海洋沉积物中氧化亚铁的分析测定

Determination of Ferrous Oxide in Sea Sediments

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％。

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 ferro