Monitoring perchlorate exposure and thyroid hormone status among raccoons inhabiting a perchlorate-contaminated site.

摘要: Perchlorate is a water soluble anion that readily accumulated in vegetation. It inhibits uptake of iodide into thyroid gland tissue, thereby reducing production hormones. Potential raccoon food items including berries, fish, and vegetation collected at contaminated site contained quantifiable concentrations perchlorate as determined by ion chromatography. Therefore, we monitored resident raccoons for exposure to examining plasma hormone concentrations. Resulting analytical data failed demonstrate among likely consumed along perchlorate-contaminated bodies. There were no correlations between triiodothyronine or thyroxine stimulating concentrations, but significantly higher 2000 than 2001 (p = 0.0081). These suggest natural attenuation remedial efforts initiated January may have reduced inhabiting this from 2001. Temporal, spatial, factors limited our ability quantify raccoons, however, do not indicate currently are risk significant subsequent effects.