Rapid direct determination of organic carbon and nitrogen in carbonate‐bearing sediments with a Yanaco MT‐5 CHN analyzer
Rapid direct determination of organic carbon and nitrogen in carbonate‐bearing sediments with a Yanaco MT‐5 CHN analyzer
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DOI：
10.4319/lo.1995.40.5.1001
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发表时间：
1995-07
影响因子：
4.5
通讯作者：
M. Yamamuro;H. Kayanne
中科院分区：
文献类型：
--
作者：
M. Yamamuro;H. Kayanne
A rapid technique is presented for measuring organic C and N in carbonate-bearing sediments. Organic C and N were determined with a Yanaco MT-5 CHN analyzer after removing carbonate by acidification of samples in ceramic sample boats with HCI vapor. This procedure eliminates loss of acid-soluble organic matter during carbonate dissolution. The accuracy of this new technique and two earlier methods of determining organic C and N concentrations was verified with standard chemicals and carbonate-bearing sediments (>80 wt% CaCO 3 ). With the new technique there was no contamination or loss of organic C and N. The method is suitable for acidifying sediments with a wide range of carbonate content.
