| ID |
611 |
| Title |
Alkenone-Inferred Temperature Reconstruction Data from Lake Xiarinur Sediment in Mid-Latitude China |
| Creator |
Guoqiang Chu |
| Subject |
Paleoclimate Change |
| Publisher |
Xiukuan Zhao |
| Description |
Alkenone-inferred temperature is derived from obtained from the sediment of Lake Xiarinur in mid-latitude China.Freeze-dried samples were soxhlet extracted with dichloromethane: methanol (9:1 v/v) for 48 h. Dried total lipid extracts were redissolved in 1 mL 6% potassium hydroxide in methanol overnight at room temperature to remove interfering alkenonates. The n-hexane extracts were separated into subfractions using a 3 mL Alltech sol-id-phase extraction (SPE) tube containing 0.5 g of silica gel. The samples were then eluted with hexane (F1: hydrocarbons) and 1:1 dichloromethane-hexane (F2: alkenones). The F2 elution containing alkenones was evaporated under a nitrogen stream and redissolved in toluene. Prior to GC analyses, the extracts were derivatized overnight with bis (trimethylsilyl) tri-fluoroacetamide (BSTFA) at room temperature and then analyzed with a SHI-MADZU GC-2010 gas chromatograph, using nitrogen as the carrier gas. |
| Contributor |
|
| Date |
10 June 2018 |
| Type |
Age is presented as ‘before present (1950)’ (BP). The Alkenone-inferred temperatures are expressed in degrees Celsius. |
| Format |
.xlsx, available in Microsoft Excel |
| URL |
http://www.geophys.ac.cn/ArticleData/20240530Alkenone-inferredTemperature.zip |
| DOI |
10.12197/2024GA012 |
| Source |
|
| Language |
eng |
| Relation |
|
| Coverage |
|
| Rights |
Institute of Geology and Geophysics, Chinese Academy of Sciences |
