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| Format: | Dataset Open Access |
| Language: | en |
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PANGAEA
2025
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| Online Access: | https://doi.org/10.1594/PANGAEA.977804 |
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| _version_ | 1867171896237228032 |
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| author | Al-Hashem, Ali A Achterberg, Eric Pieter |
| author_facet | Al-Hashem, Ali A Achterberg, Eric Pieter |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Labile and total particulate trace metal concentrations were determined on particles collected from the water column of shelf sections at 16° and 17° S shelf transects on METEOR cruise M135. Samples were collected from the trace metal clean sampling system. Polyethersulfone membrane filters (Sartorius, 0.2 µm) and plastic holders (Swinnex, Nalgene) were pre-cleaned in 1 M HCl followed by de-ionized water, then mounted directly onto the OTE samplers in the trace metal clean laboratory on deck. About 4 L (exact volume recorded) of seawater was passed over the filters. Filters were then rinsed with a few drops of de-ionized water (<2 mL) and stored frozen at -20°C until analysis. Labile and total particulate digestions were conducted in series on the same filters. Filters were leached and digested in perfluoroalkoxy vials (Savillex). Labile particulate metals were determined following a 2-hour weak acid leach (25% by volume acetic acid, Optima grade, Fisher Scientific) with a mild reducing agent (0.02 M hydroxylamine hydrochloride, Sigma TM grade) and a short heating step (10 minutes at 90–95 °C). Total particulate metals were determined following a 15-hour reflux digest at 150°C using a mixture of hydrofluoric acid and nitric acid (50% and 10% by volume, respectively, Optima grade, Fisher Scientific). Metal concentrations were then determined via high resolution inductively coupled plasma-mass spectrometry with calibration via standard additions prepared in a sample-matched matrix. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_977804 |
| institution | PANGAEA |
| language | en |
| publishDate | 2025 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Labile and total particulate element digests from 16° and 17° S shelf transects during METEOR cruise M135 Al-Hashem, Ali A Achterberg, Eric Pieter Aluminium, particulate; Barium, particulate; Bottle number; Cadmium, particulate; Chromium, particulate; Climate - Biogeochemistry Interactions in the Tropical Ocean; Cobalt, particulate; Copper, particulate; CTD/Rosette, ultra clean; CTD-UC; DATE/TIME; DEPTH, water; Event label; Iron, particulate; Labile particulate; LATITUDE; Lead, particulate; LONGITUDE; M135; M135_254-1; M135_259-2; M135_261-1; M135_264-1; M135_266-1; M135_269-1; M135_271-1; M135_273-2; M135_277-1; M135_279-1; M135_281-1; Manganese, particulate; Marine particles; Meteor (1986); Molybdenum, particulate; Nickel, particulate; Oxygen minimum zone; Phosphorus, particulate; Profile ID; Quality flag; Salinity; Sample code/label; SFB754; SFB754/POSTRE-II; Silver, particulate; Standard deviation; Station label; Strontium, particulate; Temperature, water; Thorium, particulate; Titanium, particulate; Trace metal; Tungsten, particulate; Uranium, particulate; Vanadium, particulate; Volume; Zinc, particulate Labile and total particulate trace metal concentrations were determined on particles collected from the water column of shelf sections at 16° and 17° S shelf transects on METEOR cruise M135. Samples were collected from the trace metal clean sampling system. Polyethersulfone membrane filters (Sartorius, 0.2 µm) and plastic holders (Swinnex, Nalgene) were pre-cleaned in 1 M HCl followed by de-ionized water, then mounted directly onto the OTE samplers in the trace metal clean laboratory on deck. About 4 L (exact volume recorded) of seawater was passed over the filters. Filters were then rinsed with a few drops of de-ionized water (<2 mL) and stored frozen at -20°C until analysis. Labile and total particulate digestions were conducted in series on the same filters. Filters were leached and digested in perfluoroalkoxy vials (Savillex). Labile particulate metals were determined following a 2-hour weak acid leach (25% by volume acetic acid, Optima grade, Fisher Scientific) with a mild reducing agent (0.02 M hydroxylamine hydrochloride, Sigma TM grade) and a short heating step (10 minutes at 90–95 °C). Total particulate metals were determined following a 15-hour reflux digest at 150°C using a mixture of hydrofluoric acid and nitric acid (50% and 10% by volume, respectively, Optima grade, Fisher Scientific). Metal concentrations were then determined via high resolution inductively coupled plasma-mass spectrometry with calibration via standard additions prepared in a sample-matched matrix. |
| title | Labile and total particulate element digests from 16° and 17° S shelf transects during METEOR cruise M135 |
| topic | Aluminium, particulate; Barium, particulate; Bottle number; Cadmium, particulate; Chromium, particulate; Climate - Biogeochemistry Interactions in the Tropical Ocean; Cobalt, particulate; Copper, particulate; CTD/Rosette, ultra clean; CTD-UC; DATE/TIME; DEPTH, water; Event label; Iron, particulate; Labile particulate; LATITUDE; Lead, particulate; LONGITUDE; M135; M135_254-1; M135_259-2; M135_261-1; M135_264-1; M135_266-1; M135_269-1; M135_271-1; M135_273-2; M135_277-1; M135_279-1; M135_281-1; Manganese, particulate; Marine particles; Meteor (1986); Molybdenum, particulate; Nickel, particulate; Oxygen minimum zone; Phosphorus, particulate; Profile ID; Quality flag; Salinity; Sample code/label; SFB754; SFB754/POSTRE-II; Silver, particulate; Standard deviation; Station label; Strontium, particulate; Temperature, water; Thorium, particulate; Titanium, particulate; Trace metal; Tungsten, particulate; Uranium, particulate; Vanadium, particulate; Volume; Zinc, particulate |
| url | https://doi.org/10.1594/PANGAEA.977804 |