The solid state partitioning of contaminant metals and As in river channel sediments of the mining affected Tisa drainage basin, northwestern Romania and eastern Hungary

Abstract

The solid state partitioning of metals and As in river channel sediments has been investigated along an 828 km study reach comprising the rivers Lapuş, Someş and Tisa, using a 4-stage sequential extraction procedure (SEP) that identified 4 chemical phases: (1) exchangeable, (2) Fe and Mn oxides, (3) organic matter/sulphides and (4) residual. Peak total concentrations of As (240 mg kg−1), Cd (95 mg kg−1), Cu (24,500 mg kg−1) and Pb (21,100 mg kg−1) were found in the River Lapuş immediately downstream of Băiuţ base-metal mine, with Zn concentrations (23,000 mg kg−1) peaking 2 km further downstream. Contaminant metals and As within samples close to Băiuţ mine were largely bound to sulphides (>92%). Ten km downstream from Băiuţ mine, however, Cd and Zn were found to be environmentally significant due to their strong association with the exchangeable phase (73 and 47%, respectively). Lead was found to be predominantly associated with Fe and Mn oxides (71%), but concentrations in the residual phase were relatively high in the upper Tisa. Copper was more evenly distributed between the 4 phases than the other 4 elements analysed. Elevated metal and As concentrations were found in the rivers Lapuş and Someş downstream of polluted tributaries, but sites on the River Tisa had total metal concentrations below Dutch guideline values. The implications of the river sediment metal partitioning results on the environment are considered in light of Cd and Zn ‘exchangeable hotspots’ at sites on the Lapuş and Someş Rivers

Effects of Anthropogenic Activities on the Elemental Concentration in Surface Sediment of Oxbows

“…Compared to our results with earlier studies about elemental concentration in different river surface sediment, our study indicated the moderate level of pollution in the Upper Tisza region. Bird et al (2003) ) was higher in the surface sediment than our findings (Bird et al 2003). Vystavna et al (2012) ), and in the case of Velke Kozmalovce, the Pb concentration was lower 66±8 mg kg −1 compared to our results.…”

The Study Of Physico- Chemical And Bacteriological Parameters Of River Salandi And Assessment Of Water Quality Index From Hadagada Dam To Akhandalmani, Bhadrak, Odisha, India

“…But earlier report of pollution control Board reveals that they have discharge the effluents of high concentration of Chromium to the river Salandi [18]. Although, at present, some chromite mines are not running, but the mining effluents left by them earlier without proper treatment has resulted open exposure of chromite mixed soil to the atmosphere and pollute the river Salandi with chromium through atmospheric rain precipitations as river Salandi is the only natural drainage system in the study area [5,9,30,47,54,68,69]. Hence more concentration of Cr 6+ is found from Bidyadharpur to Baudpur in the month of August and October is due to entry of mining discharges, industrial discharges [17], agricultural effluents, atmospheric rain precipitation and geology of river bed and catchment area [29,67].…”

Research on the surface water quality in mining influenced area in north-western part of Romania

“…Major attention was given to the mining impact on the quality of water, and the content in heavy metals (cadmium, lead, copper, manganese, zinc, iron, arsenic etc) using various investigation techniques (Bird, et al, 2003;Macklin, et al, 2006;Kraft, et al, 2006;Roman, et al, 2008).…”