Open AccessPotentiometric Sensors for Heavy Metals – An Overview
Author(s) -
Vinod K. Gupta
Publication year - 2005
Publication title -
chimia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.387
H-Index - 55
eISSN - 2673-2424
pISSN - 0009-4293
DOI - 10.2533/000942905777676614
Subject(s) - potentiometric titration , detection limit , potentiometric sensor , selectivity , limit (mathematics) , heavy metals , work (physics) , electroanalytical method , metal ions in aqueous solution , metal , chemistry , nanotechnology , ion , materials science , environmental chemistry , chromatography , engineering , metallurgy , mathematics , mechanical engineering , mathematical analysis , biochemistry , organic chemistry , catalysis
An overview of potentiometric sensors that are capable of detecting heavy metal ions is presented. Notwithstanding the tremendous work performed so far, it is obvious that severe limitations still exist in terms of selectivity, limits of detection, dynamic ranges, applicability to specific problems, and reversibility. A survey of important advances in potentiometric sensors with regard to high selectivity, lower detection limit, fast response time and on-line environmental analysis is given.