Fig. 2.

Size characterization of NPs by using SEC-ICP-MS. (A) Chromatograms of a mixture of Au NPs (10 and 30 nm) and Ag NPs (10, 20, and 40 nm) recorded by SEC-ICP-MS. (B) Linear fitting of TEM and DLS particle diameter with the SEC-ICP-MS retention time of the three Ag NPs (10, 20, and 40 nm) and 30 nm Au NPs separated with a 1000 Å column, as well as 2.7, 5.0, and 10 nm Ag NPs separated with a 500 Å column. Reprinted with permission from ref. [59]. Copyright (2017) American Chemical Society. NPs, nanoparticles; SEC-ICP-MS, size exclusion chromatography combined with inductively coupled plasma mass spectrometry; DLS, dynamic light scattering; TEM, transmission electron microscopy.