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Mercury(II) Ion‐Selective Electrode Based on Dibenzo‐diazathia‐18‐crown‐6‐dione
Author(s) -
Javanbakht Mehran,
Ganjali Mohammad Reza,
Eshghi Hossein,
Sharghi Hashem,
Shamsipur Mojtaba
Publication year - 1999
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/(sici)1521-4109(199902)11:2<81::aid-elan81>3.0.co;2-q
Subject(s) - potentiometric titration , mercury (programming language) , chemistry , inorganic chemistry , alkali metal , electrode , ion , titration , electroanalytical method , metal ions in aqueous solution , ion selective electrode , glass electrode , alkaline earth metal , analytical chemistry (journal) , selectivity , reference electrode , chromatography , electrochemistry , catalysis , organic chemistry , computer science , programming language
A PVC‐based membrane of dibenzodiazathia‐18‐crown‐6‐dione reveals a Nernstian potentiometric response for Hg 2+ over a wide concentration range (8.0×10 −6 to 1.0×10 −2 mol dm −3 ). It has a response time of about 10s and can be used for at least 3 months without any divergence. The proposed electrode revealed very good selectivities for Hg 2+ over a wide variety of alkali, alkaline earth, transition and heavy metal ions and could be used in a pH range of 0.5–2.5. It was successfully used as an indicator electrode in potentiometric titration of mercury ions.