ISO 5418-1:2006规定了测定铁矿石中铜的2,2'-联喹啉分光光度法。 该方法适用于天然铁矿石、铁精矿和烧结矿（包括烧结矿产品）中铜的质量分数介于0005%和0.77%之间。

ISO 5418-1:2006 specifies a 2,2'-biquinolyl spectrophotometric method for the determination of copper in iron ores. This method is applicable to mass fractions of copper between 0,005 % and 0,77 % in natural iron ores, iron ore concentrates and agglomerates, including sinter products.