A study of heavy metal contamination in the Rhondda Fawr, South Wales

Burton, K. W.; John, E.

doi:10.1007/bf00283799

Cited by 30 publications

(12 citation statements)

References 12 publications

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“…The samples were then analysed with respect to total metal analysis, non-residual fraction and exchangeable fraction. The total metal analysis of the soil was done following the method of Burton and John, 1977. The total metal analysis of the soil was done as follows; one gram soil samples were digested in Teflon beakers using a triple acid system of fuming nitric acid (4 ml) hydrofluoric acid (2 ml) and perchloric acid (1 ml). The mixture was heated at 150 o to dryness on a hotplate.…”

Section: Samplingmentioning

confidence: 99%

“…The final residue was dissolved in 0.25M HCl (2.5 ml). The aqueous sample solution was quantitatively transferred to a 25 ml volumetric flask and diluted to volume (Burton and John, 1977). For the analysis of sediment samples, 100g was transferred to the Teflon cup, and 4.0 ml nitric acid (concentrated), 10 ml of perchloric acid (60%) and 6.0ml of hydrofluoric acid (48%) were added.…”

Section: Samplingmentioning

confidence: 99%

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Fractionation of Trace Metals between Catchment Soils and Associated Wetland Sediments of Selected Wetlands of Lake Victoria, East Africa

Henry

Omutange

2010

J. Wetlands Ecol.

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The aim of this work was to study the trace metals transfer between soil aquifers and the immediate sediments of the selected wetlands of Lake Victoria. The study covered five trace metals Pb, Cd, Cu, Zn and Mn as these are associated with vehicular traffic and with the combustion of fossil fuels which could both be significant sources of pollution within the wetlands of Lake Victoria basin. Three types of trace metal analyses from various locations of Katonga, Simiyu and Nyando catchments of Lake Victoria were performed: total concentrations, the concentrations in the non-residual fraction and the concentration in the exchangeable fraction. The soil characteristics: texture, pH and organic matter contents, were studied in relation to Cation Exchange Capacity (CEC) to assess the rate of movement of the metals between the soil and the wetland sediments. Eventually, the potential retention and leaching capacity of trace metals within the catchment soils and its possible impact on the composition of the receiving sediments of the wetlands were studied. The comparison between Nyando and Simiyu wetlands showed high variations in the soil characteristics and hence in leaching capacity of the studied metals. In general most areas in Nyando wetland required some measures to improve the CEC of the soil for higher agricultural productivity.

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Section: Samplingmentioning

confidence: 99%

Section: Samplingmentioning

confidence: 99%

Fractionation of Trace Metals between Catchment Soils and Associated Wetland Sediments of Selected Wetlands of Lake Victoria, East Africa

Henry

Omutange

2010

J. Wetlands Ecol.

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“…This perhaps explains its low level observed in this study. The level of Cd may be increased from wear and tear of automobile tyres (Langerweff & Specht, 1970;Burton & John, 1977). Vanadium was found at appreciable level in the study area.…”

Section: Sources Of Trace Metals In Niger Delta Air Basinmentioning

confidence: 74%

Comparative Study of Levels of Trace Metals in Airborne Particulates in Some Cities of the Niger Delta Region of Nigeria

Uno¹,

Ekpo²,

Etuk³

et al. 2012

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This study measured and compared the levels of trace elements (Pb, Hg, Cr, Ni, V, Cu, Cd, Mn, Fe, Zn, Co, and As) at Aba and Port Harcourt respectively. Paired independent t-test at p ≤ 0.05 (df = 34, n = 36) confirmed significant seasonal variations in the concentrations of the metals with greater concentrations during the dry season. Enrichment factor (EF) analysis was adopted to identify the sources and their contributions to particulate matter. Our results revealed that the background atmosphere in the studied cities was highly affected by anthropogenic pollution, in the order PH > Aba > Eket > Calabar, and demonstrated that high heavy metal concentrations occurred but with significant EF values during the dry season. The present study provides base line information about the region. The results are useful for effective environmental pollution monitoring in the in the Niger Delta air basin.

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“…Standard methods were used in the total metal analysis as described by Burton and John (1977), ie. Digestion of soil and sediments by using a triple acid system of fuming nitric acid (4 ml) hydrofluoric acid (2 ml) and perchloric acid.…”

Section: Identification and Quantificationmentioning

confidence: 99%

Distribution of Metals along Simiyu Wetland of Lake Victoria Basin and its Impact on Agriculture

Henry

Mamboya

2012

J. Wetlands Ecol.

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More than 70% of communities living along Simiyu wetland area are agriculturalists and pastoralists. Physical land degradation and poor nutrient mobility within the soil-plant system have shown a notable impact on agricultural production. Cycling of selected and their impact on agriculture were investigated along Simiyu wetland. Cation Exchange Capacity (CEC) of the soil was studied with respect to soluble cations and selected trace metals. To study the longitudinal and spatial distribution of the selected metals along Simiyu wetland, samples (water, sediments and soil) were taken in three stations along the river namely Bariadi Bridge, Simiyu Bridge and the Simiyu River mouth. Sampling of soil was done at different distances from the river so as to study the flow pattern of the metals and hence to explain the direction of cycling. Sampling was done both inn wet and dry seasons to study the seasonal variation of the metals. Geographical Position System was used to locate the sampling points for soil and water/sediment. Metals Chromium (Cr), Lead (Pb), Zinc (Zn), Coper (Cu), Cadmium (Cd) and Manganese (Mn) analyses were analyzed by atomic absorption spectrophotometer (AAS). High levels of Manganese and Zinc were detected in most samples with different distribution behavior between water and sediments that may reflect difference in solubility of metals in water or possible complex formation of the metals resulting to potentially less solubility of metals, hence retarding their bioavailability to plants low cation exchange capacity. Retarded nutrient mobility in clay soils was observed facilitated by the formation of hard pans resulting to less availability of the nutrients to plants. The study suggests some ways in which farmers can improve soil cation exchange capacity and hence improve agricultural productivity.

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A study of heavy metal contamination in the Rhondda Fawr, South Wales

Cited by 30 publications

References 12 publications

Fractionation of Trace Metals between Catchment Soils and Associated Wetland Sediments of Selected Wetlands of Lake Victoria, East Africa

Fractionation of Trace Metals between Catchment Soils and Associated Wetland Sediments of Selected Wetlands of Lake Victoria, East Africa

Comparative Study of Levels of Trace Metals in Airborne Particulates in Some Cities of the Niger Delta Region of Nigeria

Distribution of Metals along Simiyu Wetland of Lake Victoria Basin and its Impact on Agriculture

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