TOC and dry weight determination

Dry weights were determined by drying 3 to 4 g portions of sediments at 105°C to constant weight. The TOC content of dried particulate matter was measured using a CR 12 LECO carbon analyzer. 

The chemical degradation steps were carried out in two different modes. In a first set aliquots of the preextracted samples were treated seperately with KOH/MeOH, BBr3 and RuO/t. Following, in a second step the preextracted and saponified residues were treated once more with BBr3 or RuO/t. In Fig. 2 the flow scheme of the analytical procedure is given. 

Curie-Point-Pyrolysis-GC-MS with and without TMAH 

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