AI Article Synopsis
- A new method was developed to detect trace amounts of chlorine dioxide in water, using rhodamine dyes that change fluorescence in the presence of chlorine dioxide.
- The best-performing dye was rhodamine S, capable of detecting chlorine dioxide concentrations as low as 0.0030 µg/mL, within a linear range of 0.0060 to 0.450 µg/mL.
- This method demonstrated good selectivity, as other chlorine compounds did not interfere with the detection process, and it successfully analyzed both synthetic and real water samples.
Article Abstract
A new simple, selective and sensitive method for the determination of trace chlorine dioxide in water has been developed, based on the oxidation by chlorine dioxide to reduction the fluorescence of rhodamine dyes in ammonia-ammonium chloride buffer solution. Four rhodamine dyes systems such as rhodamine S, rhodamine G, rhodamine B and butyl-rhodamine B were tested. The rhodamine S system is the best, with a linear range of 0.0060-0.450mugmL(-1) and a detection limit of 0.0030mugmL(-1) ClO(2). It was applied to the determination of chlorine dioxide in synthetic samples and real samples, with satisfactory results. This method has good selectivity, especially, other chlorine species such as chlorine, hypochlorite, chlorite and chlorate do not interfere the determination. The mechanism of fluorescence reduction was also considered.
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| http://dx.doi.org/10.1016/j.talanta.2004.12.037 | DOI Listing |
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