Abstract
There are strong forces between phenylenediamine (PPD) and nanogold particle (AuNP) that make the AuNPs aggregation and exhibit a strong resonance Rayleigh scattering (RRS) peak at 368 nm. When there is NO2-, it reacts with PPD to generate an azo compound. However, there is weak force between AuNP and the azo compound that can’t make the AuNPs aggregation. When concentration of NO2- increased, the AuNP aggregations become weak that led the RRS peak to decrease. The decreased RRS intensity is linear to NO2-concentration in the range of 1-25 μmol/L. This method was applied to analysis of water samples with simplicity.
Full Text 
Sign-in/Register to access full text options
Sign-in/Register to access full text options 
Published version (
Free)
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
