Extractable organic matter in urban stormwater runoff. 2. Molecular characterization

Sedimentary rocks as sources of ancient organic carbon to the ocean: An investigation through Δ14C and δ13C signatures of organic compound classes

“…The river suspended samples examined in the present study were collected in February and March (Table 2) toward the end of the wet season, and hence are least likely to have been impacted by the seasonal flushing effect. Last, the d 13 C signatures of our lipid extracts are 1 -3% enriched relative to those reported for urban runoff in the nearby Los Angeles watershed that was found to be contaminated by anthropogenic petroleum residues [Eganhouse et al, 1981;Eganhouse, 1982]. We conclude that the low D 14 C signatures of the extractable lipid fraction were most likely due to the persistence of bitumen originating from natural fossil sources within the drainage basin.…”

Studies on polycyclic aromatic hydrocarbons in surface sediments of Mithi River near Mumbai, India: Assessment of sources, toxicity risk and biological impact

“…The dominance of four and three rings PAHs was also observed in the sediments and soils of Hangzhou City, China (Chen et al, 2004), in sediments from San Francisco Bay (Pereira et al, 1996) and in the sediment collected along the Harbour line, of Mumbai, India (Dhananjayan et al, 2012). Pyrolysis/combustion of fossil materials yields such PAH assemblages, which are subsequently introduced into the marine environment by coastal and river runoff (Eganhouse et al, 1981;Hoffman et al, 1984).…”

Organic and Inorganic Compounds in Limestone Weathering Crusts from Cathedrals in Southern and Western Europe

“…In the mixture of extracted compounds, only the c 1 4 , (220, CZZ, and C31 ketones were identified. A series of ketones ranging from C12 to C Z~ was found in trace amounts in urban stormwater runoff (16). The CzZ and CB1 ketones from the Mechelen extract could originate from plant waxes, while those encountered in Sevilla (C14 and CZO) could be generated by B-oxidation of fatty acids, followed by decarboxylation or direct oxidation of hydrocarbons.…”