Application of flow-injection analysis as process analyzers

Abstract

Flow-injection analysis has developed into a powerful tool for not only substituting tedious manual procedures, but also revolutionizing conventional operations in the analytical laboratory. The advantages and disadvantages of flow-injection analysis is discussed briefly. Different quantitative evaluations are investigated to cover the theoretical background of this technique. The influence of various hydrodynamic and geometric factors on dispersion are discussed. Attention is given to the design of the flow-injection system, including instrumental set-up and computerized control and data acquisition. In-line liquid-liquid extraction and dialysis techniques are described. A method for in-line flow injection extraction preconcentration through a passive hydrophilic membrane to determine total phenols in oil is proposed. Methods for the determination of ketones and aldehydes in water and oils are described as well as methods for the determination of alcohols in water and oil.