Flow injection analysis (FIA) is a simple, rapid, and versatile technique that
is now firmly established, with widespread application in quantitative
chemical analysis. This is apparent from the number of related papers that
have appeared in the technical press since 1975, and since then the
scope of the method has grown at an unprecedented rate. Over 10,000
papers devoted to FIA have been published in scientific journals up to now
[8], with two papers being published each day. The literature on FIA
doubles approximately every two years, whereas analytical literature as a
whole doubles only every 14 years and general literature every 15.