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Publication - Fluorimetric determination of Al in seawater by flow-injection with in-line preconcentration

Resing, J.A. & Measures, C., 1994. Fluorimetric determination of Al in seawater by flow-injection with in-line preconcentration. Analytical Chemistry 66 (22), 4105-4111
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Abstract

A highly sensitive method for the shipboard determination of Al in seawater by now injection analysis (FIA) has been developed. The method employs in-line preconcentration of Al onto a column of resin-immobilized 8-hydroxyquinoline. The Al is subsequently eluted into the FIA system from the resin with acidified seawater. The eluted Al reacts with lumogallion to form a chelate, which is detected by its fluorescence. The fluorescence is enhanced similar to 5-fold by the addition of a micelle-forming detergent, Brij-35. The method has a detection limit of similar to 0.15 nM and a precision of 1.7% at 2.4 nM. The method has a cycle time of similar to 3 min and can be readily automated. The speed, ease of use, and relative freedom from contamination artifacts makes this method ideal for shipboard determination of Al in seawater.

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Doi: 10.1021/ac00094a039 | UUID: 7f7fc58f-b2cd-58a7-a1b3-3d3b7757ac3a | Version: 1 | Added on: 26 April 2017 17:14