Environmental Assessment of Aromatic Hydrocarbons-Contaminated Sediments of the Mexican Salina Cruz Bay |
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| Authors: | C González-Macías I Schifter D B Lluch-Cota L Méndez-Rodríguez S Hernández-Vázquez |
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| Institution: | (1) Dirección de Seguridad y Medio Ambiente, Instituto Mexicano del Petróleo, Eje Central Lázaro Cárdenas No. 152, San Bartolo Atepehuacan, México, México, D.F., 07730, Mexico;(2) Centro de Investigaciones Biológicas del Noroeste, S.C. Mar Bermejo No. 195. Playa Palo de Santa Rita, La Paz, BCS, 23090, Mexico |
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| Abstract: | Concentrations of total aromatic hydrocarbons and extractable organic matter in the water column and sediment were determined
in samples collected in the course of the last 20 years from the Salina Cruz Harbor, México, to assess the degree of organic
contamination. In sediments, organic compounds accumulate in shallow areas mostly associated with extractable organic matter
and fine fractions. Calculated geocumulation index and enrichment factors suggest that contamination could be derived from
anthropogenic activities attributed to harbor and ship scrapping activities, as well as transboundary source. Concentration
of total aromatic hydrocarbons (as chrysene equivalents) ranged from 0.01 to 534 μg l−1 in water, and from 0.10 to 2,160 μg g−1 in sediments. Total aromatic concentration of 5 μg g−1 is proposed as background concentration. |
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| Keywords: | Total aromatic hydrocarbon Surface sediments Bay of Salina Cruz Geoaccumulation Enrichment factors |
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