ASPECTS OF SIGNAL-PROCESSING IN FLOW-INJECTION SYSTEMS

Much valuable information is contained in the output signal of a detec tion system in flow-injection analysis. The form of the peak obtained and deviations therefrom are functions of the type of detector and man ifold used. The shape and quality of the analytical signal obtained ma y have a major influence on the performance of a flow-injection analys er. There are a number of factors to consider in the accumulation and processing of such signals. Among these are noise, signal-to-noise rat io and signal transport. A number of signal-processing techniques for the filtering of noise are described in this review. Multianalyte info rmation from a single sample injection is addressed using a multivaria te calibration technique. Response surface mapping has proved to be a useful way of visualizing the effect of multivariable optimization.