Abstract
A novel ligand exchange method for on-line gas-diffusion flow injection (GD-FI) determination of weak acid dissociable (WAD) cyanide has been successfully developed using a binary ligand combination of 0.10% thiourea and 0.10% pentaethylenehexamine. Complete WAD cyanide recovery with insignificant contribution from the dissociation of stable metal cyanide complexes (non-WAD complexes) has been achieved in the concentration range from 3μg L-1 to 10mgL-1 cyanide. The proposed GD-FI method offers considerable advantages over the existing standard methods for determining WAD cyanide, as it provides an analysis rate of 60 samples h-1 with a satisfactory reproducibility (average RSD=1.0% at n=3) and can be fully automated. A very good agreement between the proposed method and the standard distillation method has been observed when both methods have been applied to the determination of WAD cyanide in samples from the gold mining industry.
| Original language | English |
|---|---|
| Pages (from-to) | 103-107 |
| Number of pages | 5 |
| Journal | Microchemical Journal |
| Volume | 111 |
| DOIs | |
| Publication status | Published - Jul 2013 |
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
-
SDG 9 Industry, Innovation, and Infrastructure
Keywords
- Flow injection analysis
- Gas diffusion
- Ligand exchange
- Weak acid dissociable cyanide
Fingerprint
Dive into the research topics of 'Online ligand exchange in the determination of weak acid dissociable cyanide by gas diffusion-flow injection analysis'. Together they form a unique fingerprint.Cite this
- APA
- Author
- BIBTEX
- Harvard
- Standard
- RIS
- Vancouver