Spectrasol Applications
Sample Type: Zeolite
|
 Preparation: |
Weigh 0.2 gm sample into a pre-tared plastic bottle.
Add 2 mls water + 0.5 ml HNO3 + 8 mls HF + 2 mls HCl.
Swirl to dissolve. Add 50 mls Spectrasol Z-B reagent.
Dilute final solution weight to 100 gms with water.
|
| Results: |
Comparison of ICP results (n = 3) from the Spectrasol preparation
with gravimetric results for a zeolite in-house reference material. |
|
| Analyte |
ICP Analysis |
Gravimetric |
Recovery |
|
(%) |
(%) |
(%) |
|
| SiO2 |
61.6±0.2 |
62.3 |
99 |
| Al2O3 |
22.5±0.1 |
22.5 |
100 |
| SiO2/Al2O3 |
4.65±0.02 |
4.70 |
99 |
|
| Discussion: |
Neutralization of HF using the Spectrasol Z-B reagent allows for
accurate analysis of the SiO2 /Al2O3 ratio. The agreement with gravimetric results proves that HF
has been neutralized without the need for boric acid.
|
| Reference: |
Tatro, M.E., V.M. Giampa and R.J. Collins. Recent advances in the dissolution
of zeolites and coal ash for Flame AA and ICP analysis. Spectroscopy, 4,2,18 (1989). |