Determination of chlorine by fluorescence quenching

Chlorine is used extensively in the chemical industry and for disinfection of drinking water. Many methods have been reported for the determination of chlorine species. Fluorescence quenching to determine chlorine is a promising method because of its high sensitivity and selectivity. This study focuses on development of a sulfonamide-based collection system for low levels of chlorine in air. Quantitation of chlorine is based on the quenching of the fluorescence signal observed when chlorine reacts with the fluorescent sulfonamide compound. Both a direct fluorimetric and a fluorescence-HPLC method have been established. Linear relationships are found between the fluorescence intensity or HPLC peak area and the amount of chlorine. Detection limits are in the ppb range or better. These methods have been applied to water samples. Experiments have also shown that sulfonamide-treated dihydroxypropylated silica can effectively collect gas-phase chlorine.

Name thesis:degree_name

Master of Science (MS)

Level thesis:degree_level

Thesis

Discipline thesis:degree_discipline

Chemistry

Grantor dc:publisher

University of Nevada, Las Vegas

Year

2000

Author dc:creator

• Wei, Yixin

Contributors dc:contributor

• Brian J. Johnson

Statement dc:rights

• IN COPYRIGHT. For more information about this rights statement, please visit http://rightsstatements.org/vocab/InC/1.0/

Language dc:language

English

Identifier

https://oasis.library.unlv.edu/rtds/1228

OAI identifier oai:identifier

oai:oasis.library.unlv.edu:rtds-2227