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Figure 15 | Geochemical Transactions

Figure 15

From: Characterisation of dissolved organic compounds in hydrothermal fluids by stir bar sorptive extraction - gas chomatography - mass spectrometry. Case study: the Rainbow field (36°N, Mid-Atlantic Ridge)

Figure 15

These three TD-GC-MS TIC traces are a representative choice of the results obtained after Twister® extraction of the fluids from the Rainbow hydrothermal vent field in 2005 (bottom), 2007 (center) and 2008 (top). Numbers stand for the carbonated chain length of n-alkanes (full squares), branched alkanes (empty squares) and n-carboxylic acids (full triangles). Cycloalkanes (full circles) are distinguished by the number of carbon in the cycle (first figure) and the number of carbon of the side chain(s) (following figure(s)). T, Pol, N, A, P and Py, and are short for toluene, phenol, naphthalene, acenaphthene, phenanthrene, and pyrene. Cyclooctaatomic sulfur (S8) was pointed because the peak was major. Highlighted in grey is the characteristic Twister’s signature. Monoaromatic hydrocarbons appeared too small and were not pointed on the TICs for sake of clarity.

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