Details

Autor(en) / Beteiligte

• Squadrone, S.
• Burioli, E.
• Monaco, G.
• Koya, M.K.
• Prearo, M.
• Gennero, S.
• Dominici, A.
• Abete, M.C.

Titel

Human exposure to metals due to consumption of fish from an artificial lake basin close to an active mining area in Katanga (D.R. Congo)

Ist Teil von

• The Science of the total environment, 2016-10, Vol.568, p.679-684

Ort / Verlag

Netherlands: Elsevier B.V

Erscheinungsjahr

2016

Link zum Volltext

Quelle

MEDLINE

Beschreibungen/Notizen

• The concentrations of 14 essential and nonessential trace elements were determined in fish from Lake Tshangalele, Katanga province, Democratic Republic of Congo. This province has been a place of intensive mining activities for centuries, which have increased in recent years, due to the use of metals such as copper and cobalt for the industries of fast-growing countries. Lake Tshangalele, which receives effluents from metallurgical and mining plants in Likasi, is home to several fish species that are an important part of the diet of the local population, and, therefore, it constitutes a relevant site for documenting the human exposure to metals as a result of a fish diet. The highest concentrations (median levels, dry weight) of cobalt (7.25mgkg−1), copper (88.1mgkg−1), iron (197.5mgkg−1), manganese (65.35mgkg−1), zinc (122.9mgkg−1) and aluminum (135.4mgkg−1) were found in fish collected closest to the copper mining plant, with decreasing concentrations along the lake, up to the dam. In the most contaminated fish samples, values of up to 270.1mgkg−1 for Al, 173.1mgkg−1 for Cu, 220.9mgkg−1 for Zn, 211.0mgkg−1 for Mn, 324.2mgkg−1 for Fe, 15.1mgkg−1 for Co, 4.2mgkg−1 for Cr, 1.6mgkg−1 for Cd, 1.9mgkg−1 for Pb, and 1.8mgkg−1 for Ni were found. Metal contamination from mining activity resulted in being of great concern because of potential health risks to the local inhabitants due to the consumption of heavily contaminated fish. High levels of metals, especially cobalt, aluminum, iron, manganese, zinc and cadmium were found in fish from Tshangalele water system. [Display omitted] •Metal contamination from mining activity is of great concern for human exposure.•We analyzed metal content in fish from Lake Tshangalele (Katanga Copperbelt).•Fish consumption largely contributes to intake of Co and other metals.•In some samples, Co, Cu, Mn, Al and Cd exceeded the suggested tolerable values.