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| Main Authors: | , , , , |
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| Format: | Dataset Open Access |
| Language: | en |
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PANGAEA
2024
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| Online Access: | https://doi.org/10.1594/PANGAEA.967364 |
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| _version_ | 1867171333137235968 |
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| author | Novak, Joseph B Caballero-Gill, Rocio P Rose, Rebecca Herbert, Timothy D Dowsett, Harry J |
| author_facet | Novak, Joseph B Caballero-Gill, Rocio P Rose, Rebecca Herbert, Timothy D Dowsett, Harry J |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Here we present concentration and mass accumulation rate of C37 alkenones in discrete samples from ODP site 883. Approximately 1–4 g of sediment was freeze-dried and homogenized prior to extraction with a Dionex 200 Accelerated Solvent Extractor using 100% dichloromethane. Prior to quantification, the total lipid extract was evaporated under N2 and redissolved in 200 μL toluene spiked with n-hexatriacontane (C36) and n-heptatriacontane (C37) standards. Alkenone concentrations were calculated by comparison of C37:2 and C37:3 alkenone peak areas to the peak areas of the C36 and C37 internal standards determined by an Agilent Technologies 6890 gas chromatograph flame ionization detector (GC-FID), with an Agilent Technologies DB-1 column (60 m, 0.32 mm diameter, 0.10 mm film thickness). 1 μL of total lipid extract was injected at an initial temperature of 90°C, increasing to 255°C at 40°C/min, then to 300°C at 1°C/min, ramping to 320°C at 10°C/min, and ending with an isothermal hold at 320°C for 11 minutes. 228 of 504 samples were analyzed at least in duplicate, yielding a mean standard deviation of 0.017 pmol•mg-1 or 9.2 ng*g-1. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_967364 |
| institution | PANGAEA |
| language | en |
| publishDate | 2024 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Alkenone concentration of ODP Site 145-883 Novak, Joseph B Caballero-Gill, Rocio P Rose, Rebecca Herbert, Timothy D Dowsett, Harry J 145-883B; 145-883C; Accumulation rate, alkenone C37; AGE; Age model; Alkenone, C37, per unit sediment mass; Alkenone, C37, standard deviation; Alkenones; Benthic foraminifera assemblages; Benthic foraminiferal stable isotopes; Calcium Carbonate content; Calculated; Composite splice; Depth, composite; DEPTH, sediment/rock; diatoms; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Event label; Gas Chromatograph, Agilent 7890; Joides Resolution; Leg145; North Pacific Ocean; Ocean Drilling Program; ODP; ODP 883; ODP 887; Sample code/label; Sedimentation rate; Stable carbon isotopes δ13C; stable oxygen isotopes; Subarctic North Pacific; Uk'37 sst and C37total Here we present concentration and mass accumulation rate of C37 alkenones in discrete samples from ODP site 883. Approximately 1–4 g of sediment was freeze-dried and homogenized prior to extraction with a Dionex 200 Accelerated Solvent Extractor using 100% dichloromethane. Prior to quantification, the total lipid extract was evaporated under N2 and redissolved in 200 μL toluene spiked with n-hexatriacontane (C36) and n-heptatriacontane (C37) standards. Alkenone concentrations were calculated by comparison of C37:2 and C37:3 alkenone peak areas to the peak areas of the C36 and C37 internal standards determined by an Agilent Technologies 6890 gas chromatograph flame ionization detector (GC-FID), with an Agilent Technologies DB-1 column (60 m, 0.32 mm diameter, 0.10 mm film thickness). 1 μL of total lipid extract was injected at an initial temperature of 90°C, increasing to 255°C at 40°C/min, then to 300°C at 1°C/min, ramping to 320°C at 10°C/min, and ending with an isothermal hold at 320°C for 11 minutes. 228 of 504 samples were analyzed at least in duplicate, yielding a mean standard deviation of 0.017 pmol•mg-1 or 9.2 ng*g-1. |
| title | Alkenone concentration of ODP Site 145-883 |
| topic | 145-883B; 145-883C; Accumulation rate, alkenone C37; AGE; Age model; Alkenone, C37, per unit sediment mass; Alkenone, C37, standard deviation; Alkenones; Benthic foraminifera assemblages; Benthic foraminiferal stable isotopes; Calcium Carbonate content; Calculated; Composite splice; Depth, composite; DEPTH, sediment/rock; diatoms; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Event label; Gas Chromatograph, Agilent 7890; Joides Resolution; Leg145; North Pacific Ocean; Ocean Drilling Program; ODP; ODP 883; ODP 887; Sample code/label; Sedimentation rate; Stable carbon isotopes δ13C; stable oxygen isotopes; Subarctic North Pacific; Uk'37 sst and C37total |
| url | https://doi.org/10.1594/PANGAEA.967364 |