QUANTITATIVE MEASUREMENTS OF WATER AND CA RBON CONCENTRATIONS IN NATURAL BASALTIC GLASSES BY INFRARED-SPECTROSCOPY .1. CARBON

Authors
JENDRZEJEWSKI N JAVOY M TRULL T
Citation
N. Jendrzejewski et al., QUANTITATIVE MEASUREMENTS OF WATER AND CA RBON CONCENTRATIONS IN NATURAL BASALTIC GLASSES BY INFRARED-SPECTROSCOPY .1. CARBON, Comptes rendus de l'Academie des sciences. Serie II. Sciences de la terre et des planetes, 322(8), 1996, pp. 645-652
Citations number
17
Categorie Soggetti
Geosciences, Interdisciplinary
Journal title
Comptes rendus de l'Academie des sciences. Serie II. Sciences de la terre et des planetes → ACNP
ISSN journal
12518050
Volume
322
Issue
8
Year of publication
1996
Pages
645 - 652
Database
ISI
SICI code
1251-8050(1996)322:8<645:QMOWAC>2.0.ZU;2-L
Abstract
This study presents a new calibration for the analysis of dissolved ca rbon in natural basaltic glasses by FTIR. Five experimentally CO2 equi librated basaltic glasses (34-146 ppm C) give a perfectly linear relat ionship calibration (r(2)=0.99) between manometric C contents and abso rbance peak heights at both the 1,522 and 1,435 cm(-1) carbonate ion b and absorption peaks. A molar absorptivity of 398 +/- 10 l.mol(-1).cm( -1) was determined for the 1,522 cm(-1) peak. An identical value (397/-7) was obtained from manometric and infra-red measurements on 23 nat ural samples. These values are more precise, more reliable, and somewh at higher than the value (375 +/- 20) suggested previously by Fine and Stolper (1985/1986).