A new Ph.D research project was started early October into the Department of Civil, Environmental and Natural Resources Engineering at Luleå University of Technology (LTU) by Sarah CONRAD under the direction of Johan INGRI. The part of this project in which I participed was the determination of the concentration of Fe (II) by flow injection analysis using chemiluminescence in the Bothnia Bay. The missions were to handle the instrument and the software and to prepare also some sample standards for the calibration of the FIA. The stream water is first sampled and filtered. Then the water, containing either just the natural iron in the water or after addition of artificial iron, is analyzed by flow injection analysis in combination with luminol. The results are saved on the laptop and interpreted later. The experiments were performed on both the field and the laboratory of the University. / <p>Validerat; 20131008 (global_studentproject_submitter)</p>