Abstract
In the presence of cetyltrimethylammonium ions (CTA) a significant bathochromic shift in the color reaction of beryllium with Eriochrome Cyanine R (ER) takes place. This is accompanied by a nearly trifold increase in the sensitivity. The triple complex of beryllium with Eriochrome Cyanine R and CTA (in which the molar ratio of Be:ER is 1:2) is proposed as a basis of a new sensitive spectrophotometric method of beryllium determination. The molar absorptivity ϵ = 8.65 × 10 4 at λ max = 590 nm, pH ~ 7 (borate buffer), when the solution is heated at 60 °C for 15 min. The method is very selective when EDTA is used as a masking agent. EDTA does not affect the formation of the triple beryllium complex neither do tartrate, citrate, and acetate. Phosphate and fluoride interfere.
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.
