Abstract:

This dataset consists of hydrocarbon measurements in sediment cores collected aboard R/V Justo Sierra cruise JS-0815 in the southern Gulf of Mexico from 2015-07-31 to 2015-08-08. The dataset contains the date, location and depth where the sediment cores were collected and the concentration of polycyclic aromatic hydrocarbon (PAHs) and biomarkers (hopanes, steranes, alkanes) analyzed at 5 mm intervals. The measurements were done following the method outlined in Romero et al., 2015 and using GC/MS/MS/MRM (gas chromatography with tandem mass spectrometry, operated in multiple reaction monitoring mode) on an Agilent 7680B gas chromatograph coupled with an Agilent 7010 triple quadrupole mass spectrometer. Cruise documentation was provided for the R/V Justo Sierra cruise JS-0815. The cruise was led by chief scientists Dr. Patrick Schwing and Dr. David Hollander.

Suggested Citation:

Romero, Isabel. 2019. Hydrocarbon concentration data from sediment cores collected aboard R/V Justo Sierra cruise JS-0815 in the southern Gulf of Mexico from 2015-07-31 to 2015-08-08. Distributed by: GRIIDC, Harte Research Institute, Texas A&M University–Corpus Christi. doi:10.7266/n7-ynsd-gk73

Publications:

Schwing, P. T., Hollander, D. J., Brooks, G. R., Larson, R. A., Hastings, D. W., Chanton, J. P., … Langenhoff, A. (2019). The Sedimentary Record of MOSSFA Events in the Gulf of Mexico: A Comparison of the Deepwater Horizon (2010) and Ixtoc 1 (1979) Oil Spills. Deep Oil Spills, 221–234. doi:10.1007/978-3-030-11605-7_13

Purpose:

The goal of this cruise was to characterize the distribution and fate of oiled sediment at sites on the continental shelf and slope of the Southern Gulf of Mexico with reference to the Ixtoc blowout (1979-1980).

Data Parameters and Units:

Concentration of 2-ring PAHs and biomarkers in units of ng g-1. Site names include the core name (location) and the depth interval for the sediment core. Target compounds are 2-ring PAHs: Naphthalene (N) and alkylated homologues (N C1-C4); 3-ring: Acenaphthylene (ACL), Acenaphthene (ACE), Fluorene (F) and alkylated homologues (F1,F2), Dibenzothiophene (D), Phenanthrene (P), Anthracene (AN), and their alkylated homologues (P/AN C1-C4, D C1-C2), 4-ring: Fluoranthene (FL), Pyrene (PY), Benz[a]anthracene (BAA), Chrysene (C), and their alkylated homologues (FL/PY C1-C4, BAA/C C1-C4), 5-ring: Benzo[b]fluoranthene (BBF), Benzo[k]fluoranthene (BKF), Benzo[a]pyr- ene (BAP), Dibenz[a,h]anthracene (DA), and alkylated homologues (BP/PER C1-C4), and 6-ring: Indeno[1,2,3-cd]pyrene (ID), Benzo[ghi]perylene (BGP). Target biomarkers: Steranes (C27-C29), Hopanes (C23-C32), Hopanes (C33-C35), n-alkane (C12), n-alkane (C13), n-alkane (C14), n-alkane (C15), n-alkane (C16), pristine, n-alkane (C17), n-alkane (C18), phytane, n-alkane (C19), n-alkane (C20), n-alkane (C21), n-alkane (C22), n-alkane (C23), n-alkane (C24), n-alkane (C25), n-alkane (C26), n-alkane (C27), n-alkane (C28), n-alkane (C29), n-alkane (C30), n-alkane (C31), n-alkane (C32), n-alkane (C33), n-alkane (C34), n-alkane (C35), n-alkane (C36), n-alkane (C37).

Methods:

GC/MS/MS/MRM; gas chromatography with tandem mass spectrometry, operated in multiple reaction monitoring mode.

Instruments:

Agilent 7680B gas chromatograph coupled with an Agilent 7010 triple quadrupole mass spectrometer.

Provenance and Historical References:

Romero, I.C., P.T. Schwing, G.R. Brooks, R.A. Larson, D.W. Hastings, B.P. Flower, E.A. Goddard, and D.J. Hollander. (2015). Hydrocarbons in Deep-Sea Sediments following the 2010 Deepwater Horizon Blowout in the Northeast Gulf of Mexico. PLoS ONE, 10(5), e0128371. doi:10.1371/journal.pone.0128371

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