CHEMINI: A new in situ CHEmical MINIaturized analyzer

To link to full-text access for this article, visit this link: http://dx.doi.org/10.1016/j.dsr.2009.02.002 Byline: R. Vuillemin (a), D. Le Roux (a), P. Dorval (a), K. Bucas (a), J.P. Sudreau (a), M. Hamon (a), C. Le Gall (b), P.M. Sarradin (b) Keywords: In situ analysis; Dissolved iron; Total sulphide; Hydrothermal vent Abstract: 'CHEMINI' is a new instrument developed for the measurement of seawater chemical parameters. It is a mono-parameter in situ chemical analyzer based on flow injection analysis and colorimetric detection. The deep-sea version of CHEMINI combines two modules to perform the analysis of dissolved iron [Fe (II) or Fe (II+III)] and total sulphide (H.sub.2S+HS.sup.-+S.sup.2-) up to 6000m depth. Detection limits are, respectively, 0.3 and 0.1[mu]M for iron and sulphide. The system proved highly reliable during the MoMARETO cruise on the Mid-Atlantic Ridge. The two CHEMINIs were used to describe the chemical environment in 12 mussel beds on the Tour Eiffel hydrothermal edifice. Author Affiliation: (a) IFREMER, TSI, centre de Brest, 29280 Plouzane, France (b) IFREMER, DEEP, centre de Brest, 29280 Plouzane, France Article History: Received 5 June 2008; Revised 20 January 2009; Accepted 1 February 2009