| 两种测定海洋沉积物中总有机碳方法的比较 |
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| 引用本文： | 黄颖华,张浩. 两种测定海洋沉积物中总有机碳方法的比较[J]. 广西科学院学报, 2013, 29(4): 227-229 |
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| 作者姓名： | 黄颖华 张浩 |
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| 作者单位： | [1]国家海洋局南海环境监测中心,广东广州510300 [2]国家海洋局珠海海洋环境监测中心,广东珠海519000 |
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| 摘 要： | 为了筛选出优越的测定海洋沉积物中有机碳的方法,分别用重铬酸钾氧化-还原容量法（简称重铬酸钾法）和高温催化燃烧-非色散红外测定法（简称高温催化燃烧法）测定海洋沉积物中总有机碳的含量.比较分析得出：高温催化燃烧法测定结果的相对偏差较小,测值较集中,回收率比重铬酸钾法的高.说明高温催化燃烧法用来测定海洋沉积物中总有机碳含量的准确性、稳定性和精密度都较重铬酸钾法好.
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| 关 键 词： | 海洋沉积物 总有机碳 高温催化燃烧法 重铬酸钾法 |
| 收稿时间： | 2013-06-10 |
| 修稿时间： | 2013-06-25 |
Comparison of Two Methods for Determining Total Organic Carbon Content in Marine Sediment |
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| HUANG Ying-hua and ZHANG Hao. Comparison of Two Methods for Determining Total Organic Carbon Content in Marine Sediment[J]. Journal of Guangxi Academy of Sciences, 2013, 29(4): 227-229 |
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| Authors: | HUANG Ying-hua and ZHANG Hao |
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| Affiliation: | 1. South China Sea Environmental Monitoring Center, SOA, Guangzhou, Guangdong, 510300, China 2. Zhu Hal Sea Environmental Monitoring Center, SOA, Zhuhai, Guangdong, 519000, China) |
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| Abstract: | Total organic carbon in marine sediment was analyzed by potassium dichromate redox-volumetry method （potassium dichromate method for short） and high temperature catalytic combustion non-dispersion infrared method （high temperature catalytic combustion method for short） respectively. After comparison, the results showed that high temperature catalytic combustion method is less relative deviation, more centralized numerical value and higher recovery rate. This indicated that the accuracy, stability and precision of high tempera- ture catalytic combustion method for determining total organic carbon in marine sediment was better than that of potassium dichromate method. |
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| Keywords: | marine sediment total organic carbon high temperature catalytic combustionmethod potassium dichromate method |
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