摘要
在H2SO4介质中，Mo（V）与SCN-生成的络离子能够熄灭罗丹明6G的荧光，加入聚乙烯酸（PVA－124）后，体系的荧光熄灭程度比不加时大23倍，Mo量在0．075－3．5μg／25mL范围内与荧光熄灭值△F成线性关系。本法灵敏度高，选择性好。
In the medium of H2SO4, the complex ion Mo (v )-SCN-can quench the nuorescence of Rh6Gquantitatively. The linear range is 0. 075- 3.5μg/25mL. The quenching of the system is increased by23 times in the presence of PVA-124.This method is htehly sensitive and selective, which is applied tothe determination of micro amount of molybdenum in alloy steel with satisfortory results.
出处
《光谱实验室》
CAS
CSCD
1997年第4期88-90,共3页
Chinese Journal of Spectroscopy Laboratory
关键词
荧光熄灭法
罗丹明6G
钼
合金钢
Fluorescence Quenching Method, Rhodamine6G, Polyvinyl Alcohol, Molybdenum,Thiocyanate
