RETRACTED: Optimization of micro sequential injection analysis (Retracted Article)

A sequential injection analysis (SIA) system with an integrated lab-on-valve manifold has been investigated concerning a spectrophotometric chloride ion assay. By optimizing the procedure parameters of SIA, the concentration of chloride ion can be detected to 45.0 ppb. The assay for higher concentrations of up to 100 ppm was achieved by optimally changing the manipulation conditions and the protocol. Futher, over a 3-decade concentration range of chloride ion can be analyzed quantitatively. The drastic reduction of reagent consumption as the largest advantage of downsizing can also be achieved using the lab-on-valve SIA system. The method described here serves as a typical template for downsizing other assays using the micro total analysis system (mu-TAS).