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Publication - Shipboard analysis of picomolar levels of manganese in seawater by chelating resin concentration and chemiluminescence detection

Doi, T., Obata, H., & Maruo, M., 2004. Shipboard analysis of picomolar levels of manganese in seawater by chelating resin concentration and chemiluminescence detection. Analytical and Bioanalytical Chemist 378 (5), 1288-1293

Abstract

A new shipboard analytical method for determining picomolar levels of manganese in seawater has been developed. The method is based on a combination of chelating resin column extraction and improved chemiluminescence (CL) detection in a closed flow system. In this method, manganese in sample solution is selectively collected on newly-developed iminodiacetate-immobilized chelating resin, and then eluted with acidic solution containing hydrogen peroxide. The resulting eluent is mixed with luminol solution and aqueous ammonia after removal of iron ions by a chelating resin column, and then the mixture is introduced into the CL cell. The manganese concentration is obtained from the CL intensity. The detection limit (3SD) of manganese is 5 pmol L−1 from 9 mL of seawater sample. The method was applied to seawater samples collected at the Okinawa Trough.

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Doi: 10.1007/s00216-003-2483-z | UUID: cdf831d0-6adf-58fe-b7df-34cf1af911d0 | Version: 1 | Added on: 1 May 2017 11:53