Premium
Highly Selective and Sensitive Perchlorate Sensors Based on Some Recently Synthesized Ni(II)‐Hexaazacyclotetradecane Complexes
Author(s) -
Ganjali Mohammad Reza,
Yousefi Mohammad,
Poursaberi Tahereh,
Naji Leila,
SalavatiNiasari Masoud,
Shamsipur Mojtaba
Publication year - 2003
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.200302679
Subject(s) - perchlorate , selectivity , electrode , nickel , chemistry , membrane , inorganic chemistry , ion , detection limit , chromatography , organic chemistry , biochemistry , catalysis
Three nickel(II)‐hexaazacyclotetradecane complexes were studied to characterize their abilities as perchlorate ion carrier in PVC membrane electrodes. The electrodes based on these complexes exhibit Nernstian responses for ClO $\rm{ {_{4}^{-}}}$ over very wide concentration ranges (1.0×10 −1 −5.0×10 −7 M) with detection limits of 2.0×10 −7 −5.0×10 −7 M (20–50 ng/mL). The sensors show very good selectivity for ClO $\rm{ {_{4}^{-}}}$ ion in comparison with the most common organic and inorganic anions. The responses of the proposed electrodes are independent of pH in the range of 3.5–11.0. The perchlorate selective membranes show fast response time (<10 s) and can be used for 4–12 weeks without any major deviation. The sensors were successfully used to determine the perchlorate ion in water, wastewater and human urine samples.