![Development of a Cr(III)-specific potentiometric sensor using Aurin tricarboxylic acid modified silica [An article from: Analytica Chimica Acta]](https://www.ebooknetworking.net/books/B00/0RR/bigB000RR3GVG.jpg)
Development of a Cr(III)-specific potentiometric sensor using Aurin tricarboxylic acid modified silica [An article from: Analytica Chimica Acta]
Book Details
Author(s)R.K. Sharma, A. Goel
PublisherElsevier
ISBN / ASINB000RR3GVG
ISBN-13978B000RR3GV3
AvailabilityAvailable for download now
MarketplaceUnited States 🇺🇸
Description
This digital document is a journal article from Analytica Chimica Acta, published by Elsevier in 2005. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.
Description:
A new chelating resin, Aurin tricarboxylic acid modified silica, was synthesized. The resin behaves as a selective chelating ion exchanger for Cr(III) at a pH 3.8-5.5. A polyvinyl chloride-based membrane electrode of the modified silica has been fabricated and explored as sensor for Cr(III) ions. The membrane works well over the concentration range 7.0x10^-^6 to 1x10^-^1M of Cr(III) with a Nernstian slope of 19.0mV per decade of concentration. The response time of the sensor is 10s and it can be used for a period of 5 months. The performance of the sensor is best in the pH range 3.5-6.5 and it also works well in partially non-aqueous medium. The selectivity coefficient values depicts that the membrane exhibits good selectivity over a number of interfering ions. Moreover, the membrane sensor has been applied to analyse the concentration of chromium in certified steel sample and food materials with greater than 97% accuracy.
Description:
A new chelating resin, Aurin tricarboxylic acid modified silica, was synthesized. The resin behaves as a selective chelating ion exchanger for Cr(III) at a pH 3.8-5.5. A polyvinyl chloride-based membrane electrode of the modified silica has been fabricated and explored as sensor for Cr(III) ions. The membrane works well over the concentration range 7.0x10^-^6 to 1x10^-^1M of Cr(III) with a Nernstian slope of 19.0mV per decade of concentration. The response time of the sensor is 10s and it can be used for a period of 5 months. The performance of the sensor is best in the pH range 3.5-6.5 and it also works well in partially non-aqueous medium. The selectivity coefficient values depicts that the membrane exhibits good selectivity over a number of interfering ions. Moreover, the membrane sensor has been applied to analyse the concentration of chromium in certified steel sample and food materials with greater than 97% accuracy.
