Method for determining contents of potassium and sodium in coal tar by ICP-OES

The invention discloses a method for determining contents of potassium and sodium in coal tar by ICP-OES, and belongs to the technical field of determination of potassium and sodium in coal tar. According to the method, only the coal tar sample needs to be ashed, repeated volatilization and other operations on a heating device are not needed, the ashing steps are reduced, the experimental complexity is reduced, the operation is simple and convenient, the samples can be simultaneously treated on a large scale, and the large-scale production and analysis requirements can be met. The inductively coupled plasma emission spectrometry is wide in linear range, high in recovery rate and good in reproducibility, the limit of quantification is far lower than that of an atomic absorption method, mutual interference among elements can be eliminated, and the content of potassium and sodium in coal tar can be simply and rapidly determined. 本发明公开了一种ICP-OES测定煤焦油中钾、钠含量的方法，属于煤焦油中钾钠测定技术领域。本发明只需要将煤焦油样品灰化，不需要重复在加热装置上进行挥发等操作，灰化步骤减