Document Detail

Preparation of a new chromium(III) selective electrode based on 1-[(2-hydroxy ethyl) amino]-4-methyl-9H-thioxanthen-9-one as a neutral carrier.
MedLine Citation:
PMID:  20362393     Owner:  NLM     Status:  MEDLINE    
A new chromium carbon paste electrode sensor based on a carbon paste electrode containing 1-[(2-hydroxy ethyl) amino]-4-methyl-9H-thioxanthen-9-one (AMTX) as new carrier has been prepared. The influence of carbon paste ingredients including sodium tetraphenylborate (NaTPB), ionophore, Nujol and graphite powder on the electrode response has been investigated. The best performance characteristics for the electrode was obtained with a carbon:NaTPB:Nujol:AMTX in the mass ratio of (400:1.43:57.2:3mg) (86.65:0.31:12.39:0.65%). At the optimum value of all variables, the response of electrode is linear in range of 3.2x10(-7) to 1.0x10(-1)mol L(-1) with a Nernstian slope of 20.51 mV decade(-1) of Cr(3+) ion concentration with detection limit of 1.6x10(-7)mol L(-1). The electrode response is independent of pH in the range of 4.8-6.3, while the response time of the electrode was approximately 8 s. The potentiometric selectivity coefficients of proposed chromium-selective electrode towards various interfering ions were determined by fixed interference method (FIM), separate solution method (SSM) and matched potential method (MPM).
M Ghaedi; A Shokrollahi; A R Salimibeni; S Noshadi; S Joybar
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Publication Detail:
Type:  Journal Article     Date:  2010-01-18
Journal Detail:
Title:  Journal of hazardous materials     Volume:  178     ISSN:  1873-3336     ISO Abbreviation:  J. Hazard. Mater.     Publication Date:  2010 Jun 
Date Detail:
Created Date:  2010-04-13     Completed Date:  2010-07-13     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9422688     Medline TA:  J Hazard Mater     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  157-63     Citation Subset:  IM    
Copyright Information:
Copyright 2010. Published by Elsevier B.V.
Chemistry Department, Yasouj University, Zirtol, Kohgyloyeh Boyerahmad 75914-353, Yasouj 75918-74831, Iran.
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MeSH Terms
Chromium / chemistry*
Coffee / chemistry
Dimethyl Sulfoxide
Hydrogen-Ion Concentration
Indicators and Reagents
Industrial Waste / analysis
Membranes, Artificial
Petroleum / analysis
Reference Standards
Spectrophotometry, Ultraviolet
Tea / chemistry
Thioxanthenes / chemistry*
Water Supply / analysis
Xanthones / chemistry*
Reg. No./Substance:
0/1-((2-hydroxyethyl)amino)-4-methyl-9H-thioxanthen-9-one; 0/Coffee; 0/Indicators and Reagents; 0/Industrial Waste; 0/Ligands; 0/Membranes, Artificial; 0/Petroleum; 0/Solvents; 0/Tea; 0/Thioxanthenes; 0/Xanthones; 67-68-5/Dimethyl Sulfoxide; 7440-47-3/Chromium

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