Abstract
Stable carbon isotope ratio of carbon dioxide (δ13CCO2) is used as an important indicator in the researches for global climate change and carbon capture and sequestration technology. The δ13C value has been usually analyzed with Isotope Ratio Mass Spectrometer (IRMS). Recently, the use of Laser Absorption Spectrometry (LAS) is increasing because of the cost efficiency and field applicability. The purpose of this study was to suggest practical procedures to prepare laboratory reference gases for δ13CCO2 analysis using LAS. CO2 gas was adjusted to have the concentrations within the analytical range. Then, the concentration of CO2 was assessed in a lab approved by the Korea Laboratory Accreditation Scheme and the δ13CCO value was measured by IRMS. When the instrument ran over 12 hours, the δ13C values were drifted up to ±10‰ if the concentration of CO2 was shifted up to 1.0% of relative standard deviation. Therefore, periodical investigation of analytical suitability and correction should be conducted. Because δ13CCO2 showed the dependency on CO2 concentration, we suggested the equation for calibrating the concentration effect. After calibration, δ13CCO2 was well matched with the result of IRMS within ±0.52‰.
| Original language | English |
|---|---|
| Pages (from-to) | 537-544 |
| Number of pages | 8 |
| Journal | Economic and Environmental Geology |
| Volume | 50 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 2017 Dec |
Fingerprint
All Science Journal Classification (ASJC) codes
- Environmental Science (miscellaneous)
- Geology
- Economic Geology
Cite this
}
Calibration of δ13C values of CO2 gas with different concentrations in the analysis with laser absorption spectrometry. / Jeong, Taeyang; Woo, Nam C.; Shin, Woo Jin; Bong, Yeon Sik; Choi, Seunghyun; Kim, Youn Tae.
In: Economic and Environmental Geology, Vol. 50, No. 6, 12.2017, p. 537-544.Research output: Contribution to journal › Article
TY - JOUR
T1 - Calibration of δ13C values of CO2 gas with different concentrations in the analysis with laser absorption spectrometry
AU - Jeong, Taeyang
AU - Woo, Nam C.
AU - Shin, Woo Jin
AU - Bong, Yeon Sik
AU - Choi, Seunghyun
AU - Kim, Youn Tae
PY - 2017/12
Y1 - 2017/12
N2 - Stable carbon isotope ratio of carbon dioxide (δ13CCO2) is used as an important indicator in the researches for global climate change and carbon capture and sequestration technology. The δ13C value has been usually analyzed with Isotope Ratio Mass Spectrometer (IRMS). Recently, the use of Laser Absorption Spectrometry (LAS) is increasing because of the cost efficiency and field applicability. The purpose of this study was to suggest practical procedures to prepare laboratory reference gases for δ13CCO2 analysis using LAS. CO2 gas was adjusted to have the concentrations within the analytical range. Then, the concentration of CO2 was assessed in a lab approved by the Korea Laboratory Accreditation Scheme and the δ13CCO value was measured by IRMS. When the instrument ran over 12 hours, the δ13C values were drifted up to ±10‰ if the concentration of CO2 was shifted up to 1.0% of relative standard deviation. Therefore, periodical investigation of analytical suitability and correction should be conducted. Because δ13CCO2 showed the dependency on CO2 concentration, we suggested the equation for calibrating the concentration effect. After calibration, δ13CCO2 was well matched with the result of IRMS within ±0.52‰.
AB - Stable carbon isotope ratio of carbon dioxide (δ13CCO2) is used as an important indicator in the researches for global climate change and carbon capture and sequestration technology. The δ13C value has been usually analyzed with Isotope Ratio Mass Spectrometer (IRMS). Recently, the use of Laser Absorption Spectrometry (LAS) is increasing because of the cost efficiency and field applicability. The purpose of this study was to suggest practical procedures to prepare laboratory reference gases for δ13CCO2 analysis using LAS. CO2 gas was adjusted to have the concentrations within the analytical range. Then, the concentration of CO2 was assessed in a lab approved by the Korea Laboratory Accreditation Scheme and the δ13CCO value was measured by IRMS. When the instrument ran over 12 hours, the δ13C values were drifted up to ±10‰ if the concentration of CO2 was shifted up to 1.0% of relative standard deviation. Therefore, periodical investigation of analytical suitability and correction should be conducted. Because δ13CCO2 showed the dependency on CO2 concentration, we suggested the equation for calibrating the concentration effect. After calibration, δ13CCO2 was well matched with the result of IRMS within ±0.52‰.
UR - http://www.scopus.com/inward/record.url?scp=85044543309&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85044543309&partnerID=8YFLogxK
U2 - 10.9719/EEG.2017.50.6.537
DO - 10.9719/EEG.2017.50.6.537
M3 - Article
AN - SCOPUS:85044543309
VL - 50
SP - 537
EP - 544
JO - Economic and Environmental Geology
JF - Economic and Environmental Geology
SN - 1225-7281
IS - 6
ER -