中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 地质与地球物理研究所
  3. 中国科学院地质与地球物理研究所
  4. 中国科学院新生代地质与环境重点实验室
A new method to remove biogenic silica from lake sediments by chemical dissolution coupled with sonication

文献类型：期刊论文

作者Fu, Sida1; Li, Jie1; Rioual, Patrick2,3; Wang, Jingkang1; Wang, Luo2
刊名JOURNAL OF PALEOLIMNOLOGY
出版日期2023-12-02
页码14
ISSN号0921-2728
关键词Diatom dissolution Removal efficiency Ultrasound vibration Alkaline solution Pre-treatment for grain-size analysis
DOI10.1007/s10933-023-00305-9
英文摘要The grain-size distribution of lake sediments is a crucial proxy for paleoclimate reconstruction, as it is closely related to the transport dynamics of clastic materials from the surrounding land. However, the presence of biogenic silica, particularly remains of diatom frustules, can significantly bias the grain-size distribution of lake-sediment samples. To remove this component, an alkaline solution, usually consisting of sodium carbonate, is commonly used during sample preparation. However, the efficiency of this method has not been fully verified under the microscope and with statistical tests. This study aims to assess the efficiency of removing diatoms from sediment samples under different concentrations and treatment durations of Na2CO3 solution, and with and without sonication. The removal efficiency was assessed using microscope examination. Two sets of sediment samples from Huguang Maar Lake with high contents of diatoms but different species compositions were used. Results show that increasing sodium carbonate concentration and treatment duration improved the removal efficiency. A treatment with 2 mol L-1 Na2CO3 solution coupled with ultrasound vibrations for 4 h was found to be the most effective method for removing biogenic silica from the lake-sediment samples that were investigated. Differences in the removal efficiency between the two samples might be due to the different dominant diatom species in the samples. The new method provides a more reliable and effective procedure for removing diatoms from lake-sediment samples.
WOS关键词SURFACE SEDIMENTS ; OPAL ; ACCUMULATION ; PRESERVATION ; TRANSPORT ; CLIMATE ; DIATOMS ; RATIOS ; RECORD
资助项目National Natural Science Foundation of China ; Key Program of National Natural Science Foundation of China[41931181] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB26000000] ; [42271087] ; [41772379] ; [41372372] ; [41572348]
WOS研究方向Environmental Sciences & Ecology ; Geology ; Marine & Freshwater Biology
语种英语
出版者SPRINGER
WOS记录号WOS:001112282000001
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Program of National Natural Science Foundation of China ; Key Program of National Natural Science Foundation of China ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Program of National Natural Science Foundation of China ; Key Program of National Natural Science Foundation of China ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Program of National Natural Science Foundation of China ; Key Program of National Natural Science Foundation of China ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Program of National Natural Science Foundation of China ; Key Program of National Natural Science Foundation of China ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences
源URL[http://ir.iggcas.ac.cn/handle/132A11/111144]  
专题地质与地球物理研究所_中国科学院新生代地质与环境重点实验室
通讯作者Li, Jie
作者单位1.China Univ Geosci, Sch Earth Sci & Resources, Beijing 100083, Peoples R China
2.Chinese Acad Sci, Key Lab Cenozo Geol & Environm, Inst Geol & Geophys, Beijing 100029, Peoples R China
3.Chinese Acad Sci, Ctr Excellence Life & Paleoenvironment, Beijing 100044, Peoples R China
推荐引用方式
GB/T 7714		 Fu, Sida,Li, Jie,Rioual, Patrick,et al. A new method to remove biogenic silica from lake sediments by chemical dissolution coupled with sonication[J]. JOURNAL OF PALEOLIMNOLOGY,2023:14.
APA Fu, Sida,Li, Jie,Rioual, Patrick,Wang, Jingkang,&Wang, Luo.(2023).A new method to remove biogenic silica from lake sediments by chemical dissolution coupled with sonication.JOURNAL OF PALEOLIMNOLOGY,14.
MLA Fu, Sida,et al."A new method to remove biogenic silica from lake sediments by chemical dissolution coupled with sonication".JOURNAL OF PALEOLIMNOLOGY (2023):14.

入库方式： OAI收割

来源：地质与地球物理研究所

浏览0
下载0
收藏0
其他版本

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。