Determination of live clay in foundry greensand by sodium-selective electrode

Michael C. Cooper; Michael J. Hey; Nicholas J. Miles; Brian P. Atkin

doi:10.1039/A808344D

This website uses cookies to give you the best user experience. If you continue without changing your settings we'll assume you are happy to receive all RSC cookies. You can change your cookie settings by navigating to our Privacy and Cookies page and following the instructions. These instructions are also obtainable from the privacy link at the bottom of any RSC page.

skip RSC | ChemSpider | Feedback

Home > Journals > Analyst > Determination of live c...

For Authors & Referees | For Librarians | For Members

You do not have JavaScript enabled. Please enable JavaScript to access the full features of the site or access our non-JavaScript page.

Analyst

Issue 2, 1999

The home of premier fundamental discoveries, inventions and applications in the analytical and bioanalytical sciences

Impact Factor 4.23 24 Issues per Year Indexed in MEDLINE

Journal Home

Previous Article | Next Article

Paper

Determination of live clay in foundry greensand by sodium-selective electrode

Michael C. Cooper, Michael J. Hey, Nicholas J. Miles and Brian P. Atkin

Analyst, 1999,124, 135-138

DOI: 10.1039/A808344D

Please wait while Download options loads

Download Citation

Request Permissions

Abstract
Cited by
Related Content

The rapid determination of ‘live’ clay in greensand is an essential procedure for the efficient running of a foundry production line, since progressive calcination of the clay binder during casting affects mould competence and quality of finish. A new method for assessing the active fraction of clay in foundry sand is described that is based on the response of an ion-selective electrode (ISE) to sodium ions liberated from the clay by ammonium ions. The method possesses advantages of speed and objectivity over the Methylene Blue titration method presently employed in foundries. Results appear to be unaffected by the presence of coal dust in greensand.

Abstract from Analytical Abstracts 1999

The sample (5 g) was stirred for 2 min with a NH₄Cl/NH₃ solution. A Na ISE was then immersed in the suspension and the potential was recorded. The ISE response, which was related to the concentration of Na ions displaced from the sample, was used to calculate the amount of live clay present in the greensand. The detection limit was 0.5 ppm Na. The method was faster and gave better accuracy and precision than the methylene blue titration method.

Analyst - Information Point

About this Journal

People and Contacts

Submit to this Journal

Editorial Board

Authors and Referees

Subscription Information

Follow Journal | |

Additions & Corrections

Addition

Terms & Conditions|Privacy and Cookies |Accessibility|ACAP Enabled

Analyst

Determination of live clay in foundry greensand by sodium-selective electrode

Log in (Free Access)

Log in (Subscriber Access)

Search Articles By

Additions & Corrections

Analyst

Determination of live clay in foundry greensand by sodium-selective electrode

This text is added as a work around for heading error in Accessibility testing

Log in (Free Access)

Log in (Subscriber Access)

Search Articles By

Additions & Corrections