Isotopically modified nanoparticles for enhanced detection in bioaccumulation studies
Environmental Science & Technology
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Abstract
This work presents results on synthesis of isotopically enriched (99% 65Cu) copper oxide nanoparticles and its application in ecotoxicological studies. 65CuO nanoparticles were synthesized as spheres (7 nm) and rods (7 × 40 nm). Significant differences were observed between the reactivity and dissolution of spherical and rod shaped nanoparticles. The extreme sensitivity of the stable isotope tracing technique developed in this study allowed determining Cu uptake at exposure concentrations equivalent to background Cu concentrations in freshwater systems (0.2–30 μg/L). Without a tracer, detection of newly accumulated Cu was impossible, even at exposure concentrations surpassing some of the most contaminated water systems (>1 mg/L).
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Isotopically modified nanoparticles for enhanced detection in bioaccumulation studies |
| Series title | Environmental Science & Technology |
| DOI | 10.1021/es2039757 |
| Volume | 46 |
| Issue | 2 |
| Year Published | 2012 |
| Language | English |
| Publisher | American Chemical Society |
| Description | 7 p. |
| First page | 1216 |
| Last page | 1222 |
| Google Analytic Metrics | Metrics page |