Contents
Direct detection of water-dissolved ammonia using paper-based analytical devices / Yeong Beom Cho ; Duc Cuong Nguyen ; Si Hiep Hua ; Yong Shin Kim 1
Abstract 1
1. INTRODUCTION 1
2. EXPERIMENTAL 2
2.1. Chemicals and materials 2
2.2. Preparation of the modified Berthelot reagent 2
2.3. Fabrication of NH₃ PAD 2
2.4. Colorimetric ammonia detection 3
3. RESULTS AND DISCUSSION 3
3.1. Optimization of the detection zone 3
3.2. Optimization of a fluidic channel for an efficient flow 4
3.3. Detection characteristics of ammonia in water 6
4. CONCLUSIONS 7
REFERENCES 8