Method for determining lead, cadmium, cobalt and nickel in zinc hydrometallurgy purification slag by atomic absorption spectrometry

The invention discloses an atomic absorption spectrometry method for measuring lead, cadmium, cobalt and nickel in zinc hydrometallurgy purification slag, and belongs to the technical field of zinc hydrometallurgy. The atomic absorption spectrometry method comprises the following specific steps: S1, weighing 0.2000 g of a sample, and placing the sample in a 500m l wide-mouth beaker; s2, adding 5m l of hydrochloric acid, and purging the inner wall of the beaker and the watch glass with pure water; s3, determining a standard working curve; s4, determining main parameter conditions of an atomic absorption spectrometer; the method has the beneficial effects that hydrochloric acid, nitric acid and perchloric acid are directly decomposed into a solution to be detected from a material through primary acid dissolution, and accurate and quantitative determination is performed under the conditions of optimal wavelength and optimal determination parameters by utilizing instrument characteristics of a continuous light so