气候变化领域集成服务门户(CCPortal): Organic contamination in online laser-based plant stem and leaf water isotope measurements for pre-extracted samples

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DOI	10.1080/10256016.2021.1883010
	Organic contamination in online laser-based plant stem and leaf water isotope measurements for pre-extracted samples
	Cui, Jiangpeng; Tian, Lide; Yu, Wusheng
通讯作者	Cui, JP (通讯作者)
发表日期	2021
ISSN	1025-6016
EISSN	1477-2639
起始页码	262
结束页码	270
卷号	57 期号:3
英文摘要	Water stable isotopes have been widely used as natural tracers to investigate soil-plant-atmosphere interactions. Recent developments in induction module cavity ring-down spectroscopy (IM-CRDS) have made it possible to rapidly complete isotope analyses, and to combust co-extracted organic compounds at the same time. However, the agreement between IM-CRDS and isotope ratio mass spectrometry (IRMS) analyses has generally been poor and was primarily attributable to spectral interference of IM-CRDS. Here we evaluated the impacts of organic contamination on the isotope ratios using IM-CRDS with two different methods. No spectral interference was observed for solid samples measured directly by IM-CRDS, whereas clear organic contamination occurred in isotope analyses for pre-extracted plant stem and leaf samples. Our results demonstrate that IM-CRDS can fully combust co-extracted organic compounds by in-line oxidation in the direct measurement of solid samples, although this may not guarantee that the IM-CRDS can obtain better isotopic data than IRMS. It may be risky to evaluate the performance of IM-CRDS by measuring pre-extracted water samples because cryogenic vacuum distillation is likely to introduce extra organic compounds, which may not be fully removed during subsequent IM-CRDS measurement. In addition, spectral variables are useful for post-processing corrections.
英文关键词	Contamination; ecohydrology; hydrogen-2; IM-CRDS; IRMS; leaves; plants; oxygen-18; water
语种	英语
WOS研究方向	Chemistry ; Environmental Sciences & Ecology
WOS类目	Chemistry, Inorganic & Nuclear ; Environmental Sciences
WOS记录号	WOS:000618995600001
来源期刊	ISOTOPES IN ENVIRONMENTAL AND HEALTH STUDIES
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/260275
推荐引用方式 GB/T 7714	Cui, Jiangpeng,Tian, Lide,Yu, Wusheng. Organic contamination in online laser-based plant stem and leaf water isotope measurements for pre-extracted samples[J]. 中国科学院青藏高原研究所,2021,57(3).
APA	Cui, Jiangpeng,Tian, Lide,&Yu, Wusheng.(2021).Organic contamination in online laser-based plant stem and leaf water isotope measurements for pre-extracted samples.ISOTOPES IN ENVIRONMENTAL AND HEALTH STUDIES,57(3).
MLA	Cui, Jiangpeng,et al."Organic contamination in online laser-based plant stem and leaf water isotope measurements for pre-extracted samples".ISOTOPES IN ENVIRONMENTAL AND HEALTH STUDIES 57.3(2021).