Abstract
A simple, sensitive and specific spectrofluorimetric method for the determination of nitrite has been developed. It is based on the selective reaction of nitrite with 5,6-diamino-1,3-naphthalene disulfonic acid (DANDS) in acidic medium to form 1-[H]-naphthotriazole-6,8-disulfonic acid, a highly fluorescent compound in alkaline medium. The linear calibration range for nitrite was 0.8–112 ng ml −1 with a 3 σ detection limit of 0.09 ng ml −1, lower than those of other spectrofluorimetric methods. The proposed method has been applied to the determination of nitrite in tap water (33 ng ml −1) and lake water (17 ng ml −1) without extraction, with R.S.D. ( n=6) of 1.7 and 4.9%, respectively and recoveries of 98–102%.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
