PAN-Immobilized PVC-NPOE Membrane for Environmentally Friendly Sensing of Cd(II) Ions
Penulis/Author
MOERSILAH (1); Prof. Drs. Dwi Siswanta, M.Eng., Ph.D. (2); Prof. Drs. Roto, M.Eng, Ph.D. (3); Prof. Drs. Mudasir, M.Eng., Ph.D. (4)
Tanggal/Date
2017
Kata Kunci/Keyword
Abstrak/Abstract
A simple, cheap and environmentally friendly analytical method of Cd(II) analysis in the aqueous system has
been developed by immobilization of 1-(2-pyridilazo)-2-naphtol (PAN) in polyvinyl chloride (PVC) matrix and
nitrophenyl octyl ether (NPOE) as a plasticizer. Upon contact with Cd(II) in the solution, the color of sensor
membrane changes from dark yellow to dark red, which is due to the formation of Cd(II)–PAN complex. The best
sensing results were obtained at pH 8.0 and ?max 558 nm. The dimension of the proposed sensor membrane was
0.8 cm x 2 cm with a thickness of 0.05 mm, the volume of sample was 2 mL with the Cd(II) concentration range of 0–
1.2 ppm. The detection limit of the method was found to be 0.048 ppm and molar absorptivity of 4.42 x 105
L mol-1 cm-1
.
The proposed methods have been applied in the determination of Cd(II) in water samples after addition of internal
standard with recovery 98.88-100.75%.
