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Spectrophotometric determination of chloride in waters using a multisyringe flow injection system
journal contribution
posted on 2023-05-20, 10:44 authored by Fernando Maya AlejandroFernando Maya Alejandro, Estela, JM, Cerrda, VA multisyringe flow injection system (MSFIA) with spectrophotometric detection is proposed as a fast, robust and low-reagent consumption system for the determination of chloride (Cl−) in waters. The system is based in the classic reaction of Cl− with Fe3+ and Hg(SCN)2, but due to the hazardous properties of this last reagent, the proposed methodology has been developed with the aim to minimize the consumption of this one, consuming less than 0.05 mg of Hg for a Cl− determination, being the system of this type with the lowest Hg consumption. The linear working range was between 1 and 40 mg L−1 Cl− and the detection limit was 0.2 mg L−1 Cl−. The repeatability (RSD) was 0.8% for a 10 mg L−1 Cl− solution, and the injection throughput was 130 h−1. The proposed system is compared with other chloride monitoring flow systems, this comparison is realized with a point of view of the equilibrium between the obtained analytical features and produced residues toxicity. The proposed system was applied to the determination of Cl− in mineral, tap and well water.
History
Publication title
TalantaVolume
74Pagination
1534-1538ISSN
0039-9140Department/School
School of Natural SciencesPublisher
ElsevierPlace of publication
Amsterdam, NetherlandsRights statement
© 2007 Elsevier B.V. All rights reserved.Repository Status
- Restricted