[A new fluorescence quenching method for the determination of trace ClO2 in water using silver nanoparticles].
In pH 9.1 NH4Cl-NH3 x H2O buffer solution, there is a fluorescence peak at 470 nm for silver nanoparticles. A fluorescence quenching takes place when it was oxidized by ClO2. The intensity of fluorescence quenching is linear with the concentration of ClO2 in the range of 0.0011-0.185 microg x mL(-1). The detection limit is 0.004 7 microg x mL(-1). A new fluorescence method has been proposed for the determination of ClO2 in water samples with satisfactory results.
Kang
Cai-yan
CY
Department of Resource and Environmental Science, Guangxi Normal University, Guilin, China.
Chen
Yuan-yuan
YY
Jiang
Zhi-liang
ZL
Xi
Dan-li
DL