| 海洋沉积物中氧化亚铁的分析测定 |
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| 引用本文： | 郑凯清,张仲平.海洋沉积物中氧化亚铁的分析测定[J].岩矿测试,1999,18(3):198-200. |
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| 作者姓名： | 郑凯清 张仲平 |
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| 作者单位： | 广州海洋地质实验测试中心,广州,510760 |
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| 摘 要： | 海洋沉积物试样用Ｈ２Ｏ２－ＨＡｃ浸取，用以除去干扰测定ＦｅＯ的锰化合物和硫化珠，并以Ｈ２ＳＯ３－Ｎａ２ＳＯ３混合溶液破坏过乘的Ｈ２Ｏ２，不需过滤分离，即可用ＨＦ－Ｈ２ＳＯ４分解试样，Ｋ２Ｃｒ２Ｏ７标准溶液滴定ＦｅＯ。方法经海洋沉积物国家标准物质分析验证，结果与参考值相符，ＲＳＤ为６．３３％。
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| 关 键 词： | 海洋沉积物 氧化亚铁 过氧化氢 乙酸混合溶液 |
| 修稿时间： | 1998-11-10 |
Determination of Ferrous Oxide in Sea Sediments |
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| ZHENG Kaiqing,ZHANG Zhongping,YE Huadong\=.Determination of Ferrous Oxide in Sea Sediments[J].Rock and Mineral Analysis,1999,18(3):198-200. |
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| Authors: | ZHENG Kaiqing ZHANG Zhongping YE Huadong\= |
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| Abstract: | A method for the determination of ferrous oxide in sea sediments was reported in this paper. The samples were treated with hydrogen peroxide and acetic acid to eliminate the interferences from manganese compounds and sulphide on the determination of ferrous oxide. The excess hydrogen peroxide was removed with H2SO3Na2SO3. After sample decomposition with HFH2SO4, the sample solution was titrated with K2Cr2O7 standard solution. The method was verified by determination of FeO in national standard reference sea sediments. The results are in agreement with certified values with precision of 6.33% RSD (n=10).\=\= |
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| Keywords: | sea sediment ferrous oxide hydrogen peroxideacetic acid mixture |
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