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Methods for PCO2 measurement in coral reef. Sangosho ni okeru PCO2 no genba sokutei

Journal Article:

Abstract

This paper introduces an instrument to measure CO2 partial pressure in sea water being developed for coral reef site measurements. The instrument uses a method that sea water is contacted with a gaseous phase via a gaseous body permeating membrane, and CO2 partial pressure in the gaseous phase is measured when CO2s in the sea water and the gaseous phase have reached a dissolution equilibrium, using an adequate analyzer. The gaseous body permeating membrane uses a material with high CO2 permeation rates, such as porous polytetrafluoroethylene. The paper describes a system that applies a gaschromatograph process to analyzing CO2 in the gaseous phase, and an automatic measuring system that utilizes a non-discrete infrared densitometer. Basic experiments are being carried out that are intended to develop a CO2 partial pressure sensor using optic fibers. This is a device to measure CO2 concentration in sea water, in which fluorescent coloring aqueous solution is contacted with sea water via a gaseous body permeation membrane, and change in fluorescence intensity in the said solution as a result of CO2 melting into it from sea water is utilized. 3 refs., 4 figs.
Authors:
Kitano, H; Saito, H; Mito, A; Tamura, N; Takahashi, C [1] 
  1. National Research Laboratory of Metrology, Tsukuba (Japan)
Publication Date:
May 01, 1993
Product Type:
Journal Article
Reference Number:
NEDO-93-930300; EDB-93-148869
Resource Relation:
Journal Name: Chishitsu Nyusu; (Japan); Journal Volume: 465
Subject:
29 ENERGY PLANNING, POLICY AND ECONOMY; 42 ENGINEERING; CORALS; REEFS; INFRARED SPECTROMETERS; CONCENTRATION RATIO; PARTIAL PRESSURE; CARBON DIOXIDE; PRESSURE MEASUREMENT; FLUORESCENCE; GAS CHROMATOGRAPHY; MEMBRANES; OPTICAL FIBERS; SEAWATER; ANIMALS; CARBON COMPOUNDS; CARBON OXIDES; CHALCOGENIDES; CHROMATOGRAPHY; CNIDARIA; COELENTERATA; FIBERS; GEOLOGIC STRUCTURES; HYDROGEN COMPOUNDS; INVERTEBRATES; LUMINESCENCE; MEASURING INSTRUMENTS; OXIDES; OXYGEN COMPOUNDS; SEPARATION PROCESSES; SPECTROMETERS; WATER; 290301* - Energy Planning & Policy- Environment, Health, & Safety- Regional & Global Environmental Aspects- (1992-); 423000 - Engineering- Marine Engineering- (1980-)
OSTI ID:
5948097
Country of Origin:
Japan
Language:
Japanese
Other Identifying Numbers:
Journal ID: ISSN 0009-4854; CODEN: CHNYB7
Submitting Site:
NEDO
Size:
Pages: 48-51
Announcement Date:
Dec 01, 1993

Journal Article:

Citation Formats

Kitano, H, Saito, H, Mito, A, Tamura, N, and Takahashi, C. Methods for PCO2 measurement in coral reef. Sangosho ni okeru PCO2 no genba sokutei. Japan: N. p., 1993. Web.
Kitano, H, Saito, H, Mito, A, Tamura, N, & Takahashi, C. Methods for PCO2 measurement in coral reef. Sangosho ni okeru PCO2 no genba sokutei. Japan.
Kitano, H, Saito, H, Mito, A, Tamura, N, and Takahashi, C. 1993. "Methods for PCO2 measurement in coral reef. Sangosho ni okeru PCO2 no genba sokutei." Japan.
@misc{etde_5948097,
title = {Methods for PCO2 measurement in coral reef. Sangosho ni okeru PCO2 no genba sokutei}
author = {Kitano, H, Saito, H, Mito, A, Tamura, N, and Takahashi, C}
abstractNote = {This paper introduces an instrument to measure CO2 partial pressure in sea water being developed for coral reef site measurements. The instrument uses a method that sea water is contacted with a gaseous phase via a gaseous body permeating membrane, and CO2 partial pressure in the gaseous phase is measured when CO2s in the sea water and the gaseous phase have reached a dissolution equilibrium, using an adequate analyzer. The gaseous body permeating membrane uses a material with high CO2 permeation rates, such as porous polytetrafluoroethylene. The paper describes a system that applies a gaschromatograph process to analyzing CO2 in the gaseous phase, and an automatic measuring system that utilizes a non-discrete infrared densitometer. Basic experiments are being carried out that are intended to develop a CO2 partial pressure sensor using optic fibers. This is a device to measure CO2 concentration in sea water, in which fluorescent coloring aqueous solution is contacted with sea water via a gaseous body permeation membrane, and change in fluorescence intensity in the said solution as a result of CO2 melting into it from sea water is utilized. 3 refs., 4 figs.}
journal = {Chishitsu Nyusu; (Japan)}
volume = {465}
journal type = {AC}
place = {Japan}
year = {1993}
month = {May}
}