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Trace metal

About: Trace metal is a research topic. Over the lifetime, 5125 publications have been published within this topic receiving 181046 citations.


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Journal ArticleDOI
TL;DR: The moss Bryum radiculosum (Brid.), a species typical of dry and coastal environments, was used as a bioindicator for the estimation of atmospheric trace metal deposition around the industrial site of Portoscuso (Sardinia, Italy), which includes a lead-zinc smelter, two power plants, and aluminium production factories.

58 citations

Journal ArticleDOI
TL;DR: PDTA had the highest stability constants for Cu(2+) and Ni(2+) and the highest overall selectivity for trace metals over major cations and BDTA was the least effective extractant because its stability constants with heavy metals were low.

58 citations

Journal ArticleDOI
TL;DR: Raised bioavailabilities of zinc, cadmium, lead, iron and manganese are present, particularly in the middle region of the Thames investigated, downstream of the effluent discharges of the sewage works at Beckton and Crossness.
Abstract: This study employed a suite of three biomonitors to investigate trace metal pollution in the Thames estuary, a region of significant clean-up of contaminants and the cumulative return of fauna and flora over the last two decades. The biomonitors chosen are the brown seaweed Fucus vesiculosus (bladder wrack), the barnacle Balanus improvisus and the talitrid amphipod crustacean Orchestia gammarellus, in order to obtain data on the bioavailabilities of Zn, Cu, Cd, Pb, Fe, Ag and Mn in the Thames estuary in 2001, as a basis for future comparisons as pollution is further reduced in the Thames. Accumulated metal concentrations in these organisms represent integrated records of the total bioavailabilities of the metals to that organism at that location over a previous time period, and comparisons of accumulated concentrations in a biomonitor between sites are indeed comparisons of the recent contaminant bioavailabilities to that biomonitor. All three biomonitors showed geographical differences in trace metal bioavailabilities along the Thames estuary. There was general agreement in the conclusions to be drawn from each of the three species used. Raised bioavailabilities of zinc, cadmium, lead, iron and manganese are present, particularly in the middle region of the Thames investigated, downstream of the effluent discharges of the sewage works at Beckton and Crossness.

58 citations

01 Jan 2011
TL;DR: Aqueous Cadmium Removal by Adsorption on Barley Hull and Barley hull Ash has been shown to be an economically feasible alternative method for removing trace metal from wastewater and water supplies as mentioned in this paper.
Abstract: The contamination of water by toxic heavy metals through the discharge of industrial, mining and agricultural wastewaters is a worldwide environmental problem. Metals can be distinguished from other toxic pollutants, since they are non-biodegradable and can accumulate in living tissues, thus becoming concentrated throughout the food chain. Cadmium is a highly toxic element affecting the environment. Excessive human intake of Cd leads to damage of kidney and renal system, skeletal deformation (Itai-itai), cardiovascular diseases and hypertension. Severe gastrointestinal irritation, muscular pain, anemia, teeth discoloration, loss of smell and possible necrotic changes in the liver and kidney can also occur. Cadmium is also known carcinogen. The treatment of cadmium contaminated water is similar to that of many metal contaminated effluents. The main techniques, which have been utilized to reduce the heavy metal ion content of effluents, include chemical precipitation, coagulation, lime precipitation, solvent extraction, electrolytic processes, membrane separation, ion-exchange and adsorption. In the last few years, adsorption has been shown to be an economically feasible alternative method for removing trace metal from wastewater and water supplies. Activated carbon Aqueous Cadmium Removal by Adsorption on Barley Hull and Barley Hull Ash

58 citations

Journal ArticleDOI
TL;DR: The sampling sites characterized by the highest values of biotic indices were located far from the port areas and present an epiphytic and epifaunal biocoenosis.

58 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202394
2022225
2021197
2020220
2019193
2018186