Oil, refined product, and pyrogenic hydrocarbons are the most frequently discovered contaminants in the environment. To effectively determine the fate of spilled oil in the environment and to successfully identify source(s) of spilled oil and petroleum products is, therefore, extremely important in many oil-related environmental studies and liability cases. This article briefly reviews the recent development of chemical analysis methodologies which are most frequently used in oil spill characterization and identification studies and environmental forensic investigations. The fingerprinting and data interpretation techniques discussed include oil spill identification protocol, tiered analytical approach, generic features and chemical composition of oils, effects of weathering on hydrocarbon fingerprinting, recognition of distribution patterns of petroleum hydrocarbons, oil type screening and differentiation, analysis of "source-specific marker" compounds, determination of diagnostic ratios of specific oil constituents, stable isotopic analysis, application of various statistical and numerical analysis tools, and application of other analytical techniques. The issue of how biogenic and pyrogenic hydrocarbons are distinguished from petrogenic hydrocarbons is also addressed.
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http://dx.doi.org/10.1016/S0025-326X(03)00215-7 | DOI Listing |
Sci Rep
January 2025
Department of Botany, Government College Women University, Sialkot, Pakistan.
The phytochemical fingerprinting that add to the nutritional and nutraceutical value of the fruits during the ripening stages is beneficial for human consumption. Therefore, ripening-dependent changes in phytochemical content and antioxidant activities of mango (Mangifera indica L.) cultivar Dusehri at various ripening stages were evaluated.
View Article and Find Full Text PDFInt J Mol Sci
November 2024
Edmond H. Fischer Signal Transduction Laboratory, School of Life Sciences, Jilin University, Changchun 130012, China.
Obesity, characterized by abnormal or excessive fat accumulation, has become a chronic degenerative health condition that poses significant threats to overall well-being. Pharmacological intervention stands at the forefront of strategies to combat this issue. Recent studies, notably by Umut Ozcan's team, have uncovered the remarkable potential of Celastrol, a small-molecule compound derived from the traditional Chinese herb thunder god vine (Tripterygium wilfordii) as an anti-obesity agent.
View Article and Find Full Text PDFMolecules
December 2024
School of Pharmacy and Pharmaceutical Sciences, Panoz Institute, and Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin 2, D02 PN40 Dublin, Ireland.
is a lesser-known plant species belonging to the genus that grows in Kazakhstan. The aim of this study was to characterize the composition of the ethanolic, water, and hydroethanolic extracts from the aerial parts of by HPLC-ESI-QTOF-MS/MS to isolate the major compound isoquercitrin by HSCCC (High-Speed Counter-Current Chromatography) and to determine the cytotoxicity and anti-inflammatory potential of the extracts produced with this plant. Fingerprinting of the analyzed extracts showed the presence of a multitude of metabolites comprising polyphenols, organic acids, and coumarins, and only trace quantities of cardiac glycosides in the analyzed samples.
View Article and Find Full Text PDFArch Environ Contam Toxicol
December 2024
Department of Watershed Management Engineering, Faculty of Natural Resources and Marine Science, Tarbiat Modares University, Noor, Iran.
Oil spills and tarballs are significant pollutants in marine environments, and identifying their sources is crucial for mitigating environmental impacts. This study aims to determine the primary sources of petroleum spills and tarballs along the shores of Genaveh (northwest of the Persian Gulf) by employing chemical fingerprinting techniques and biomarkers. Specifically, petroleum hydrocarbons were analyzed in 19 tarball samples, 13 surface sediment samples from the Genaveh coast, and reference oil samples from 21 offshore oil platforms located in the Bahregan, Khark, Lavan, Siri, and Hendurabi regions.
View Article and Find Full Text PDFRapid Commun Mass Spectrom
February 2025
College of Pharmacy and Nutrition, University of Saskatchewan, Saskatoon, Saskatchewan, Canada.
Background: Analysis of the phytocannabinoids holds significant importance because of their various pharmacological properties and potential therapeutic applications. Tandem mass spectrometry (MS/MS) coupled with electrospray ionization in positive ion mode is employed in this study to describe the collision-induced dissociation (CID) behavior of a series of common phytocannabinoids with the aim of establishing a generalized MS/MS fingerprint.
Materials And Methods: Eight phytocannabinoids, namely, ∆-tetrahydrocannabinol (THC), cannabidiol (CBD), cannabichromene (CBC), cannabigerol (CBG), tetrahydrocannabivarin (THCV), 11-hydroxy-Δ-tetrahydrocannabinol (11-OH-THC), 6-hydroxy-cannabidiol (6-OH-CBD), and 7-hydroxy-cannabidiol (7-OH-CBD), were studied.
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