塞曼原子吸收法测定大洋多金属结核中的铜钴镍  

Determination of Cu, Co, Ni in Polymetallic Nodules by Zeeman Atomic Absorption Spectrophotometry

作　　者：刘昌岭 张红 江志刚 宋苏顷 

机构地区：[1]夏宁地矿部海洋地质研究所

出　　处：《岩矿测试》1997年第2期98-100,108,共4页Rock and Mineral Analysis

摘　　要：报道了以ＨＮＯ３＿ＨＦ＿ＨＣｌＯ４分解多金属结核样品，用日立１８０＿８０偏振塞曼原子吸收分光光度计测定Ｃｕ、Ｃｏ和Ｎｉ的方法。试验了介质及共存元素对测定的影响，选择了最佳测定条件。用该法测定了大洋锰结核标准物质中的Ｃｕ、Ｃｏ、Ｎｉ，结果与标准值符合，且方法已应用于大批量样品分析中。对这些标样６次测定的ＲＳＤ分别是Ｃｕ０４９％～１９９％，Ｃｏ１８６％～２６６％，Ｎｉ０４６％～１９６％。Determination of Cu, Co and Ni in polymetallic nodules by Hitachi 180_80 polarized Zeeman AAS based on sample digestion with HNO 3_HF_HClO 4 are proposed in this paper. The effects of medium and coexistent elements in the solution on determination of Cu, Co and Ni are discussed and determination conditions are optimized. The method has been applied to the determination of Cu, Co and Ni in standard polymetallic nodule reference materials. The RSDs ( n =6) are 0.49%～1.99% for Cu, 1 86%～2 66% for Co, 0 46%～1 96% for Ni respectively. The results are in good agreement with certified values.

关 键 词：塞曼原子吸收 多金属结核 铜 钴 镍 标准物质 

分 类 号：P744.3[天文地球—海洋科学] P575.4