The influence of memory, sample size effects, and filter paper material on online laser-based plant and soil water isotope measurements
文献类型：期刊论文
| 作者 | Qu, DM (Qu, Dongmei)1; Cui, JP (Cui, Jiangpeng)1,2; Tian, LD (Tian, Lide)1,3; Gerlein-Safdi, C (Gerlein-Safdi, Cynthia)4; Tian, LD |
| 刊名 | RAPID COMMUNICATIONS IN MASS SPECTROMETRY
 |
| 出版日期 | 2017 |
| 卷号 | 31期号:6页码:509-522 |
| 关键词 | RATIO INFRARED-SPECTROSCOPY RING-DOWN SPECTROSCOPY MASS-SPECTROMETRY DEUTERIUM EXCESS EXTRACTION DELTA-O-18 DELTA-H-2 TRANSPIRATION OXYGEN HYDROGEN |
| DOI | 10.1002/rcm.7824 |
| 文献子类 | Article |
| 英文摘要 | RATIONALE: 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. |
| 学科主题 | 自然地理学 |
| WOS研究方向 | Biochemistry & Molecular Biology; Chemistry; Spectroscopy |
| 语种 | 英语 |
| WOS记录号 | WOS:000394516200005 |
| 源URL | [http://ir.itpcas.ac.cn/handle/131C11/8313]  |
| 专题 | 青藏高原研究所_图书馆 |
| 通讯作者 | Tian, LD |
| 作者单位 | 1.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. |
| 推荐引用方式 GB/T 7714 | Qu, DM ,Cui, JP ,Tian, LD ,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 | Qu, DM ,Cui, JP ,Tian, LD ,Gerlein-Safdi, C ,&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 | Qu, DM ,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. |
入库方式： OAI收割
来源：青藏高原研究所
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