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Research Article |

Polychlorinated Biphenyls Content in Surface Sediments from Dakar Coast (Senegal)

Surface sediments proceeding from the coast of Dakar (Senegal) were analyzed by Gas chromatography coupled with a Mass Spectrometer (GC-MS) in order to evaluate the contamination of polychlorinated (PCB). After weighing, each mass is placed in a centrifugal tube with 10 ml of acetonitrile solvent solution (ACN) to separate the aqueous phase from the organic phase. The extraction phase with QUECHERS is followed by a purification with DSPE RESTEK salt. This salt is composed of 1.2 g MgSO4 + 400 mg PSA + 400 mg C18 for the separation of analytes. For GC-MS kiln storage, the temperature gradient is maintained from 50 to 330°C for 40 minutes with different slopes. PCB126 displays the lowest detection and quantification limits of 0.000639 and 0.001917 ng/g, respectively. PCB18 has the highest detection and quantification limits, with values of 0.01504 and 0.04512 ng/g, respectively. The result obtained show that the PCB dioxin likes are more important in sediment. The PCB-DL ranged 5.931 (Hann) to 25.752 µg/Kg (Ngor). The PCBi ranged 2.415 (Hann) to 4.284 µg/Kg (Soumbedioune) at the beach of Hann, the concentration of individual PCB ranged 0.007 (PCB118) to 5.073 µg/Kg (PCB167). At Soumbedioune, the individual PCB levels ranged 0.004 (PCB118) to 5.365 µg/Kg (PCB167) and at Ngor, the variation is 0.005 (PCB118) to 12.29 µg/Kg (PCB167). The analysis of principal components shows that two distinct groups which the same contamination profile whose elements have strong correlations 0.992 for PCB189-PCB101 and PCB189-PCB81.

Sediment, Polychlorinated Biphenyls, Dakar Coast, Contamination

APA Style

Cisse, D., Ndiaye, B., Dione, C. T., Diagne, I., Ndiaye, M., et al. (2023). Polychlorinated Biphenyls Content in Surface Sediments from Dakar Coast (Senegal). Science Journal of Analytical Chemistry, 11(3), 34-39. https://doi.org/10.11648/j.sjac.20231103.12

ACS Style

Cisse, D.; Ndiaye, B.; Dione, C. T.; Diagne, I.; Ndiaye, M., et al. Polychlorinated Biphenyls Content in Surface Sediments from Dakar Coast (Senegal). Sci. J. Anal. Chem. 2023, 11(3), 34-39. doi: 10.11648/j.sjac.20231103.12

AMA Style

Cisse D, Ndiaye B, Dione CT, Diagne I, Ndiaye M, et al. Polychlorinated Biphenyls Content in Surface Sediments from Dakar Coast (Senegal). Sci J Anal Chem. 2023;11(3):34-39. doi: 10.11648/j.sjac.20231103.12

Copyright © 2023 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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