Spectrophotometric analysis using poly( dimethylsiloxane) microfl uidic detectors

Two constructions of microfluidic structures are described in this paper. A fibre optic micro cell for spectrophometric measurements and a micro cell for fluorescence experiments were designed and tested. The structures were made of polymer optical fibres which were incorporated into polymeric material Le. poly( dimethylsiloxane). The structures were tested as detectors in absorbance measurement (solutions of bromothymol blue with different pH were used) and in fluorescence tests (solution of fluoresceine was used).