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镍矿石和镍精矿标准物质研制
引用本文:程志中,刘妹,黄宏库,顾铁新,鄢卫东.镍矿石和镍精矿标准物质研制[J].岩矿测试,2013,32(4):600-607.
作者姓名:程志中  刘妹  黄宏库  顾铁新  鄢卫东
作者单位:中国地质科学院地球物理地球化学勘查研究所,河北廊坊065000;中国地质科学院地球表层碳-汞地球化学循环重点实验室,河北廊坊065000
基金项目:中国地质大调查项目"重要金属矿标准物质研制"工作项目(科[2010]05-09-01)
摘    要:我国镍矿石与镍精矿标准物质较少,镍矿石成分分析标准物质仅有1个,镍含量较高(4.33%),当前已有的标准物质基本用尽,且国际上尚没有镍精矿标准物质.本文研制了3个镍矿石标准物质(GNi-1、GNi-2、GNi-3)和2个镍精矿标准物质(GNi-4和GNi-5).标准物质候选物采自吉林省红旗岭镍矿,将样品粉碎至粒度小于0.074 mm,针对样品硫化物含量较高的特点,在样品加工过程中采用低温和球磨机中充满氩气的保存方法,防止加工过程中产生热量导致硫化物发生氧化,提高样品长期稳定性采用X射线荧光光谱和电感耦合等离子体发射光谱法(ICP-AES)对样品的均匀性进行检验,F的实测值小于临界值,相对标准偏差较小,样品均匀性良好;两年内4次测定的分析结果无方向性变化趋势,统计计算结果显示稳定性良好.19家实验室对此批标准物质进行联合定值,Ni采用经典分光光度法、容量法与重量法测定,微量元素采用ICP-AES和电感耦合等离子体质谱(ICP-MS)等技术测定,依照ISO导则35和国家一级标准物质研制规范,3个镍矿石标准物质给出了Ni、Cu、S等23种组分的标准值与不确定度;2个镍精矿标准物质的19种组分给出标准值与不确定度,4种组分给出参考值.镍矿石标准物质中镍的含量分别为0.11%、0.33%、1.02%;镍精矿标准物质中镍的含量分别为5.93%、9.01%,形成一个从边界品位、工业品位至镍精矿较为完整的含量系列,能够满足镍矿勘查和选冶对标准物质的需求.

关 键 词:镍矿石  镍精矿  标准物质  标准值  不确定度
收稿时间:2012/11/12 0:00:00
修稿时间:2013/3/23 0:00:00

Preparation and Certification of Nickel Ore and Nickel Concentrate Reference Materials
CHENG Zhi-zhong,LIU Mei,HUANG Hong-ku,GU Tie-xin and YAN Wei-dong.Preparation and Certification of Nickel Ore and Nickel Concentrate Reference Materials[J].Rock and Mineral Analysis,2013,32(4):600-607.
Authors:CHENG Zhi-zhong  LIU Mei  HUANG Hong-ku  GU Tie-xin and YAN Wei-dong
Institution:Institute of Geophysical and Geochemical Exploration, China Academy Geological Sciences, Langfang 065000, China;Key Laboratory of Geochemical Cycling of Carbon and Mercury in the Earth's Critical Zone, China Academy Geological Sciences, Langfang 065000, China;Institute of Geophysical and Geochemical Exploration, China Academy Geological Sciences, Langfang 065000, China;Key Laboratory of Geochemical Cycling of Carbon and Mercury in the Earth's Critical Zone, China Academy Geological Sciences, Langfang 065000, China;Institute of Geophysical and Geochemical Exploration, China Academy Geological Sciences, Langfang 065000, China;Key Laboratory of Geochemical Cycling of Carbon and Mercury in the Earth's Critical Zone, China Academy Geological Sciences, Langfang 065000, China;Institute of Geophysical and Geochemical Exploration, China Academy Geological Sciences, Langfang 065000, China;Key Laboratory of Geochemical Cycling of Carbon and Mercury in the Earth's Critical Zone, China Academy Geological Sciences, Langfang 065000, China;Institute of Geophysical and Geochemical Exploration, China Academy Geological Sciences, Langfang 065000, China;Key Laboratory of Geochemical Cycling of Carbon and Mercury in the Earth's Critical Zone, China Academy Geological Sciences, Langfang 065000, China
Abstract:
Keywords:nickel ore  nickel concentrate  reference materials  certified value  uncertainty
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