IEECAS OpenIR  > 加速器质谱中心
A Comparison of Different Preservation Methods for Nitrogen Isotopes of Soil Extractable NO3(-)
Liu Junchi1,2,3; Liu Weiguo1,4; Hu Jing1
通讯作者Liu Weiguo(liuwg@loess.llqg.ac.cn)
2018-12-01
发表期刊PEDOSPHERE
ISSN1002-0160
卷号28期号:6页码:943-951
摘要Nitrogen (N) isotope ratio (delta N-15) of soil extractable NO(3)(-)plays a pivotal role in the study of N biogeochemical circulation in ecosystems. However, the NO(3)(-)concentration and its isotope composition of soil samples are unstable, making sample storage critical for preserving the N isotope composition of extracted soil Nevertheless, studies on the appropriate selection of storage methods after soil sampling are scarce. In this study, we compared two commonly used methods for storing soil samples and investigated the stability of N isotopes of soil The results demonstrated that no significant changes in the NO(3)(-)concentration and delta N-15 value occurred in the samples stored at -18 degrees C. However, the soil NO(3)(-)concentration markedly increased, and NO3- delta N-15 value significantly changed after air-drying storage. Meanwhile, we also found that NO3- and its delta N-15 were well preserved in the filtered soil extracts after 1 month. In contrast, the NO(3)(-)concentration gradually decreased and the N-15 in NO(3)(-)was gradually enriched in the bactericidal agent-containing soil mixture solution during the storage period. Overall, our results indicated that N isotopes of NO3- could be effectively preserved in frozen-stored soil samples or filtered soil extracts. For field investigations conducted in remote areas and continued for a long-time period (and lacking a refrigerant supply), soil extraction/filtration using a CaSO4-saturated solution may be a superior preparation and storage method for analyzing N isotopes of soil NO3-.
关键词air-drying freezing ion exchange isotopic fractionation nitrogen isotope tracing soil extraction soil storage
DOI10.1016/S1002-0160(17)60412-0
关键词[WOS]SHORT-TERM CHANGES ; MICROBIAL BIOMASS ; NATURAL-ABUNDANCE ; FOREST ; NITRATE ; PLANT ; NITRIFICATION ; STORAGE ; FRACTIONATION ; DELTA-N-15
收录类别SCI ; SCI
语种英语
资助项目Key Deployment Project from Chinese Academy of Sciences[KZZD-EW-04-06] ; National Natural Science Foundation of China[41373022] ; National Basic Research Program of China[2013CB955900]
WOS研究方向Agriculture
项目资助者Key Deployment Project from Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Basic Research Program of China
WOS类目Soil Science
WOS记录号WOS:000456949800010
出版者SCIENCE PRESS
引用统计
被引频次:2[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/14438
专题加速器质谱中心
通讯作者Liu Weiguo
作者单位1.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710075, Shaanxi, Peoples R China
2.Chinese Acad Sci, Key Lab Vertebrate Evolut & Human Origin, Inst Vertebrate Paleontol & Paleoanthropol, Beijing 100044, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Xi An Jiao Tong Univ, Sch Human Settlement & Civil Engn, Xian 710049, Peoples R China
推荐引用方式
GB/T 7714
Liu Junchi,Liu Weiguo,Hu Jing. A Comparison of Different Preservation Methods for Nitrogen Isotopes of Soil Extractable NO3(-)[J]. PEDOSPHERE,2018,28(6):943-951.
APA Liu Junchi,Liu Weiguo,&Hu Jing.(2018).A Comparison of Different Preservation Methods for Nitrogen Isotopes of Soil Extractable NO3(-).PEDOSPHERE,28(6),943-951.
MLA Liu Junchi,et al."A Comparison of Different Preservation Methods for Nitrogen Isotopes of Soil Extractable NO3(-)".PEDOSPHERE 28.6(2018):943-951.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Liu Junchi]的文章
[Liu Weiguo]的文章
[Hu Jing]的文章
百度学术
百度学术中相似的文章
[Liu Junchi]的文章
[Liu Weiguo]的文章
[Hu Jing]的文章
必应学术
必应学术中相似的文章
[Liu Junchi]的文章
[Liu Weiguo]的文章
[Hu Jing]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。