Amperometric sensor for propanil

✍ Scribed by Namal Priyantha; Dharshanie Weerabahu

• Book ID: 102623843
• Publisher: Elsevier Science
• Year: 1996
• Tongue: English
• Weight: 495 KB
• Volume: 320
• Category: Article
• ISSN: 0003-2670
• DOI: 10.1016/0003-2670(95)00539-0

✦ Synopsis

The metalloporphyrin 5,10,15,20-tetraphenylporphyrinatoiron(II1) chloride shows catalytic activity for reduction of 3,4-dichloropropionanilide, the active ingredient of the herbicide Propanil. An amperometric sensor can therefore be constructed by coating the porphyrin catalyst as a thin layer on a glassy carbon electrode. The sensor provides reproducible responses at low concentrations with a lower detection limit (S/N = 3) of 8 X lo-' M. The useful lifetime of the sensor is about seven weeks.