Marine geomorphology

  • HAN Chen-hua ,
  • PAN Yi-wen ,
  • YE Ying
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  • Department of Ocean Science and Engineering, Zhejiang University, Hangzhou 310027, China

Received date: 2008-11-15

  Revised date: 2009-03-02

  Online published: 2010-02-05

Abstract

A good method to find hydrothermal vents is to detect the abnormal concentration of dissolved inorganic carbon in deep ocean. The authors have designed a dissolved inorganic carbon microelectrode based on polydimethylsiloxane(PDMS)gel and Zinc-Aluminium-hydrotalcite (Zn-Al-LDH) ion carrier complex membrane, which can be used to detect deep-ocean inorganic carbon abnormality. This dissolved inorganic carbon microelectrode is miniature, and can conveniently be integrated in the same probing cavity with pH microelectrode, salinity meter, temperature sensor, oxidation-reduction potential sensor, etc. to detect various in-situ signals. It has been tested in the laboratory condition, together with Ag/AgCl reference microelectrode, connecting with the input of Keithley 6517A high-resistant potentiometer. It was shown that the signals responded well to different concentrations of NaHCO3 solutions, with 30-60 second c.a. response time and a limiting range between 10-1 and 10-4 mol?L–1.

Cite this article

HAN Chen-hua , PAN Yi-wen , YE Ying . [J]. Journal of Tropical Oceanography, 2009 , 28(4) : 35 -41 . DOI: 10.11978/j.issn.1009-5470.2009.04.035

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