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Determination of trace silver in waste water by 9,10‐dimethylacridinium fluorosulfonate‐K 2 S 2 O 8 chemiluminescence system
Author(s) -
Lin JinMing,
Zhang Fan
Publication year - 1991
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.19910090604
Subject(s) - chemistry , chemiluminescence , trace (psycholinguistics) , environmental chemistry , trace amounts , radiochemistry , chromatography , medicine , alternative medicine , pathology , philosophy , linguistics
A new highly sensitive method for determination of trace silver in waste water with 9,10‐dimethylacridinium fluorosulfonate (DAFA)‐K 2 S 2 O 8 system was suggested. In the basic aqueous solution, trace of silver (I) showed strongly catalytic effect on the chemiluminescence system with the presence of 2,2′‐bipyridine. The range of the linear relationship between light intensity and concentration of silver (I) is 1.0 × 10 3 mol / L to 6.0 × 10 3 mol / L. The detection limit is 8.0 × 10 3 mol / L, and the RSD for 5.0 × 10 3 mol / L Ag (I) is 6.5% ( n =13). In the existence of potassium fluoride, the selectivity is higher. Combining the treatment with nitric acid, the method is applied to determine some environmental waste water and the results are similar to atomic absorption spectroscopy.