Light hydrocarbons: C1-C6
GC-FID
Heavy hydrocarbons: C6+
GC/PID-FID; GC/MS
Synchronous Scanned Fluorescence (SSF)
Trace elements (e.g., I, V, Ni, Mo )
Partial or total extractions
ICP-MS/ES finish
Redox conditions
Fe2+/Fe3+ ratio
O2/CO2
Eh, pH, conductivity
Hydrocarbon-consuming bacteria
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