Document Detail


Quantification of dibromodimethylhydantoin disinfectants in water by chemiluminescent method.
MedLine Citation:
PMID:  17372377     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Quantification of 1,3-dibromo-5,5-dimethylhydantoin (DBDMH) was studied by its chemiluminescence (CL) reaction with luminol in an alkaline medium. The stability of DBDMH, 1,3-dichloro-5,5-dimethylhydantoin (DCDMH) and 1-bromo-3-chloro-5,5-dimethylhydantoin (BCDMH) in water was initially assessed by its CL reaction capability. The results indicated that the hydrolysis process was critically dependent on the types of reagents and their pHs. Capillary electrophoresis (CE) separation with CL detection procedure was applied to the DBDMH solution. It was found that at least 3 species in the aqueous DBDMH solution could oxidize luminol to give luminescence: one of them was confirmed to be hypobromite and the others could be the unhydrolyzed or active oxygen produced in the hydrolysis reaction. Finally, a flow-injection chemiluminescent method was proposed for the determination of DBDMH. The concentration of the analyte showed a linear relationship with the CL intensity in the range of 1.2x10(-10) to 1.0x10(-6) mol dm-3 and the detection limit was as low as 6.2x10(-11) mol dm-3. The relative standard deviation (RSD) is 1.7% (n=9) for 2.8x10(-7) mol dm-3 DBDMH.
Authors:
Shujuan Song; Peng Liu; Qi Jun Song
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Analytical sciences : the international journal of the Japan Society for Analytical Chemistry     Volume:  23     ISSN:  0910-6340     ISO Abbreviation:  Anal Sci     Publication Date:  2007 Mar 
Date Detail:
Created Date:  2007-03-20     Completed Date:  2007-06-07     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8511078     Medline TA:  Anal Sci     Country:  Japan    
Other Details:
Languages:  eng     Pagination:  327-30     Citation Subset:  IM    
Affiliation:
School of Chemical and Material Engineering, Southern Yangtze University, Wuxi, China.
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MeSH Terms
Descriptor/Qualifier:
Chemiluminescent Measurements / methods*
Disinfectants / analysis*,  chemistry
Hydantoins / chemistry*
Indicators and Reagents / analysis,  chemistry
Luminol / chemistry
Water / chemistry*
Chemical
Reg. No./Substance:
0/Disinfectants; 0/Hydantoins; 0/Indicators and Reagents; 521-31-3/Luminol; 7732-18-5/Water

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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