Direct determination of organic carbon in modern reef sediments and calcareous organisms after dissolution of carbonate |
| |
| Authors: | Mark W Sandstrom Frank Tirendi Alan Nott |
| |
| Institution: | Australian Institute of Marine Science, P.M.B. No. 3, Townsville M.C., Qld. 4810, Australia |
| |
| Abstract: | An improved method for the direct determination of organic carbon in calcareous marine sediments, organisms and particulate matter is described. Samples are dissolved in phosphoric acid to remove carbonates, purged with oxygen to remove CO2, and the resulting acidic solution is analysed for total (dissolved and particulate) organic carbon. The method is rapid, involves minimal sample manipulation, and is both accurate (better than ± 2%) and precise (better than ± 0.2 mg organic carbon/g sediment). The method is especially suitable for modern carbonate sediments which have low levels of predominantly acid-soluble organic carbon. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
