scholarly journals Determination of Selected Heavy Metals in Tobacco Tree Shrubs Growing around Dandora Dumpsite, Nairobi, Kenya

2019 ◽  
pp. 1-9
Author(s):  
P. M. Kahara ◽  
J. Murungi ◽  
J. K. Kiptoo ◽  
G. Nyaga
Keyword(s):  
Heavy Metals ◽  
Total Concentration ◽  
Pearson Correlation ◽  
World Health ◽  
Loading Path ◽  
Flame Atomic Absorption Spectroscopy ◽  
Flame Atomic Absorption ◽  
Top Soil ◽  
Health Organization

Environmental pollution by heavy metals is presently a serious threat to public health. Despite the toxic contaminants contained in municipal waste, most of the dumpsites remain unregulated and uncontrolled. The objective of this study was to determine the levels of Pb, Cr and Cd in the leaves of tobacco tree plants growing around the dumpsite so as to assess their impact on the environment. The pseudo-total concentration of the metals in the soil was done so as to calculate the transfer factors.pH and total organic carbon (TOC) of the soil was also determined. Soil and plant samples were collected thrice from thirty two sampling sites along the off-loading path from the centre of Dandora dumpsite up to a distance of 700 m away from the centre at depth of 0-30cm (top soil).  Metal analysis was done using flame atomic absorption spectroscopy (FAAS). Pb levels ranged from 7.58±0.34 to 16.57±0.79 µg/g in the washed leaves and 9.22±0.36 to 19.27±0.40 µg/g in the unwashed leaves. Cr levels ranged from 5.11±0.40 to 14.4±0.91 µg/g in the washed leaves and 5.01±0.45 to 15.50±0.40 µg/g in the unwashed leaves. While Cd levels ranged from 0.24±0.01 to 3.62 ±0.17 µg/g in the washed leaves and 0.37±0.02 to 3.68±0.25 µg/g in the unwashed leaves. All these levels were above World Health Organization recommended limits in plants of Pb (0.3 µg/g), Cr (3 µg/g) and Cd (0.2 µg/g). Pearson correlation of the levels in the plants with their concentrations in the soils gave significantly positive values. This suggest that high metal concentration in the soil leads to increased mobility and hence bioavailability. Results obtained therefore suggest that Dandora dumpsite is highly polluted and people should be discouraged from using waste from the dumpsite as manure.

scholarly journals HEAVY METAL CONTENT IN SOME SEAFOODS COLLECTED FROM MUARA ANGKE FISH AUCTION PLACE, JAKARTA.

1987 ◽  
Vol 26 ◽  
pp. 51-58
Author(s):  
Horas Hutagalung ◽  
Suwirma Syamsu
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Metal Content ◽  
Heavy Metal Content ◽  
World Health ◽  
Human Consumption ◽  
Zn Content ◽  
Standard Set ◽  
Health Organization

Determination of  heavy  metal  content  (Hg, Pb, Cd, Cu, Cr, Zn) in some seafoods collected from  Muara  Angke  Fish  Auction  Place  were carried out during February to July 1979. The results showed  that Zn  content  in seafoods a nalyzed  was always much higher than the other heavy metals. The concentration levels of  the  six  heavy  metals observed were low. It is almost of the same level as the metal concentration of  other  seafoods  observed  in various parts of the world oceans, but still lower  than the maximum standard set  for human  consumption  as  established  by   Tasmania, Australia and  World Health Organization. The  mean  per capita  consumption of  fish  in Jakarta is only  about 165 g  per week, while  the  Provisional Tolerated Weekly Intake for Hg, set by WHO/FAO at 300 ug level, would be attained by consuming 1500 g Rastrelliger sp., or 698 gPenaeus setiferus, or 545 g Sepia sp., and or 1250 g Pecten sp.  Therefore,  at   present the  level of metal content in fishes sold at TPI  Muara  Angke  can be  considered  as  not  dangerous  to human health as long as these quantities are not surpassed.

scholarly journals HEAVY METAL CONTENT IN SOME SEAFOODS COLLECTED FROM MUARA ANGKE FISH AUCTION PLACE, JAKARTA.

1987 ◽  
Vol 26 (1) ◽  
pp. 51 ◽  
Author(s):  
Horas Hutagalung ◽  
Suwirma Syamsu
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Metal Content ◽  
Heavy Metal Content ◽  
World Health ◽  
Human Consumption ◽  
Zn Content ◽  
Standard Set ◽  
Health Organization

Determination of  heavy  metal  content  (Hg, Pb, Cd, Cu, Cr, Zn) in some seafoods collected from  Muara  Angke  Fish  Auction  Place  were carried out during February to July 1979. The results showed  that Zn  content  in seafoods a nalyzed  was always much higher than the other heavy metals. The concentration levels of  the  six  heavy  metals observed were low. It is almost of the same level as the metal concentration of  other  seafoods  observed  in various parts of the world oceans, but still lower  than the maximum standard set  for human  consumption  as  established  by   Tasmania, Australia and  World Health Organization. The  mean  per capita  consumption of  fish  in Jakarta is only  about 165 g  per week, while  the  Provisional Tolerated Weekly Intake for Hg, set by WHO/FAO at 300 ug level, would be attained by consuming 1500 g Rastrelliger sp., or 698 gPenaeus setiferus, or 545 g Sepia sp., and or 1250 g Pecten sp.  Therefore,  at   present the  level of metal content in fishes sold at TPI  Muara  Angke  can be  considered  as  not  dangerous  to human health as long as these quantities are not surpassed.

scholarly journals Assessment of Selected Heavy Metals Levels In Borehole Water In Ongata Rongai, Kajiado County, Kenya.

2020 ◽  
pp. 09-15
Keyword(s):  
Heavy Metals ◽  
Atomic Absorption ◽  
Human Health ◽  
Absorption Spectroscopy ◽  
Atomic Absorption Spectroscopy ◽  
World Health ◽  
Flame Atomic Absorption Spectroscopy ◽  
Flame Atomic Absorption ◽  
Metal Levels ◽  
Borehole Water

The study was carried out to assess the levels of heavy metals in ground water sampled from ten selected borehole sites in Ongata Rongai town, Kajiado County. The levels of selected heavy metals analyzed were: Zinc, Lead, Mercury, Manganese, Cadmium and Chromium in dry and wet seasons the analysis was done by Flame Atomic Absorption Spectroscopy. Seasonal variation was considered as an aspect of pollution to the subsurface environment where there was no obvious observable environmental degradation or where unknown contaminants could have been disposed of, privately, without any matrix being charged. The analysis of water samples was done using Flame Atomic Absorption Spectroscopy and the results for the metal levels were in the range of: Zinc Below Detectable Limits- 0.73±0.01 (mgl-1 ); lead 0.21±0.01- 0.33±0.01 (mgl-1 ), mercury 0.0010 ± 0.0001 - 0.0019±0.0001(mgl-1 ); 0.256±0.01 (mgl-1 ); manganese 0.03±0.01- 0.26±0.01 (mgl-1 ). Cadmium and chromium had levels below detectable limits in dry and wet seasons. The levels of zinc and manganese were higher in the dry season than those recommended by World Health Organization of 3.0mgl-1 and 0.01mgl-1 respectively. The presence of the heavy metals in the borehole water is of concern since they could impact negatively on human health even at low levels due their accumulation. Stringent management and public awareness are required in order to safeguard the environment and human health in Ongata Rongai town.

scholarly journals Assessment of some heavy metals concentrations in soil and groundwater around refuse dumpsite in Ibadan Metropolis, Nigeria

2020 ◽  
Vol 39 (1) ◽  
pp. 301-305
Author(s):  
I.O. Saheed ◽  
S.O. Azeez ◽  
A.A. Jimoh ◽  
V.A. Obaro ◽  
S.A. Adepoju
Keyword(s):  
Heavy Metals ◽  
Ground Water ◽  
Atomic Absorption Spectrophotometry ◽  
Soil Samples ◽  
World Health ◽  
Heavy Metal Concentrations ◽  
Absorption Spectrophotometry ◽  
Dug Wells ◽  
Health Organization

This study reports the determination of some heavy metals’ concentration in soil and groundwater around refuse dumpsites in five locations in Ibadan Metropolis, Nigeria. Five samples were collected from each soil and ground water locations and analysed for heavy metals(Cd, Co, Pb, Cr, Zn, Mn and Ni)using Atomic Absorption Spectrophotometry. The soil samples were obtained in triplicates at 25cm depth intervals whereas the water samples were obtained from hand dug wells less than 10 m deep. The range of the values of heavy metal concentrations obtained in water is Co (0.01-0.04), Pb (0.01-0.02), Cr (0.02-0.05), Zn (0.40-0.70), Mn (0.02-0.05) and Ni (0.02-0.05), but Cadmium was not detected. The concentrations of Pb and Ni in ground water obtained from Arapaja, Aleshinloye and Alafara were higher than the World Health Organization (WHO) and Standard Organisation of Nigeria (SON) limits. The results obtained showed that the concentrations of Cd, Co, Pb, Ni and Cr in soil exceeded the WHO and SON permissible limits. However, Zn and Mn were below the limit. Keywords: Heavy metals, Dumpsite, Groundwater, Soil samples, Concentrations.

scholarly journals Determination of heavy metals and organochlorine pesticides in the leaves and flowers from linden trees in Kırklareli province

2018 ◽  
Vol 1 (4) ◽  
Author(s):  
Osman Üner ◽  
Cihan Torlak ◽  
Cemile Özcan
Keyword(s):  
Heavy Metals ◽  
Residue Level ◽  
Quechers Method ◽  
Flame Atomic Absorption Spectroscopy ◽  
Flame Atomic Absorption ◽  
Maximum Residue Level ◽  
Gas Chromatography Mass Spectroscopy ◽  
Tilia Tomentosa ◽  
Organochloride Pesticides

For five different regions in Kırklareli province, heavy metals; such as Pb, Ni, Cu, Mn, Cd, Cr, Co, Zn, Mo, and Fe in the mixture of leaves and flowers from linden trees (Tilia tomentosa L.) were analyzed by using flame atomic absorption spectroscopy after the samples were dissolved with microwave method. Also, organochloride pesticides; such as ∑BHC: [α-BHC, β-BHC, γ-BHC, and δ-BHC], ∑DDT: [4,4’-DDD, 4,4’-DDE, and 4,4’-DDT], α-Endosulfan, β-Endosulfan, Endosulfan sulfate, Heptachlor, Heptachlor-endo-epoxide, Aldrin, Dieldrin, Endrin aldehyde, Endrin ketone, Endrin and Methoxychlor in these samples were determined by utilizing gas chromatography mass spectroscopy after the samples were prepared for analyses by using QuEChERS method. The metal concentrations in the samples were in the range of 45.3 to 268 mg/kg for Mn, 0.25 to 18.8 mg/kg for Cu, 11.5 to 46.1 mg/kg for Zn, 128 to 1310 mg/kg for Fe, 10.4 to 38.6 mg/kg for Mo, 0.82 to 1.34 mg/kg for Cd, 0 to 6.45 mg/kg for Ni, 0 to 19.2 mg/kg for Pb, and 0 to 8.25 mg/kg for Cr. Moreover, the concentrations of organochloride pesticides in samples were usually determined to be lower than their maximum residue level values given the pesticide residue limit regulation of Turkish Food Codex. 

scholarly journals Determination of Iron, Copper and Zinc in the Wine by FAAS

2020 ◽  
Vol 4 (5) ◽  
pp. 411-417
Author(s):  
Valon Ylvi Durguti ◽  
Suzana Aliu ◽  
Fisnik Laha ◽  
Fidan Feka
Keyword(s):  
Heavy Metals ◽  
Human Health ◽  
White Wine ◽  
Wine Quality ◽  
Flame Atomic Absorption Spectroscopy ◽  
Analytical Technique ◽  
Eu Directive ◽  
Flame Atomic Absorption ◽  
The Eu

Objectives: The purpose of this paper has been to determine quantitatively the presence of some heavy metals (Fe, Cu and Zn) which are of particular importance for the wine quality and human health. A total of 41 samples have been analyzed during different stages of winemaking. Methods: The determination of heavy metals is done by analytical technique known as Flame Atomic Absorption Spectroscopy (FAAS). The limit set by the EU directive EC 606/2009 and International Office of Vine and Wine (OIV) has been taken as reference values. Results and Discussion: None of the analyzed samples has exceeded the limits set by the EU and OIV, excluding the type of white wine known as Rhine Riesling. In this sample the Cu concentration exceeds several times the permissible values. Findings: It has been observed that heavy metals immediately after the alcoholic fermentation process probably continue to remain even for a while in the upper part until wine sediment forms at the bottom of the tank. A higher concentration of heavy metals was observed in the samples taken from the bottom of the wine tank. Conclusion: The analyzed wines samples do not pose a risk in the future to human health. Doi: 10.28991/esj-2020-01240 Full Text: PDF

scholarly journals Assessment of Some Heavy Metals in Two Species of Goby (Porogobius Schelegelii and Bathygobius Soporator) From Buguma Creek, Niger Delta

2021 ◽  
pp. 46-51
Author(s):  
Wilfred–Ekprikpo P. C.
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
World Health ◽  
High Concentration ◽  
Metal Concentrations ◽  
Heavy Metal Concentrations ◽  
Flame Atomic Absorption ◽  
Flame Atomic Absorption Spectrophotometer ◽  
Fish Samples ◽  
Health Organization

This study investigated the heavy metal concentrations in different organs such as gills, muscles, liver and gatro-intestinal tract (GIT) of two species of Goby: Porogobius schelegelii and Bathygobius soporator from Buguma Creek, Rivers State, Nigeria. The fish samples were collected from the creek and were preserved in ice chest box and transported to the laboratory for analysis. Samples were digested by using standard laboratory methods. The concentrations of metals were analyzed using a Varian AA240 Fast Sequential Flame Atomic Absorption Spectrophotometer (AAS). The Results obtained indicated that heavy metals such as Chromium (Cr), Lead (Pb), Zinc (Zn), Cadmium (Cd), and Nickel (Ni) were significantly higher (p<0.05) in the liver of the two species than in the muscle, gills and the GIT. Comparatively, the concentrations of these metals were higher in the specie B.soporator than P. schelegelii in all the organs of the fishes under consideration. The heavy metal concentrations recorded in this study were above the limits recommended by Food and Agricultural Organization/ World Health Organization. The high concentration of heavy metals above permissible level suggests the need for caution during the consumption of these species from Buguma Creek due to health implications associated with heavy metals.

scholarly journals The Assessment of The Effect of Proximity of Septic Tanks on The Levels of Selected Heavy Metals in Borehole Water from Ongata Rongai, Kajiado County, Kenya

2020 ◽  
pp. 64-76
Author(s):  
N. K. Ochiba ◽  
D. A. Abong'o ◽  
J.O. Onyatta
Keyword(s):  
Heavy Metals ◽  
World Health ◽  
Septic Tanks ◽  
Flame Atomic Absorption ◽  
Body Tissues ◽  
Groundwater Samples ◽  
Guideline Values ◽  
Metal Levels ◽  
Borehole Water ◽  
Health Organization

The study was carried out to evaluate the levels of heavy metals in groundwater samples from ten selected boreholes in Ongata Rongai town, Kajiado County. The selected heavy metals analyzed were: Zn, Pb, Hg, Mn, Cd and Cr in the dry and wet seasons. The effect of the proximity of septic tanks distance to borehole was also determined. The statistical analyses of the data using a 2-way ANOVA showed 95% confidence level (p<0.05) interdependence of the distance from the boreholes and contaminant levels. The study showed that heavy metals were below the maximum recommended level and the guideline values of World Health Organization and Kenya Bureau of Standards. The analyses of the selected heavy metals, by Flame Atomic Absorption Spectroscopy, revealed that the detected levels of Mn (0.03±0.01 - 0.26±0.01 mgl-1) were higher than those recommended by WHO and KEBS of 0.01 mgl-1, while Zn (0.11±0.02 - 0.73±0.01 mgl-1) are within acceptable levels of WHO (3.0 mgl-1) and KEBS (5.0 mgl-1). There was no strong correlation between the distance of borehole from septic tanks and heavy metal levels in water samples. The low detected values should not be overlooked as the heavy metals are capable of bio-accumulating in body tissues.

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