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A PVC‐based pentathia‐15‐crown‐5 membrane potentiometric sensor for mercury( II )
Author(s) -
Gupta Vinod K.,
Jain Suresh,
Khurana Upendra
Publication year - 1997
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.1140090609
Subject(s) - potentiometric titration , mercury (programming language) , chemistry , potentiometric sensor , membrane , chromatography , ion , organic chemistry , biochemistry , computer science , programming language
Poly(vinyl chloride) (PVC)‐based membrane of pentathia‐15‐crown‐5 exhibits good potentiometric response for Hg 2+ over a wide concentration range (2.51 × 10 −5 to 1.00 × 10 −1 mol dm −3 ) with a slope of 32.1 mV per decade of Hg 2+ concentration. The response time of the sensor is as fast as 20 s. The electrode has been used for a period of six weeks and exhibits fairly good discriminating ability towards Hg 2+ in comparison to alkali, alkaline and some heavy metal ions. The electrode can be used in the pH range from 2.7 to 5.0.