GB/T 23273.8-2009 standard specifies the determination method of nickel, copper, iron, zinc, aluminum, manganese, lead, arsenic, calcium, mg, sodium and other elements in cobalt oxalate, using Inductance Coupled Plasma Emission Light Spectrometry (ICP-OES). This part applies to the determination of the range of these elements. First, the cobalt oxalate is calcined on a heater at 300 ° C to 400 ° C, converted to black oxide, and then dissolved with aqua regia. Using optimized working conditions and analytical spectral lines, in aqua regia medium, the determination is carried out by a standard solution similar to the composition of the sample. The standard also requires the use of superior purity reagents and secondary distillation water. The solution needs to be stored in a plastic bottle.