Abstract
A comparison has been made between the picrate and the inductively coupled plasma-atomic emission spectroscopy methods for detection of the metals UO2 2+, Cu2+, Eu3+, Cd2+, Cr3+, and Pb2+ after extraction from aqueous solution into chloroform with a series of calix[4]arene amide and amines. These data reveal that the picrate method gives consistently higher analytical results because of salt formation between the picrate anion and the protonated amide or amine cation. By comparison, a calix[4]arene ester that has no centers that can be protonated by picric acid shows no difference between the two methods.
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.
