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- W1970622251 abstract "Abstract In order to investigate the fate and transport processes of hydrocarbons in estuarine and coastal environments, we have undertaken a study of different hydrocarbon species in both dissolved and particulate forms. This two years study has been conducted in the Loire estuary at different reference stations (riverine, injection of sewage effluents, maximum turbidity zone, open sea) and at different seasons corresponding to various hydrological (high and low water) and biological conditions. Quantitative and qualitative analysis of hydrocarbons has been carried out by GC, GC/MS, focusing on n-alkanes and n-alkenes. Overall dissolved n-alkane concentrations vary in a narrow range, from 0.1 to 1.2μgl−1. Dissolved n-alkanes show fairly constant distribution patterns, with a slight odd/even carbon chain predominance, extending from n-C16 up to n-C42, maximizing at n-C27, n-C29 and n-C31. CPI values are low (1–1.7) and may indicate the predominance of two sources, petroleum products and microbial and algal production superimposed on higher plant waxes. The pathway of particulate hydrocarbons is completely different and depends on hydrological conditions. Detritic terrigenous compounds are accumulated in the maximum turbidity zone (n-alkane concentrations can reach 20μigl−1). This zone appears as an efficient filter between the internal estuary and the open coastal sea, where n-alkanes show concentrations not exceeding 1 μgl−1, and low CPI values. This zone is also characterized by a remarkable microbial degradation and/or removal of the most labile compounds such as biogenic n-alkenes and phytadienes." @default.
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- W1970622251 date "1986-01-01" @default.
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- W1970622251 title "Dissolved and Particulate Hydrocarbons in the Loire Estuary, from the Riverine Zone to the External Estuary: Budget at Different Seasons" @default.
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- W1970622251 doi "https://doi.org/10.1080/03067318608076444" @default.
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