Determination of chromium in waste-water and cast iron samples by fluorescence quenching of rhodamine 6G.
A new simple, selective and sensitive fluorescence quenching method was developed to determine chromium with rhodamine 6G. The method is based on the oxidation of rhodamine 6G by chromium(VI) in sulfuric acid solution. The linear calibration graph was obtained in the range 8-80 ng ml(-1) chromium(VI). The detection limit is 0.8 ng ml(-1). The method was applied successfully to the determination of chromium in waste water and cast iron samples.
Jie
N
N
Department of Chemistry, Shandong University, Jinan, People's Republic of China.
Zhang
Q
Q
Yang
J
J
Huang
X
X