AI Article Synopsis
- Researchers used lead stable isotopes to trace the source of acute lead poisoning in a Tundra Swan and analyze its overall lead exposure.
- During the study, samples from various body parts and metallic objects from the swan's gizzard revealed that the lead in its blood and soft tissues matched the lead ratios of a fishing sinker, identified as the primary poison source.
- The analysis indicated that while certain objects contributed differently to the swan's lead exposure, the lead isotopic composition in the femur reflected a combination of multiple sources, suggesting that bone can store a lifetime record of lead exposure.
Article Abstract
We utilized lead (Pb) stable isotopes to identify the source of acute Pb poisoning in a Tundra Swan (Cygnus columbianus) and evaluated overall Pb exposure. Upon necropsy, we obtained samples of blood, liver, kidney, heart, thigh, breast, femur, and metallic objects (i.e., fishing sinker, spring and swivels) from the gizzard for Pb isotopic analysis. Pb isotope ratios of blood and soft tissues were essentially identical to the Pb ratios of the sinker, the likely source of acute poisoning. The spring and swivels had lower Pb content and ratios distinct from tissue, suggesting no significant contribution to poisoning. Femur Pb isotopic composition was the most distinct biological sample and indicative of a combination of sources. These results demonstrate isotopic analysis as a viable method for determining the source of acute Pb poisoning, and that Pb isotope ratios in bone most likely record a lifetime-averaged metric of Pb exposure.
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| http://dx.doi.org/10.1007/s00128-020-03064-9 | DOI Listing |
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