期刊
NANOSCALE
卷 7, 期 12, 页码 5480-5487出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4nr06486k
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- Laboratory Directed Research and Development (LDRD) program (Complex Modeling) at Brookhaven National Laboratory (BNL) - Office of Science, US Department of Energy (OS-DOE) [12-007, DE-SC00112704]
- Columbia University Energy Frontier Research Center (EFRC) - U.S. Department of Energy, Basic Energy Sciences (DOE-BES) [DE-SC0001085]
Difference atomic pair distribution function methods have been applied to detect and characterize nanoparticles suspended in a solvent at very dilute concentrations. We specifically consider nanoparticles of a pharmaceutical compound in aqueous solution using X-ray PDF methods, a challenging case due to the low atomic number of the nanoparticle species. The nanoparticles were unambiguously detected at the level of 0.25 wt%. Even at these low concentrations the signals were highly reproducible, allowing for reliable detection and quantitative analysis of the nanoparticle structure.
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