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A Study on the Associated Complex of AsMo Heteropoly Acid- Rhodamine B with Secondary Scattering Spectrometry

HUANG Yong yan, JIANG Zhi liang , WU Qun di, WANG Sheng mian (Colleage of Chemistry and Life Science, Guangxi Normal University, Guilin, 541004)  
A new secondary scattering spectrometric method for the determination of 1~20 ng/mL As has been described. This method was based on that As(Ⅴ), Mo(Ⅵ) and rhodamine B (RDB) could form the ternary associated complex of AsMo·RDB with a secondary scattering peak at 650 nm. The results showed that this method had high sensitivity, good selectivity and was easy to operate.
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