Simple convenient method for measuring injection volumes in flow injection and sequential injection analysis

Abstract

A simple, convenient method for determining injection volumes in flow injection and sequential injection analysis is presented. It is based on comparing the dilution of an injected dye with a standard calibration curve. The proposed colour method gave the volume of the whole injection device more accurately than methods where the inner dimensions of the injection device are not precisely known. The colour method is within the 95% confidence level with an RSD of 0.8%.