| Abstract: | Abstract Photometric detection with continuous feed of reagent into the centre of sample flow is described. Performance characteristics of this technique were tested at models without and with chemical reaction. Linear calibration curves were obtained for methylorange (5 x 10?6 - 1 x 10?4 M) and for ammonia reaction with the Nessler's reagent (6 x 10?6 6 x 10?4 M). The technique was applied for the determination of ammonia in drinking water. In this case, the preconcentration step was necessary. |
