Humic like substances (HULIS) have been identified as a major fraction of the organic component of atmospheric aerosols. These large multifunctional compounds of both primary and secondary sources are surface active and water soluble. Hence, it is expected that they could affect activation of organic aerosols into cloud droplets. We have compared the activation of aerosols containing atmospheri...

The ability of organic matter as well as carbonate ions to extract rare earth elements (REEs) from sandy sediments of a Coastal Plain aquifer was investigated for unpurified organic matter from different sources (i.e., Mississippi River natural organic matter, Aldrich humic acid, Nordic aquatic fulvic acid, Suwannee River fulvic acid, and Suwannee River natural organic matter) and for extractio...

The most efficient and cost effective methods for fabrication and characterization of metal nanoparticles involves colloidal chemistry, from which it has been inferred that the shape, size, size distribution, and stability of nanoparticles depends on specific preparation methods, especially on the reducing agents used. Chemical methods use the salt of the metal, a reducing and a protective agen...