J Korean Soc Environ Anal Search

CLOSE


Journal of the Korean Society for Environmental Analysis 2018;21(4):229-236.
Inter-laboratory Comparison of Stable Carbon and Nitrogen Isotopic Composition Data Using Elemental Analyzer-isotope Ratio Mass Spectrometers
Inter-laboratory Comparison of Stable Carbon and Nitrogen Isotopic Composition Data Using Elemental Analyzer-isotope Ratio Mass Spectrometers
김정현1, 강수진2, 봉연식3, 박광규4, 강태우5, 박용세6, 김다해1, 최승현3, 주영지1, 최보형2, 남승일1, 이상모6, 신경훈2
1한국해양과학기술원 부설 극지연구소
2한양대학교
3한국기초과학지원연구원
4한국해양과학기술원
5국립환경과학원
6서울대학교
Abstract
In this study, inter-laboratory comparison was done using elemental analyzer-isotope ratio mass spectrometers (EA-IRMSs) to determine carbon and nitrogen contents as well as stable carbon and nitrogen isotopic compositions (δ13C and δ15N) of five environmental samples containing lake and marine sediments, higher plant leaves, and fish muscle, and one organic analytical standard (Protein (Casein) Standard OAS). Five national laboratories participated in this comparison study, and each laboratory analyzed all five samples and the analytical standard. Results showed that variations in total organic carbon (TOC) and total nitrogen (TN) contents as well as δ13CTOC and δ15NTN values among the laboratories were large compared to the analytical uncertainties. The results highlighted the inhomogeneity of the test samples and thus, the need to select suitable standard reference materials for future inter-laboratory studies. Further inter-laboratory comparison exercises could promote good measurement practices in the acquisition of stable carbon and nitrogen isotopic composition data.
Key Words: Inter-laboratory comparison, Stable carbon isotope (δ13C), Stable nitrogen isotope (δ15N)


ABOUT
ARTICLE CATEGORY

Browse all articles >

BROWSE ARTICLES
EDITORIAL POLICY
FOR CONTRIBUTORS
Editorial Office
Hansin B/D 305 MapoDeae-ro 12, Mapo-Goo, Seoul, 04175 Korea
Tel: +82-2-704-4801    Fax: +82-2-704-4802    E-mail: ksfea7044801@gmail.com                

Copyright © 2021 by Korea Society of Environmental Analysis. All rights reserved.

Developed in M2PI

Close layer
prev next