电感耦合等离子体发射光谱法同时测定铜铅锌矿石中铜铅锌钴镍等元素方法确认

Affirmation of the Method that Simultaneous Determination of Copper,Lead,Zinc,Cobalt and Nickel in Copper,Lead and Zinc Ores by Inductively Coupled Plasma-Atomic Emission Spectrometry

文章在修订GB/T 14353—1993《铜矿石、铅矿石和锌矿石化学分析方法》研究工作中,建立了电感耦合等离子体发射光谱同时测定铜铅锌矿石中铜铅锌钴镍等元素的标准分析方法。通过控制试样量和制备试样溶液的体积,可实现主量元素铜、铅、锌与次量元素钴、镍的同时测定。测定范围为铜0.002%-8.5%,铅0.01%-5%,锌0.005%-3%,钴0.001 5%-0.5%,镍0.003%-0.5%。按照相关国家标准对测量方法与结果的准确度进行8个实验室协同参加的准确度试验,统计参数结果表明在限定水平范围内方法偏倚不显著;利用方法重复性限参数,计算可能产生的最大相对偏差。分析方法精密度满足《地质矿产实验室测试质量管理规范》的要求。

A standard analysis method for simultaneous detecting copper,lead,zinc,cobalt,nickel and other elements by inductively coupled plasma-atomic emission spectrometry（ICP-AES） was developed when improving GB/T 14353—1993,the method for chemical analysis of copper ore,lead ore and zinc ore.The major elements such as copper,lead,zinc and the minor elements of cobalt and nickel can be simultaneous detected by adjusting the test portion amounts and reagent solution volumes.The determination ranges of copper,lead,zinc,cobalt and nickel are respectively 0.002%-8.5%,0.01%-5%,0.005%-3%,0.0015%-0.5% and 0.003%-0.5%.According to relevant national standards,this method was tested by eight cooperation laboratories.Statistical results indicated that the method is impartial within a definitive range.The repeatability limit parameter was used to calculate the possible maximum deviations.The precision of the method satisfied the requirement of ＂The specification of testing quality management for geological laboratoris＂.