Development of in situ pH sensor using ISFET

Author

Shitashima, Kiminon ; Kyo, Masanori ; Koike, Yuichi ; Henmi, Hideaki

Author_Institution

Environ. Sci. Dept., Central Res. Inst. of Electr. Power Ind., Chiba, Japan

fYear

2002

fDate

6/24/1905 12:00:00 AM

Firstpage

106

Lastpage

108

Abstract

The development of in situ chemical sensor plays a key role in understanding of chemical and biological processes in the ocean. The pH of the seawater is the important factor that controls the. The ISFET is a semiconductor that can measure hydrogen ion concentration in aqueous media. We developed the in situ pH sensor that employs the ISFET as a pH electrode, and the Cl-ISE as a reference electrode. The pH sensor has a quick response (within a few second), high accuracy (±0.005pH) and pressure-resistant performance.

Keywords

electrochemical sensors; geochemistry; ion sensitive field effect transistors; oceanographic equipment; pH measurement; seawater; ISFET; aqueous media; biological processes; chemical processes; hydrogen ion concentration; in situ chemical sensor; in situ pH sensor; ocean; pH electrode; seawater; semiconductor detector; Atmospheric measurements; Chemical analysis; Chemical and biological sensors; Chemical processes; Chemical sensors; Chemical technology; Electrodes; Marine technology; Oceans; Sea measurements;

fLanguage

English

Publisher

ieee

Conference_Titel

Underwater Technology, 2002. Proceedings of the 2002 International Symposium on

Print_ISBN

0-7803-7397-9

Type

conf

DOI

10.1109/UT.2002.1002403

Filename

1002403