Abstract
A method is proposed for solvent extraction in continuous flow injection analysis. Optimal tube lengths, pumping rates, extraction efficiency, sample volumes, etc. are discussed. The thiocyanate method for the determination of molybdenum in plant material is used to demonstrate the feasibility of the method. A phase-separation chamber and a proportional injector are described. The proposed method can be used to determine molybdenum in plant ash solutions down to 0.05 ppm with good reproducibility and accuracy, at a rate of about 30 samples per hour.
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