铜、铅、锌和镍精矿.检查取样偏差的试验方法

[中文适用范围]： 本标准规定了铜、铅、锌和镍精矿取样是否存在偏差的检查方法，取样按照ISO 12743规定的方法进行。 这些方法也可用于比较替代方案取样制度，检查样品处理中是否存在任何偏差，并检查不同地点（例如装货点和卸货点）取样或交换样品分析中可能存在的显着差异。 附件 A 中给出了数值示例。 [外文原描述]： ISO 13292:2006 specifies methods for checking whether there is any bias in the sampling of copper, lead, zinc and nickel concentrates, where the sampling is carried out in accordance with the methods specified in ISO 12743. These methods can also be used for comparing alternative sampling regimes, checking whether there is any bias in sample processing and for checking possible significant differences in sampling at different places, e.g. at loading and discharge points, or the analysis of exchange samples.