and 0.000 ± 0.000 for cadmium (Cd) and 0.002 ± 0.002, 0.000 ± 0.000 and 0.002 ± 0.002 for chromium (Cr). These metals levels were in the abundance trend of Pb> Cr > Cd. For both the soil and cassava samples, there were no significant variations in the heavy metal concentrations and also in physicochemical parameter except for pH; this showed that there is low heavy metal enrichment in the soils studied. Based on the study, the following heavy metals (Pb, Cd, and Cr) falls within the Codex maximum permissible limits 0.1mg/l or ppm expect soil cadmium in science village which is above the Codex limit. The overall results showed that the farmlands (on soils and cassava tuber) appear to be free from poisoning or some metal enrichment and safe for agricultural purposes and also safe for human health and consumption.

scholarly journals Bioakumulasi Logam Berat Pb dan Cu terhadap Penaeus merguiensis di Perairan Teluk Kelabat Bagian Dalam

2019 ◽  
Vol 22 (1) ◽  
pp. 1
Author(s):  
Andini Komalasari ◽  
Budi Afriyansyah ◽  
Muhammad Ihsan ◽  
Mohammad Agung Nugraha
Keyword(s):  
Heavy Metals ◽  
Atomic Absorption ◽  
Bioconcentration Factor ◽  
Sea Water ◽  
Average Concentration ◽  
Atomic Absorption Spectrophotometer ◽  
Average Ability ◽  
Flame Atomic Absorption ◽  
Flame Atomic Absorption Spectrophotometer ◽  
Penaeus Merguiensis

Bioaccumulation of Pb and Cu Heavy Metals to Penaeus merguiensis in the Waters of Inner Kelabat BayThe waters of Kelabat Bay has a wealth of marine resources that is quite important in supporting the economy of Bangka Regency and West Bangka Regency. The purpose of this research was to measure the concentration of heavy metals Pb and Cu (sea water, sediment, and Penaeus merguiensis) and measure the ability of Penaeus merguiensis in accumulating heavy metals Pb and Cu. Heavy metals Pb and Cu in Water, sediments and Penaeus merguiensis analyzed using Flame Atomic Absorption Spectrophotometer (Flame AAS). The results showed that concentration of heavy metals in water with an average range of Pb (0,1042-0,1748 mg/L) and Cu (0,000013-0,000021 mg/L). Average concentration of heavy metals in Pb sediments (7,15-7,73 mg/kg) and Cu (0,0016-0,00219 mg/kg ). Average concentration of Pb heavy metals in Penaeus merguiensis (1,34-1,54 mg/kg) and Cu (0,0003-0,00045 mg/kg). The average ability of Penaeus merguiensis in accumulating heavy metals Pb and Cu is 15,83 to water and 0,19 to sediment. The value of the Bioconcentration Factor is below 250 (FBK <250) so it falls into the low category. Penaeus merguiensis is more exposed to heavy metals dissolved in water than those released from sediment.Perairan Teluk Kelabat memiliki kekayaan sumber daya laut yang cukup penting dalam mendukung perekonomian Kabupaten Bangka dan Kabupaten Bangka Barat. Penelitian ini bertujuan untuk mengukur kandungan logam berat Pb dan Cu (air laut, sedimen, dan Penaeus merguiensis) dan mengukur kemampuan Penaeus merguiensis dalam mengakumulasi logam berat Pb dan Cu. Logam berat Pb dan Cu padaair, sedimen dan Penaeus merguiensisdianalisis menggunakan Flame Atomic Absorption Spectrophotometer (Flame AAS). Hasil penelitian menunjukkan bahwa konsentrasi logam berat dalam air dengan kisaran rata-rata Pb (0,1042-0,1748 mg/L) dan Cu (0,000013-0,000021 mg/L). Kisaran konsentrasi rata-rata logam berat dalam sedimen Pb (7,15-7,73 mg/kg) dan Cu (0,0016-0,00219 mg/kg). Kisaran konsentrasi rata-rata logam berat Pb di Penaeus merguiensis (1,34-1,54 mg/kg) dan Cu (0,0003-0,00045 mg/kg). Kemampuan rata-rata Penaeus merguiensis dalam mengakumulasi logam berat Pb dan Cu yaitu 15,83 terhadap air dan 0,19 terhadap sedimen. Nilai Faktor Biokonsentrasi tersebut di bawah 250 (FBK< 250) sehingga masuk dalam kategori rendah. Penaeus merguiensis lebih banyak terpapar logam berat yang terlarut dalam air daripada yang terlepas dari sedimen. 

Sign in / Sign up

Export Citation Format

Share Document