期刊
ENVIRONMENTAL POLLUTION
卷 302, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.envpol.2022.119080
关键词
Antlers; Biomonitoring; Floodplain; Germany; Heavy metals; Lead isotopes
Lead concentrations in the antlers of European roebucks in the floodplain of Innerste River contaminated by historical mining activities were analyzed. The study found long-lasting impact of metal ore mining, processing, and smelting in the Harz Mountains on lead pollution in the floodplains and lead exposure of wild herbivores. The suitability of roe deer antlers for monitoring environmental lead levels and the usefulness of lead isotope signatures for source apportionment of lead pollution were highlighted.
Lead concentrations in hard antlers of adult European roebucks (Capreolus capreolus) were analyzed to assess lead exposure of roe deer roaming the floodplain of the Innerste River, a river system contaminated due to historical metal ore mining, processing, and smelting in its upper reaches. Antler lead concentrations of roebucks culled in the period 1939-2018 within or close to the Innerste floodplain ranged between < 0.17 mg Pb/kg (limit of detection) and 51.5 mg Pb/kg (air-dry weight). Median lead concentration in antlers of roebucks culled within the floodplain was 11.1 mg Pb/kg, compared to 2.3 mg Pb/kg in antlers of bucks culled in the floodplain vicinity (P < 0.01). Sampling year had no significant effect on antler lead concentrations (P = 0.748). Lead isotope ratios of antlers from the Innerste downstream area (Pb-206/Pb-207: 1.179-1.181; Pb-208/Pb-206: 2.083-2.085) fell within the range of those reported for hydrothermal vein deposits from the upper catchment area of the Innerste River in the Harz Mountains. Our study demonstrates the long-lasting impact of the historical metal ore mining, processing, and smelting in the Harz Mountains on lead pollution in floodplains of rivers draining this area and the lead exposure of wild herbivores inhabiting the floodplains. Furthermore, it highlights the suitability of roe deer antlers for monitoring environmental lead levels and the usefulness of lead isotope signatures in antlers for source apportionment of lead pollution.
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