Title of article :
Determining copper ions in water using electrochemiluminescence Original Research Article
Author/Authors :
Brian High، نويسنده , , David Bruce، نويسنده , , Mark M. Richter، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2001
Pages :
6
From page :
17
To page :
22
Abstract :
The detection of copper ions in aqueous solution using electrochemiluminescence (ECL) is reported. ECL is generated by reducing Cu2+ ions to Cu+ with hydroxylamine hydrochloride and then complexing with the chelating agent 2,9-dimethyl-1,10-phenanthroline (dmp) to form Cu(dmp)2+, followed by oxidation in the presence of tri-n-propylamine (TPrA). The ECL intensity peaks a potential corresponding to oxidation of both TPrA and Cu(dmp)2+, indicating that the emission is from a Cu(dmp)2+ metal-to-ligand charge transfer excited state. Conditions for ECL emission were optimized and used to generate a calibration curve that was linear over the 0.1–5 mg/l (ppm) range. The theoretical limit of detection was 6 μg/l (ppb), with a practical limit of detection of 0.1 ppm. The ECL of several metal ions other than copper with dmp, and effects on Cu(dmp)2+ ECL were also examined.
Keywords :
Catecholamines , Urine , occupational health , validation , Review , Analytical method
Journal title :
Analytica Chimica Acta
Serial Year :
2001
Journal title :
Analytica Chimica Acta
Record number :
1029890
Link To Document :
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