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Inter-laboratory comparison of stable carbon and nitrogen isotopic composition data using elemental analyzer-isotope ratio mass spectrometers

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Title
Inter-laboratory comparison of stable carbon and nitrogen isotopic composition data using elemental analyzer-isotope ratio mass spectrometers
Other Titles
EA-IRMS를 활용한 탄소 및 질소 안정동위원소비 비교 연구
Authors
Kim, Junghyun
Kang, Sujin
Bong, Yeon-Sik
Park, Kwangkyu
Kang, Tae-Woo
Park, Yong-Se
Kim, Dahae
Choi, Seunghyun
Joo, Young Ji
Choi, Bohyung
Nam, Seung-il
Lee, Sang-Mo
Shin, Kyung-Hoon
Subject
Chemistry
Keywords
inter-laboratory comparison; stable carbon isotope (δ13C); stable nitrogen isotope (δ15N)
Issue Date
2018-12
Citation
Kim, Junghyun, et al. 2018. "Inter-laboratory comparison of stable carbon and nitrogen isotopic composition data using elemental analyzer-isotope ratio mass spectrometers". JOURNAL OF ENVIRONMENTAL ANALYSIS, HEALTH AND TOXICOLOGY, 21(4): 229-236.
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.
URI
https://repository.kopri.re.kr/handle/201206/10863
DOI
http://www.ksfea.or.kr/sub5_1.asp
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