Characterization of engineered nanoparticles in commercially available spray disinfectant products advertised to contain colloidal silver.

ABSTRACT: Given the potential for human exposure to silver nanoparticles from spray disinfectants and dietary supplements, we characterized the silver-containing nanoparticles in 22 commercial products that advertised the use of silver or colloidal silver as the active ingredient. Characterization parameters included: total silver, fractionated silver (particulate and dissolved), primary particle size distribution, hydrodynamic diameter, particle number, and plasmon resonance absorbance. A high degree of variability between claimed and measured values for total silver was observed. Only 7 of the products showed total silver concentrations within 20% of their nominally reported values. In addition, significant variations in the relative percentages of particulate vs. soluble silver were also measured

SUBMITTER: Rogers KR 

PROVIDER: S-EPMC5939576 | biostudies-literature | 2018 Apr

REPOSITORIES: biostudies-literature