Total organic carbon and total nitrogen from DH-7B sediment core from the Dahu Lake, Ilan Plain
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| Natura: | Dataset Open Access |
| Lingua: | en |
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PANGAEA
2025
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| _version_ | 1867170439654014976 |
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| author | Rahman, Abdur Wang, Liang-Chi Kashima, Kaoru Li, Hong-Chun Chen, Huei-Fen Yang, Tien-Nan |
| author_facet | Rahman, Abdur Wang, Liang-Chi Kashima, Kaoru Li, Hong-Chun Chen, Huei-Fen Yang, Tien-Nan |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | A 35-meter-long sediment core (DH-7B) was retrieved from Dahu Lake using a stainless-steel pipe mounted on a floating platform. The core was subsampled at 5-cm intervals with 1-cm thickness for diatom, stable isotope, and trace element analyses. For the analysis of carbon isotopic composition in organic carbon (δ¹³C), powdered samples were decarbonated overnight with HCl. After complete removal of inorganic carbon, the residues were washed with ultrapure water (Milli-Q) by centrifugation three to four times, then dried at 60 °C overnight. The dried samples were encapsulated in tin and combusted at 1000 °C in a Flash 2000 Elemental Analyzer (Thermo Scientific). The resulting CO₂ was analyzed by isotope ratio mass spectrometry (IRMS; Delta V Advantage, Thermo Scientific) via a ConFlo interface using He as the carrier gas. The ¹³C/¹²C ratios were reported in δ notation relative to the Vienna Pee Dee Belemnite (VPDB) standard. The USGS 40 standard (L-glutamic acid, δ¹³C = −26.39 ± 0.04‰; C content = 40.8%) was used to monitor instrument performance. Analytical precision was ±0.1‰ for δ¹³C and <10% for C content. Total nitrogen (N) content was measured simultaneously using the jump method in the same run. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_982475 |
| institution | PANGAEA |
| language | en |
| publishDate | 2025 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Total organic carbon and total nitrogen from DH-7B sediment core from the Dahu Lake, Ilan Plain Rahman, Abdur Wang, Liang-Chi Kashima, Kaoru Li, Hong-Chun Chen, Huei-Fen Yang, Tien-Nan Calendar age; Carbon, organic, total; Carbon, organic, total/Nitrogen, total ratio; Dahu Lake; DEPTH, sediment/rock; DH-7B; Diatom; Elemental Analyzer, Thermo Scientific, Flash 2000; Geochemistry; Isotope Ratio Mass Spectrometer (IRMS), Thermo Scientific, Delta V Advantage [Conflo interface]; Nitrogen, total; Stable isotope; Stainless steel corer; Taiwan; δ13C, organic carbon A 35-meter-long sediment core (DH-7B) was retrieved from Dahu Lake using a stainless-steel pipe mounted on a floating platform. The core was subsampled at 5-cm intervals with 1-cm thickness for diatom, stable isotope, and trace element analyses. For the analysis of carbon isotopic composition in organic carbon (δ¹³C), powdered samples were decarbonated overnight with HCl. After complete removal of inorganic carbon, the residues were washed with ultrapure water (Milli-Q) by centrifugation three to four times, then dried at 60 °C overnight. The dried samples were encapsulated in tin and combusted at 1000 °C in a Flash 2000 Elemental Analyzer (Thermo Scientific). The resulting CO₂ was analyzed by isotope ratio mass spectrometry (IRMS; Delta V Advantage, Thermo Scientific) via a ConFlo interface using He as the carrier gas. The ¹³C/¹²C ratios were reported in δ notation relative to the Vienna Pee Dee Belemnite (VPDB) standard. The USGS 40 standard (L-glutamic acid, δ¹³C = −26.39 ± 0.04‰; C content = 40.8%) was used to monitor instrument performance. Analytical precision was ±0.1‰ for δ¹³C and <10% for C content. Total nitrogen (N) content was measured simultaneously using the jump method in the same run. |
| title | Total organic carbon and total nitrogen from DH-7B sediment core from the Dahu Lake, Ilan Plain |
| topic | Calendar age; Carbon, organic, total; Carbon, organic, total/Nitrogen, total ratio; Dahu Lake; DEPTH, sediment/rock; DH-7B; Diatom; Elemental Analyzer, Thermo Scientific, Flash 2000; Geochemistry; Isotope Ratio Mass Spectrometer (IRMS), Thermo Scientific, Delta V Advantage [Conflo interface]; Nitrogen, total; Stable isotope; Stainless steel corer; Taiwan; δ13C, organic carbon |
| url | https://doi.org/10.1594/PANGAEA.982475 |