Design, construction and investigating functionality of a nickel (II) ion selective electrode

International Journal of Physical Sciences

Fekri Lari F.¹ 

关键词: Ni2+ion–    selective electrode;    25;    26;    27 tri propoxy 28;    amino 5;    11;    17;    23–    tetra–    tert–    butyl–    calix[4]arene;    scanning electron microscopy (SEM).;   

DOI  :  10.5897/IJPS11.1698

学科分类：物理（综合）

来源: Academic Journals

【 摘 要 】

Ni2+ion–selective electrode (Ni-ISE) based on plasticized poly(vinyl chloride) (PVC) membrane with 25, 26, 27 tri propoxy 28, Amino 5, 11, 17, 23–tetra–tert–butyl–calix[4]arene as ionophore and dibutyl phthalate (DBP) as plasticizer was designed and constructed. The Ni-ISE showed a linear reply in the concentration range of 1.0 × 10-1to 1.0 × 10-4Mwith slope of 29.3 ± 0.5 mV/decad.The Ni-ISE response time was ≤ 6s and was used for two months with no deviation in the pH range 4 to 9. The best performance was obtained with a membrane composition of 30% PVC, 62% DBP, 3% 25, 26, 27–tripropoxy–28, amino 5, 11, 17, 23–tetra–tert–butyl-calix[4]arene and 5% potassium tetrakis[p–cholorophenyl]borate(KTpClPB). Its detection limit was 1.0 × 10-5M. The selectivity coefficientsfor different cations were calculated by the matched potential method (MPM). The scanning electron microscopy (SEM) of the Ni-ISE’s membranes showed some morphological changes during its life span, probably due to both the reaction between the Ni2+ion and / or less of the membrane parts by permeation.

【 授权许可】

CC BY