These data include sediment polycyclic aromatic hydrocarbon (PAH) concentrations. These data were collected on multiple cruises in throughout the Atlantic; specifically, in the Amazon Delta (EN-480; July 2010), Sierra Leone Rise (EN-481; August 2010), Niger Delta (GeoB 4901, GeoB 4903, GeoB 4904, GeoB 4905, GeoB 4907, and GeoB 4908; February/March 1998), Senegal Delta (GeoB 9501; April/May 2003), and Northwest Argentina Basin (GeoB 2814; July/August 1994). Sediments were collected using multi-co...
Show moreSediment samples were collected via a 4-barrel multi-corer (R/V Endeavor) and box corer (GeoB; samples previously collected from the Department of Geosciences at Bremen University, see MARUM GeoB Core Repository https://www.marum.de/en/Infrastructure/MARUM-GeoB-Core-Repository.html). Sediments collected on the R/V Endeavor were segmented into 1-2 cm sections, dried in a drying oven (35°C) and homogenized via mortar and pestle; sediments from GeoB had previously been segmented into 1-10cm sections, freeze-dried and ground with a mortar and pestle.
Instruments:
Homogenized sediments were extracted with an accelerated solvent extractor (Dionex ASE 350) in 6 cycles at 150°C using a 50/50 mix of hexane and acetone. Prior to extraction, d10-acenapthene, d10-phenanthrene, d12-chrysene, and d12-perylene were added to each sample to assess recovery. Solvent extracts were evaporated to 1 mL using a rotary evaporator and purified through a column containing 2 mg of activated silica with 45 mL of a 30/70 solvent mixture of dichloromethane and hexane. Extracts were evaporated with N2 gas to 50 μL and an injection surrogate of p-terphenyl was added before analysis on an Agilent 6890 Series gas chromatograph coupled to a 5973 Mass Selection Detector (GC-MS).
Location:
Amazon Delta (approximately: 4 N, 47 W; 2400-3500m); Sierra Leone Rise (approximately: 7 N, 20 W; 2800-3800m), Niger Delta (approximately: 1 N, 8 E; 1200-3000m), Senegal Delta (approximately: 17 N, 17 W; 330 m), and Northwest Argentina Basin (approximately: 37 S, 39 W; 5000m)
Cruise or Deployment:R/V Endeavor (EN-480, EN-481; July/August 2010); GeoB (4901, 4903, 4904, 4905, 4907, 4908; February/March 1998), GeoB (9501; April/May 2003), GeoB (2814, July/August 1994)
* R/V Endeavor cruises were attached to this dataset as "Deployments."
* Collection information for the GeoB samples previously collected from the Department of Geosciences at Bremen University can be found in table "Atlantic Sediment Cruise Information" in the Supplemental Files section of this dataset.
Lohmann, R., St. Laurent, K. A. (2023) Atlantic sediment polycyclic aromatic hydrocarbon (PAH) concentrations from samples collected using a multi-corer and box corer from multiple cruises throughout the Atlantic between 1994 and 2010. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2023-09-14 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.908357.1 [access date]
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