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The influence of memory, sample size effects, and filter paper material on online laser-based plant and soil water isotope measurements
Cui, JP (Cui, Jiangpeng)1,2; Tian, LD (Tian, Lide)1,3; Gerlein-Safdi, C (Gerlein-Safdi, Cynthia)4; Qu, DM (Qu, Dongmei)1; Tian, LD
Source PublicationRAPID COMMUNICATIONS IN MASS SPECTROMETRY
2017
Volume31Issue:6Pages:509-522
DOI10.1002/rcm.7824
AbstractRATIONALE: The recent development of isotope ratio infrared spectroscopy (IRIS) was quickly followed by the addition of online extraction and analysis systems, making it faster and easier to measure soil and plant water isotopes. However, memory and sample size effects limit the efficiency and accuracy of these new setups. In response, this study presents a scheme dedicated to estimating and eliminating these two effects.
METHODS: Memory effect was determined by injecting two standard waters alternately. Each standard was injected nine times in a row and analyzed using induction module cavity ring-down spectroscopy (IM-CRDS). Memory coefficients were calculated using a new "multistage jump" algorithm. Sample size effects were evaluated by injecting water volumes ranging from 1 mu L to 6 mu L. Finally, the influence of cellulose filter paper on the isotopic measurements, the memory, and the sample size effect was evaluated by comparing it with glass filter paper.
RESULTS: Memory effects were detected for both delta O-18 and delta H-2 values, with the latter being stronger. Isotopic differences between replicates of the same plant or soil sample showed a clear decrease after memory correction. A small water volume effect was found only when the injected water volume was larger than 3 mu L. However, while the correction method performed well for laboratory-made samples, it did not for field samples, due to the heterogeneity of the isotopic composition of the samples. Stronger memory and water volume effects were found for cellulose filter paper.
CONCLUSIONS: The memory coefficients and the water volume-isotope relationship improved the consistency and accuracy of both laboratory and field data. Our results indicate that cellulose filter paper may not be a suitable medium to measure standard waters and evaluate memory and water volume effects. Finally, a detailed correction and calibration protocol is suggested, along with notes on best practices to obtain good-quality IM-CRDS data. Copyright (C) 2017 John Wiley & Sons, Ltd.
Subject Area自然地理学
WOS IDWOS:000394516200005
Language英语
Indexed BySCI
KeywordRATIO INFRARED-SPECTROSCOPY RING-DOWN SPECTROSCOPY MASS-SPECTROMETRY DEUTERIUM EXCESS EXTRACTION DELTA-O-18 DELTA-H-2 TRANSPIRATION OXYGEN HYDROGEN
WOS Research AreaBiochemistry & Molecular Biology; Chemistry; Spectroscopy
WOS SubjectBiochemical Research Methods; Chemistry, Analytical; Spectroscopy ; Biochemistry & Molecular Biology; Chemistry; Spectroscopy
Cooperation Status国际
SubtypeArticle
Citation statistics
Document Type期刊论文
Identifierhttp://ir.itpcas.ac.cn/handle/131C11/8313
Collection图书馆
Corresponding AuthorTian, LD
Affiliation1.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Plateau Environm Change & Land Su, Beijing 100101, Peoples R China.
2.Univ Chinese Acad Sci, Beijing, Peoples R China.
3.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China.
4.Princeton Univ, Dept Civil & Environm Engn, Princeton, NJ 08540 USA.
Recommended Citation
GB/T 7714
Cui, JP ,Tian, LD ,Gerlein-Safdi, C ,et al. The influence of memory, sample size effects, and filter paper material on online laser-based plant and soil water isotope measurements[J]. RAPID COMMUNICATIONS IN MASS SPECTROMETRY,2017,31(6):509-522.
APA Cui, JP ,Tian, LD ,Gerlein-Safdi, C ,Qu, DM ,&Tian, LD.(2017).The influence of memory, sample size effects, and filter paper material on online laser-based plant and soil water isotope measurements.RAPID COMMUNICATIONS IN MASS SPECTROMETRY,31(6),509-522.
MLA Cui, JP ,et al."The influence of memory, sample size effects, and filter paper material on online laser-based plant and soil water isotope measurements".RAPID COMMUNICATIONS IN MASS SPECTROMETRY 31.6(2017):509-522.
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