Major and trace elements in sediments from Deming Lake, MN, USA (2022-2023)
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| Natura: | Dataset Open Access |
| Lingua: | en |
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PANGAEA
2024
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| _version_ | 1867172201372844032 |
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| author | Rico, Kathryn Ostrander, Chadlin Heard, Andrew Swanner, Elizabeth |
| author_facet | Rico, Kathryn Ostrander, Chadlin Heard, Andrew Swanner, Elizabeth |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Sediment samples from the lake bottom were collected from the boat in May 2022. Ten samples capturing a few centimeters depth of the upper sediment layer were collected from depths between 1 m and 16.5 m depth along a transect from the northern shore and slope of the lake using a Wildco Ekman dredge. Additionally, one gravity core was collected at 4 m depth that yielded seven discrete samples from depths between 0 and 7 cm into the sediment column. All sediment samples were transferred into acid-cleaned 50 mL centrifuge tubes aboard the boat and frozen on return from the field for transportation. These samples were subsequently freeze-dried on return to WHOI using a benchtop freeze dryer with a Polytetrafluoroethylene coated stainless steel collector (Labcono FreeZone). Once dry, each sample was ground to a fine powder using a FRITSCH Mini-Mill Pulverisette 23 with zirconium oxide bowl and grinding balls. Approximately 50 mg of bulk sediment powders were weighed into Savillex Teflon reactors and digested in 2 mL concentrated HF + 1 mL concentrated HNO3. These samples were then sequentially dried down and digested in aqua regia followed by 1:1 concentrated HNO3:H2O2 to destroy organics. Samples were dried down, fluxed in concentrated HNO3, redried, and constituted in 5 mL of 2 % HNO3. Aliquots (<1 %) of the sediment bulk digests in 2 % HNO3 were then taken, diluted, and analyzed for major, minor, and trace elements on the Thermo iCAP-Q ICP-MS at the WHOI Plasma Facility. Indium (In) was added to samples at a concentration of 1 ng/g prior to analyses to monitor and correct for instrument drift by normalizing to In intensities. Concentrations were calculated using a five-point calibration curve obtained by fitting of ion beam intensities measured for serial dilutions of a gravimetrically prepared multi-element standard. The relative standard deviation (RSD) for five measurements of each sample was ~10% on the iCAP-Q. The accuracy and precision of similar concentration measurements on iCAP-Q at WHOI have previously been determined to be ± 5-10 % (1SD) based on comparison with USGS reference materials AGV-1, AGV-2, BHVO-1, BHVO-2, BIR-1, and BCR-2 prepared and analyzed as unknowns during earlier runs (Jochum et al., 2016; Shu et al., 2017). |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_971078 |
| institution | PANGAEA |
| language | en |
| publishDate | 2024 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Major and trace elements in sediments from Deming Lake, MN, USA (2022-2023) Rico, Kathryn Ostrander, Chadlin Heard, Andrew Swanner, Elizabeth Aluminium; Barium; Cadmium; Calcium; Cerium; Chromium; Cobalt; Copper; DATE/TIME; Deming Lake, Minnesota; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; DL_May2022_Sed-Core; DL_May2022_Sed-Transect; DL_TraceElements_2022-2023; Dysprosium; Erbium; Europium; Event label; Gadolinium; GC; Gravity corer; Inductively coupled plasma mass spectrometer (ICP-MS), Thermo Fisher Scientific Inc., iCAP Q; Iron; Lake; Lake, water depth; Lake sediment; lake water; Lanthanum; LATITUDE; Lead; Lithium; LONGITUDE; Lutetium; Magnesium; Manganese; Molybdenum; Multi-Parameter Water Quality Meter, YSI, ProDSS; Neodymium; Nickel; Phosphorus; Praseodymium; Precambrian analog; ProDSS; Samarium; Sampling on land; Scandium; snow-ice; Strontium; Terbium; Thallium; Thorium; Thulium; Titanium; trace elements; Uranium; Vanadium; Wildco Ekman dredge; Ytterbium; Yttrium; Zinc Sediment samples from the lake bottom were collected from the boat in May 2022. Ten samples capturing a few centimeters depth of the upper sediment layer were collected from depths between 1 m and 16.5 m depth along a transect from the northern shore and slope of the lake using a Wildco Ekman dredge. Additionally, one gravity core was collected at 4 m depth that yielded seven discrete samples from depths between 0 and 7 cm into the sediment column. All sediment samples were transferred into acid-cleaned 50 mL centrifuge tubes aboard the boat and frozen on return from the field for transportation. These samples were subsequently freeze-dried on return to WHOI using a benchtop freeze dryer with a Polytetrafluoroethylene coated stainless steel collector (Labcono FreeZone). Once dry, each sample was ground to a fine powder using a FRITSCH Mini-Mill Pulverisette 23 with zirconium oxide bowl and grinding balls. Approximately 50 mg of bulk sediment powders were weighed into Savillex Teflon reactors and digested in 2 mL concentrated HF + 1 mL concentrated HNO3. These samples were then sequentially dried down and digested in aqua regia followed by 1:1 concentrated HNO3:H2O2 to destroy organics. Samples were dried down, fluxed in concentrated HNO3, redried, and constituted in 5 mL of 2 % HNO3. Aliquots (<1 %) of the sediment bulk digests in 2 % HNO3 were then taken, diluted, and analyzed for major, minor, and trace elements on the Thermo iCAP-Q ICP-MS at the WHOI Plasma Facility. Indium (In) was added to samples at a concentration of 1 ng/g prior to analyses to monitor and correct for instrument drift by normalizing to In intensities. Concentrations were calculated using a five-point calibration curve obtained by fitting of ion beam intensities measured for serial dilutions of a gravimetrically prepared multi-element standard. The relative standard deviation (RSD) for five measurements of each sample was ~10% on the iCAP-Q. The accuracy and precision of similar concentration measurements on iCAP-Q at WHOI have previously been determined to be ± 5-10 % (1SD) based on comparison with USGS reference materials AGV-1, AGV-2, BHVO-1, BHVO-2, BIR-1, and BCR-2 prepared and analyzed as unknowns during earlier runs (Jochum et al., 2016; Shu et al., 2017). |
| title | Major and trace elements in sediments from Deming Lake, MN, USA (2022-2023) |
| topic | Aluminium; Barium; Cadmium; Calcium; Cerium; Chromium; Cobalt; Copper; DATE/TIME; Deming Lake, Minnesota; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; DL_May2022_Sed-Core; DL_May2022_Sed-Transect; DL_TraceElements_2022-2023; Dysprosium; Erbium; Europium; Event label; Gadolinium; GC; Gravity corer; Inductively coupled plasma mass spectrometer (ICP-MS), Thermo Fisher Scientific Inc., iCAP Q; Iron; Lake; Lake, water depth; Lake sediment; lake water; Lanthanum; LATITUDE; Lead; Lithium; LONGITUDE; Lutetium; Magnesium; Manganese; Molybdenum; Multi-Parameter Water Quality Meter, YSI, ProDSS; Neodymium; Nickel; Phosphorus; Praseodymium; Precambrian analog; ProDSS; Samarium; Sampling on land; Scandium; snow-ice; Strontium; Terbium; Thallium; Thorium; Thulium; Titanium; trace elements; Uranium; Vanadium; Wildco Ekman dredge; Ytterbium; Yttrium; Zinc |
| url | https://doi.org/10.1594/PANGAEA.971078 |