A highly sensitive and selective bulk optode based on dithiacyclooctadecane derivative incorporating chromoionophore V for determination of ultra trace amount of Hg (II)

Authors: Ali R Firooz, Ali A Ensafi, Z Hajyani

Publication date: 2012/12/1

Journal name: Sensors and Actuators B: Chemical

Publisher: Elsevier

A new optical sensor for highly sensitive and selective determination of ultra-trace amounts
of mercury (II) ions is developed. This optode is based on the interaction of 1, 15-diaza-3, 4,
12, 13-dibenzo-8-oxa-16, 18-pyridin-5, 1-dithiacyclo octadecane-2, 14-dione with Hg (II) in
plasticized (2-nitrophenyloctyl ether (o-NPOE)) polyvinyl chloride (PVC) membrane
incorporating chromoionophore V as a lipophilic H+-selective indicator. By increasing Hg (II)
concentration, the absorbance of chromoionophore V in the membrane decreased at ...