Advances in Earth Science ›› 2006, Vol. 21 ›› Issue (8): 863-869. doi: 10.11867/j.issn.1001-8166.2006.08.0863

• Articles • Previous Articles     Next Articles

Microelectrodes for in Situ Chemical Measurements in Sediments

Xu Kunming,Hu Ronggang   

  1. Environmental Science Research Center, Xiamen University, Xiamen 361005
  • Received:2006-03-22 Revised:2006-04-28 Online:2006-08-15 Published:2006-08-15

Xu Kunming,Hu Ronggang. Microelectrodes for in Situ Chemical Measurements in Sediments[J]. Advances in Earth Science, 2006, 21(8): 863-869.

Microelectrodes for in situ chemical measurements in sediments are powerful techniques that cannot be substituted by alternative methods and are receiving increasing attentions from scientific community. This paper introduces three major electrochemical categories of microelectrodes that have practical applications in quantifying sediment chemistry, and cover the working principles, construction procedures, and applications of pH microelectrode, pCO2 microelectrode, sulfide selective microelectrode, oxygen membrane microelectrode, and Hg-Au voltammetric microelectrode in sediments. In particular, this paper describes the electrochemical properties of Iridium oxides pH microelectrodes and Hg-Au microelectrodes constructed in the laboratory and provides in details technicalities for measuring redox chemical species in sediments by voltammetry. It is believed that microelectrode applications have deepened biogeochemical study in sediments.

No related articles found!
Full text