Publications by authors named "Siyi Ge"
Insights into the influence of Fe(III) on the interaction between roxarsone and humic acid using multi-spectroscopic techniques.
Spectrochim Acta A Mol Biomol Spectrosc
March 2023
The influence of Fe(III) on the interaction between roxarsone (ROX) and humic acid (HA) was investigated by multi-spectroscopic techniques. The fluorescence quenching experiment indicated that the fluorescence intensity of HA-ROX was quenched by Fe(III) through a static quenching process. Synchronous fluorescence spectra provided further information concerning the competitive combination between ROX and Fe(III) for HA.
View Article and Find Full Text PDFArticle Synopsis
- The study examined how humic acid (HA) interacts with roxarsone (ROX) using fluorescence spectroscopy and titration techniques, focusing on factors like HA concentration, pH, and temperature.
- The results showed that ROX can quench the fluorescence of HA at different peaks, with the strongest quenching observed at peak C, and the quenching strength varied based on environmental conditions.
- The interaction is primarily due to static quenching, especially at pH 6 and within a temperature range of 25 to 55 degrees Celsius, confirming that carboxyl groups in HA are key sites for ROX binding.