Optical ph sensing material prepared from doped sol-gel film for use in acid-base titration
| Main Authors: | Ahmad, Musa, Tan, T.W. |
|---|---|
| Format: | Article info application/pdf Journal |
| Bahasa: | eng |
| Terbitan: |
Universitas Gadjah Mada
, 2017
|
| Online Access: |
http://ajstd.org/index.php/ajstd/article/view/311 http://ajstd.org/index.php/ajstd/article/view/311/306 |
Daftar Isi:
- An optical pH sensing material has been prepared in this study by using sol-gel technique. Bromothymol blue, bromophenol blue and thymol blue were chosen in this study as acidbase indicators for strong acid-strong base, strong acid-weak base and weak acid-strong base titration, respectively. The results show that these indicators could be successfully entrapped inside the sol-gel film and still maintain its chemical behaviour as in solution. The entrapped acid-base indicators respond well to any pH changes and could be used to determine the end-point of the acid-base titration.