scholarly journals Seasonal Variation Of Heavy Metals In Sediment And Water Of Lagos Lagoon

2019 ◽  
Author(s):  
Ngozi Oguguah
Keyword(s):  
Heavy Metals ◽  
Surface Water ◽  
Environmental Protection Agency ◽  
Average Concentration ◽  
World Health ◽  
Wet Season ◽  
Run Off ◽  
Lagos Lagoon ◽  
The Mean ◽  
Health Organization

The concentration of Chromium (Cr), Lead (Pb), Zinc (Zn), Cadmium (Cd) and physicochemical parameters were determined in Surface water and Sediment at different stations in Lagos lagoon during the wet season. The result showed that the concentration of Cr 0.039mg/l, Pb 0.043mg/l, Zn 0.107mg/l, Cd 0.17mg/l in surface water were generally low when compared to WHO standard “2004. The concentration of Zn in the water is within the limits permitted by the Lagos State Environmental Protection Agency (LASEPA) of 1.0 mg/L Zn set for water. The mean levels of heavy metals in the sediment of Lagos lagoon were generally low and fell within the acceptable limits described by WHO,2004 and FEPA.The average concentration for the heavy metals were Cr 0.046mg/g, Pb 0.054mg/g, Zn 0.730mg/g, Cd 0.523mg/g respectively. Comparism of these values with that of the surface water indicates that most metals were adsorbed to the sediment. None of the trace metals investigated were above the maximum permissible level set by world health organization (WHO). For the physicochemistry the salinity ranged from 0.0 ‰ to 3.1 ‰ indicating a typical freshwater condition, higher dissolved oxygen were also recorded this may be due to run-off during the wet season.

scholarly journals ENVIRONMENTAL IMPACT ASSESSMENT OF HEAVY METALS EFFLUIENT (CHROMIUM & NICKEL) RELEASED INTO ROMI RIVER, KADUNA STATE: A CASE STUDY

2020 ◽  
Vol 4 (3) ◽  
pp. 704-707
Author(s):  
Muhammad Mudassir Usman ◽  
Muhammad Nuruddeen Abdulkareem ◽  
Abdullahi Muhammad ◽  
Kabiru Hamza
Keyword(s):  
Heavy Metals ◽  
Water Quality ◽  
Industrial Effluents ◽  
World Health ◽  
Refinery Effluent ◽  
Iron Nickel ◽  
The Mean ◽  
Health Organization ◽  
The Impact

Industrial effluents discharged into the river poses a serious threat to our environment; the research examines the impact of some heavy metals of Kaduna refinery effluent into the Romi River. It asserts the nature of effluent released into the water body and also the impact of effluent on water quality. However the important water quality became relatively slowly as early human could only judge water quality through the physical senses of sight, taste and smell, now a days there is an increase of contamination of natural water bodies by industrial effluents in developing and densely populated countries like Nigeria, because rivers are major means of waste disposal and especially effluents from industries nearby. The data used in this research were generated from direct field measurement of pH, Conductivity, and Turbidity, heavy metal profiles (Chromium & Nickel) from Kaduna Refinery Effluent. The mean concentrations of the metals; chromium, iron, nickel, and zinc with the standard deviation were found to be: < 0.01 ± 0.1 mg/kg, and 0.06 ± 0.1 mg/kg. This study has shown that the mean concentration of chromium and Nickel found to be lower than the World Health Organization (WHO) acceptable limits while the concentration values of nickel 0.06 ± 0.1 mg/kg and iron 0.06 ± 0.1 mg/kg as found to be higher than the WHO, acceptable limits of the metals) obtained at the effluent points and this implicate the industry adjacent to the area as one of the sources of heavy metals in the river.

scholarly journals A Study on the Pollution Status of Akata Lake Sediments, Katsina-Ala Benue State, Nigeria

2021 ◽  
pp. 26-31
Author(s):  
Yebpella G.G ◽  
Magomya A.M ◽  
Hikon B.N ◽  
Joshua Y ◽  
Gani J
Keyword(s):  
Heavy Metals ◽  
Pollution Load Index ◽  
World Health ◽  
Pollution Status ◽  
Accumulation Index ◽  
Contaminated Food ◽  
Air Intake ◽  
The Mean ◽  
Health Organization ◽  
Geo Accumulation Index

Heavy metals accumulation in biological system are by inhalation of contaminated air, intake of contaminated food or drinking water has been considered to be an ecological menace to man and other organisms. This study was carried out to ascertain the pollution status of Cr, Pb, Zn, Cu and Cd in sediment of Akata Lake, Katsina- Ala Benue State, Nigeria. Sediment samples were collected, digested using 30% H2O2 followed by 0.5M HCl and the metal concentrations were determined with Varian AA240 Atomic absorption spectrophotometer equipped with Zeeman’s background correction (Varian, New Jersey, USA). The mean level of the heavy metals, Pb, Zn, Cu, Cd and Cr are 31.05, 2.72, 19.22 and 0.88 mg/kg while the concentration of Cr was below the detection limit of the instrument. The values obtained were compared with the established soil and sediment standard by World Health Organization (WHO). The contamination factors value for Zn, Cu and Cd are <1 while that of Pb is >1, hence it shows that the sediment is polluted by lead. The pollution load index (PLI) and Geo-accumulation index (Igeo) levels for Cr, Zn, Cu, Cd heavy metals in sample A - E were less than 1 except for Pb which is >1, this show that, the sediment were polluted with Pb.

Spatio-temporal variation level of heavy metals in surface water and sediment in Tagwai Lake, Minna, Nigeria

2020 ◽  
Vol 29 (1) ◽  
pp. 123-131
Author(s):  
V.I. Chukwuemeka ◽  
E.A. Jimoh ◽  
K.O. Olajide ◽  
Y.I. Auta ◽  
H.S. Auta ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Surface Water ◽  
Anthropogenic Activities ◽  
Absorption Spectrometry ◽  
Average Concentration ◽  
Toxic Heavy Metals ◽  
Water And Sediment ◽  
The Mean ◽  
Spatio Temporal ◽  
Standard Range

The high contamination of aquatic systems with toxic heavy metals is of major concern since the elements are not biodegradable. Heavy metals often get into the water through runoff from farmlands and dumping of effluents from industries into the water bodies. The toxicity of these heavy metals can cause harmful and even lethal effects on the human health. The objective of this study was to investigate the level of Pb, Cu, Mn, and Fe in both surface water and sediment of Tagwai Lake. Atomic Absorption Spectrometry investigation was carried out on the collected and digested water and sediment samples to determine the extent of these heavy metals contamination in the water. The results showed that the average concentration of heavy metals ranked in the following order: Pb>Mn>Cu>Fe with higher concentration in sediment compared to the water. The correspondence of the mean concentrations of heavy metals in water and sediment of the Tagwai Lake with the WHO standard suggests that the mean concentration of Pb, Cu, and Fe lies within the standard range while Mn exceeds the standard range in both the water and sediments. We therefore advocate regular surveillance as a tool for monitoring impacts of anthropogenic activities in the lake to ensure safety of the general populace who depend on it for their livelihood. Keywords: spatio-temporal, heavy metals, sediments, Tagwai Lake

scholarly journals Heavy metals concentration in different processing operational waste water from tannery industry

1970 ◽  
pp. 18-22
Author(s):  
Md Didarul Islam, Ashiqur Rahaman, Aboni Afrose
Keyword(s):  
Waste Water ◽  
Heavy Metals ◽  
Average Concentration ◽  
World Health ◽  
Tannery Effluent ◽  
Tannery Industry ◽  
Atomic Adsorption Spectroscopy ◽  
Wet Ashing ◽  
Aas Method ◽  
Health Organization

An investigation was conducted to assess the concentration of heavy metals from waste water of tannery industry located at Hazaribagh area, Dhaka, Bangladesh. The total contents of Cr, Ca, Na, Zn, Hg, Mn and Ni were determined using Atomic Adsorption Spectroscopy (AAS) method which were followed by a wet ashing Digestion process. Average concentration of those heavy metals obtained from different operational section of Samina tannery industry were found 416.89, 628.03, 235.78, 3.912, 0.054, 20.952 and 3.106 mg/l for Cr, Ca, Na, Zn, Hg, Mn and Ni respectively. As recommended by the World Health Organization, the level of those heavy metals in the tannery effluent from different sections have been found highly contaminated and not suitable for irrigation purpose and harmful for environment.       Note: The pdf full paper of this article will be uploaded soon.      

GROUNDWATER DYNAMICS AND QUALITY UNDER INTENSIVE CROPPING SYSTEMS

1999 ◽  
Vol 35 (2) ◽  
pp. 153-166 ◽  
Author(s):  
R. J. GUMTANG ◽  
M. F. PAMPOLINO ◽  
T. P. TUONG ◽  
D. BUCAO
Keyword(s):  
Nitrogen Fertilizer ◽  
Management Practices ◽  
Cropping Systems ◽  
Sweet Pepper ◽  
Service Area ◽  
World Health ◽  
Wet Season ◽  
Groundwater Dynamics ◽  
The Mean ◽  
Health Organization

A study was conducted from October 1994 to March 1996 to assess groundwater dynamics and quality in relation to landuse and farm input of nitrogen fertilizer in a highly diversified and intensive agricultural area at Magnuang, Batac, Ilocos Norte. Monthly groundwater depths, nitrate-nitrogen (NO3-N), chloride (Cl−), bicarbonate (HCO3−), electrical conductivity (EC) and pH were determined in 19 agricultural and domestic wells. In the dry season, sweet pepper (Capsicum annuum) had a higher irrigation requirement and caused more groundwater level decline than other crops. EC (700–3000 μmho cm−1) and HCO3− (90–500 ppm) in all wells exceeded the FAO threshold quality for irrigation but were not related to farm management practices. Eight wells showed near or above the World Health Organization NO3-N limit (10 ppm) for drinking water. High nitrogen fertilizer input increased the mean NO3-N (r2 = 0.45, p < 0.002). The percentage of the wells' service area under rice cultivation in the wet season accounted for 84% (p < 0.001) of the variation in NO3-N among the wells. The mean NO3-N declined as the percentage of service area under rice increased. This was related to the denitrification process in the flooded fields and the lower levels of nitrogen fertilizer for rice compared with other crops.

scholarly journals Assessment of Some Heavy Metals and Physico-Chemical Parameters of Surface Water of Matara-Uku Wetlands

2020 ◽  
pp. 1-12
Author(s):  
Abbas Umar Haruna ◽  
Yahaya Abdullahi Muhammad ◽  
Zaharaddeen Muhammad ◽  
Misbahu Said Ahmad ◽  
Fatima Abdullahi Goje ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Surface Water ◽  
World Health Organization ◽  
Water Samples ◽  
Permissible Limit ◽  
World Health ◽  
Maximum Contaminant Level ◽  
Contaminant Level ◽  
Health Organization ◽  
Mean Concentration

The study assessed the levels of Nitrogen, Phosphorous and some heavy metals in Matara-Uku wetland. Twenty water samples were collected from surface water of Matara-Uku using polyethene plastic container, the physicochemical parameters of the samples were measured and the samples were analyzed for Nitrogen, Phosphorous and heavy metals. Results from physicochemical analysis are obtained as; pH (7.6 – 8.0), total dissolve solid (70.82 - 84.26 mg/l), electric conductivity (105.0 – 163.0 μs/cm) and temperature (24.4 – 25.4ºC). All the results are in line with World Health Organization standard of 6.5 - 8.5, <600 mg/l, 400 μs/cm and ambient temperature respectively.  The Nitrogen and phosphorous were analyzed using UV- Visible spectrophotometer. From the results, it was found that all the samples had Nitrogen level below the World Health Organization maximum contaminant level of 10 mg/L with a mean concentration range (0.2293 ± 0.0057) mg/L to (2.2455 ± 0.0216) mg/L. Phosphorus was also analyzed and the results indicated that all the sampling sites had phosphorus level above the WHO maximum contaminant level of 0.03 mg/L with a mean concentration range (3.8208 ± 0.4109) mg/L to (4.56 ± 0.1325) mg/L. The water samples were digested using concentrated HCl and HNO3, in which the digested samples were used for heavy metals analysis using Atomic Absorption Spectrophotometer (AAS). The mean concentrations of the heavy metals analyzed were between the ranges Pb (0.1272 ± 0.0445) mg/L to (0.2727 ± 0.1285) mg/L, Cd (0.0026 ± 0.0024) mg/L to (0.0053 ± 0.0054) mg/L and Ni (0.0705 ± 0.0235) mg/L to (0.1411 ± 0.0819) mg/L respectively. Concentrations of Cd and Ni are generally below the maximum permissible limit of 0.03 mg/L and 0.02 mg/L, whereas concentrations of Pb exceeded the maximum permissible limit of 0.01 mg/L for surface water. It was concluded that the surface water of Matara-Uku is polluted with respect to Pb, which is known to bio-accumulate and even undergo bio-magnification in organisms such as fishes and even plants with serious health implications to human being.

scholarly journals Toxic Levels of Some Heavy Metals in Drinking Network Surface Water of Damietta Governorate, Egypt

2016 ◽  
Author(s):  
M. S. M. EL-Bady
Keyword(s):  
Water Pollution ◽  
Heavy Metals ◽  
Drinking Water ◽  
Surface Water ◽  
World Health Organization ◽  
World Health ◽  
Permissible Limits ◽  
Health Organization

Abstract. In this paper, the heavy metals of the surface drinking water of Damietta governorate were evaluated. Damietta district, Farascore City, EL-Zarka City and Kafr Saad City are the main locations of drinking water pollution. The villages of the Damietta governorate have concentration values less than the permissible limits of World Health Organization (WHO) and Egyptian Ministry Health (EMH).

scholarly journals Distribution and Risk Assessment of Heavy Metals in Surface Water from Pristine Environments and Major Mining Areas in Ghana

2015 ◽  
Vol 5 (9) ◽  
pp. 86-99 ◽  
Author(s):  
George Yaw Hadzi ◽  
David Kofi Essumang ◽  
Joseph Kwaku Adjei
Keyword(s):  
Heavy Metals ◽  
Risk Assessment ◽  
Surface Water ◽  
Environmental Protection Agency ◽  
Daily Intake ◽  
Industrial Effluent ◽  
World Health ◽  
Dermal Contact ◽  
Mining Sites ◽  
Mining Areas

Background. Ghana, like many countries in Africa, has a history of heavy metal pollution largely emanating from industrial effluent discharges and anthropogenic deposits on prevailing winds of pollutants from industrial activities. One of the biggest contributors to pollution in the Ghanaian environment is mineral mining. Objectives. The aim of this study was to determine the distribution and health risks of heavy metals in surface water from both pristine environments and major mining areas in Ghana. Methods. A total of 32 composite samples were collected between September and October, 2014 to assess concentrations of heavy metals and pollution levels, as well as cancer and non-cancer risks to human health from exposure to heavy metals from four major mining regions and four rain forest reserves in the Western, Ashanti, Brong Ahafo and Eastern regions of Ghana. Samples were analyzed using atomic absorption spectrometry. Results. The mean concentrations (mg/L) of heavy metals at the pristine sites ranged from 1.747 for iron (Fe) to 0.001 for mercury (Hg) and 0.453 for Fe to 0.002 for Hg at the mining sites. All the metals were found to be below World Health Organization (WHO) and United States Environmental Protection Agency (USEPA) recommended limits except for Hg, which was at the USEPA guideline limit. However, the concentrations of the metals from the mining sites were found to be slightly higher than those from the pristine sites. Conclusions. The concentrations of heavy metals in the Nyam, Subri, Bonsa and Birim Rivers from the mining sites and the Atiwa Range, Oda, Ankasa and Bosomkese Rivers from the pristine sites were found to be either below or within the USEPA and WHO's recommended limits for surface water. The health risk assessment values for the hazard quotient for ingestion of water (HQing), dermal contact (HQderm) and chronic daily intake (CDI) indicated no adverse effects as a result of ingestion or dermal contact from the rivers. However, arsenic (As) in both the pristine and mining sites and chromium (Cr) in the pristine sites pose a carcinogenic threat to the local residents.

scholarly journals Assessment of Surface Water Contamination by Heavy Metals Due to Agricultural Practices in the Northern Part of Burkina Faso

2020 ◽  
pp. 85-98
Author(s):  
Stéphanie Batchakoue- Maïga Yaleu ◽  
Abitalib Djibo Hahiou ◽  
Boubié Guel
Keyword(s):  
Heavy Metals ◽  
Surface Water ◽  
Water Body ◽  
Water Samples ◽  
Microwave Plasma ◽  
Agricultural Practices ◽  
Atomic Emission ◽  
Absorption Capacity ◽  
World Health ◽  
Health Organization

Aims: The purpose of this study was to assess the status of the heavy metals As, Cd, Pb, Mn and Zn in the surface water of the Sub-catchment Barrage of Tougou for which water comes mainly from agricultural activities. Place and Duration of Study: A total of 73 water samples were taken at the inflow of the water body and at several points located on the water body, from August to October 2019. Methodology: Water samples were characterized for temperature, pH, electrical conductivity (EC), sulfate (SO42-), nitrate (NO3-) and phosphate (PO43-). Heavy metals were analyzed using a microwave plasma atomic emission spectrometer (MP-AES), Agilent Model 4210. Results: The EC range was between 27.45 and 53.90 µS/cm with an average pH of 6.4. Nitrate (NO3-) was the most abundant anion in the water (39.70 mg / L) and phosphates (PO43-) were present in very small quantities (0.34 mg / L). The results showed very low concentrations of Pb and Cd, below 5 µg / L and below 2 µg / L, respectively. The concentrations of As, Mn and Zn in the water were 2.8 µg / L, 13.2 µg / L and 9.8 µg / L, respectively. Agricultural practices do not have a significant effect on surface waters. The concentrations of heavy metals analyzed in the water were lower than the standards established by the World Health Organization for drinking water quality. Conclusion: This information, certainly important, does not allow us to conclude on the risk of the consumption of this water on human health. Further studies should be conducted on this water body to evaluate the potential risk for public health and to examine the concentrations of heavy metals in the sediments, because it is known that sediments have a high absorption capacity for heavy metals and are then considered the main target for water purification related to heavy metals.

scholarly journals Heavy Metals Concentrations in Five Brands of Lip Gloss and Mascara Cosmetics Sold and Used in Calabar, Cross River State, Nigeria

2020 ◽  
Vol 24 (7) ◽  
pp. 1223-1227
Author(s):  
M.A. Akpe ◽  
R.C. Anozie ◽  
F.P. Inezi
Keyword(s):  
Heavy Metals ◽  
Average Concentration ◽  
World Health ◽  
Toxic Heavy Metals ◽  
Scientific Model ◽  
Cross River ◽  
Cross River State ◽  
A Value ◽  
The World ◽  
Health Organization

This study is evaluated the concentration of some toxic heavy metals present in selected cosmetics sold and used in Calabar, Cross River State, Nigeriausing aFlame Atomic Absorption Spectrophotometer (AAS), VGP 210 (BUCK Scientific) Model. The result revealed that the average  concentration of the metals in mg/L ranged thus: Cadmium (0.012- 0.046), Chromium (0.002- 0.022), Lead (0.004- 0.024) and Nickel (0.140- 0.416). The concentration of Arsenic and Mercury was not detected, and were considered string variables in this study. From the results, the concentration of the metals detected were within the permissible limit of the World Health Organization (WHO) except Cadmium that was slightly above the WHO limit in one of the samples with a value of 0.046 mg/L. These results indicate that the selected cosmetics used in Calabar contains low amounts of the heavy metals analyzed in this study and may not pose any health risk for now, except that the accumulation of such little amounts over timedue to prolonged use of these cosmetics may cause harm. Keywords: Concentration, Heavy metals, Cosmetics, Calabar

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