Abstract
Portable, high sensitive and continuous measurable ammonia monitoring system was developed. The system was composed of the main unit, the gas pumping unit and the computer as an operation console. The main unit and the gas pumping unit system was 45 cm width × 30 cm depth × 30 cm height, fully portable. The total system performance was evaluated using an ammonia/nitrogen standard gas. The lower limit of detection (LOD) calculated from the conditions of S/N = 2 was less than 0.1 ppb. And then it was confirmed that our system can be available for a real sample application.