Automatisierte Labormethoden zur Wasserbeschaffenheitsuntersuchung unter Anwendung der kontinuierlichen Fließanalytik

The analytical measurement technique presented consists of the ADM 300 flow stream system with two-channel operation and the AE 4 evaluation unit for four-channel operation. Selected parameters for important components of water quality are presented, such as those used in preferred combined methods in the practice of the laboratories of water and wastewater monitoring. The following components with detection limits in mg/l are concerned: ammonium 0.04, nitrite 0.07, nitrate 0.32, N_org. 0.35, o-PO₄ 0.02, total PO₄ 0.08, SiO₂ 0.08, sum of cations 0.79 mmole/l; Mn 0.02, Fe 0.34, Cl^? 15.4 and UV-absorbance 0.01 cm^?1. The detailed examination of the techniques on samples of waters has proved a statistically secured agreement of the analytical results with the results of the standard methods, with the simultaneous increase of the number of analyses by 100 … 300= and a saving of chemicals of 80= compared with the manual analysis. The device system has the interfaces required for the further data processing by means of PC. The boundary conditions for the application of this technique, especially the necessary lot sizes and laboratory organization, are referred to.