Abstract
A rapid spectrophotometric method for the determination of SO 4 2− in surface water is reported. It is based on the reaction of CPA III-Ba2+ complex with SO 4 2− in acidic medium in the presence of ethanol. Beer's law is obeyed up to 120 Μg of SO 4 2− in 25 ml solution. The molar absorptivity is 6.3×103 l · mol−1 · cm−1 at 500 nm, and the coefficient of variation varies from 1.85% to 3.10%. The absorbance remains stable for at least 24 h and interfering ions are separated by strongly acidic cation-exchange resin.
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.
