Development of a deep-sea in situ Mn analyzer and its application for hydrothermal plume observation

This paper presents the first in situ flow-through chemical analyzer using a chemiluminescence (CL) method in the deep sea to a depth of 5200 m. The analyzer, called GAMOS (Geochemical Anomalies Monitoring System), determines the concentration of dissolved manganese continuously using a H2O2-luminol CL method. A detection limit of 0.23 nM was obtained. The GAMOS was used successfully for hydrothermal plume observation. (C) 2001 Elsevier Science B.V. All rights reserved.