A rFIA manifold has been developed for direct analysis of aluminum (Fig. 1). We used a fourchannel peristaltic pump Perimax (Spetec, Germany), equipped with Tygon tubing and a six-port low presure injection valve (Rheodyne, USA) was used to control the flows of reagent and sample solutions. The transport lines and reaction coil were made using 0.8 mm i.d. teflon tubing. Connections were made of polypropylene (Omnifit, UK). A Perkin/Elmer LS-5B (Perkin/Elmer, USA) spectrofluorimeter was used with a flow quartz cell, with 1-cm optical pathlength and 20 ml inner volume (Hellma, Germany). Slit widths were 5 and 10 nm, respectively, for excitation and emission. The rFIA procedure is based on a reagent/buffer (mixture) injection into the flowing sample solution, where aluminum ions form a complex with reagent in the reacting coil; the chelate shows a fluorescence, which is used as an analytical signal.