Determination of lead ions by an optical sensor based on 2-amino-cyclopentene-1-dithiocarboxylic acid

Authors: Ali A Ensafi, Z Nasr Isfahani

Publication date: 2007/8

Journal name: Sensors Journal, IEEE

Volume: 7

Pages: 1112-1117

Publisher: IEEE

Abstract A new spectrophotometric sensor for the determination of lead at trace level was
developed using chemically immobilized 2-amino-cyclopentene-l-dithiocarboxylic acid
(ACDA) on a triacetylcellulose. The sensor provided a wide concentration range of 1.0 x 10-
6 to 5.0 x 10-1 M Pb (II) with a limit of detection of 6.9 X 10-7 M Pb (II). The method also
showed a reproducible result with relative standard deviation of less than 3.5% and
response time of the optode was 10 min. Interference studies showed that Co (II) and Ni (II ...