摘要
A novel chemiluminescence .Cl sensor combined with flow-injectionanalysis nas been developed for determining free chlorine in tap water. Takeanalytical reagent luminol was immobilied on an anion exchange res in column.Will ie a volume of the sodium hydroxide passed the column, luminol was elutedfrom the res in in a Ika I me aqueous solut ion and then mixed wi th the samples tream to react and produce CI. The CI emiss ion miens ity was correlated￣ ￣8 ￣' u.i th the standard C10 concentration in the lange of I x 10 to 4 x 10 g ml, andthe detect ion I imi t was & x 10-' g .l-' C10--. Interfering metal ions plesent inwa ter wele effect ively separated by a pre-colunm ca t ion exchanger. A completeana lys is, including sampl lug and washing, could be performed in 1 min wi tha relative standald deviation of less than 5%. The sensor was stable for over 200t imes and has been appl led successfully to the determination of C10 in tapwa t e i.
A novel chemiluminescence .Cl sensor combined with flow-injectionanalysis nas been developed for determining free chlorine in tap water. Takeanalytical reagent luminol was immobilied on an anion exchange res in column.Will ie a volume of the sodium hydroxide passed the column, luminol was elutedfrom the res in in a Ika I me aqueous solut ion and then mixed wi th the samples tream to react and produce CI. The CI emiss ion miens ity was correlated￣ ￣8 ￣' u.i th the standard C10 concentration in the lange of I x 10 to 4 x 10 g ml, andthe detect ion I imi t was & x 10-' g .l-' C10--. Interfering metal ions plesent inwa ter wele effect ively separated by a pre-colunm ca t ion exchanger. A completeana lys is, including sampl lug and washing, could be performed in 1 min wi tha relative standald deviation of less than 5%. The sensor was stable for over 200t imes and has been appl led successfully to the determination of C10 in tapwa t e i.
