Application of continuous light source graphite furnace atomic absorption in material thallium element determination

The invention discloses application of continuous light source graphite furnace atomic absorption in material thallium element determination, relates to the technical field of zinc smelting production, and solves the technical problems that an existing thallium determination method is low in accuracy, large in matrix interference, low in sample applicability and narrow in application range. Comprising the steps of sample dissolution, constant volume, thallium ion complexation and extraction, absorbance determination, standard working curve determination and the like. Under the medium condition of sulfuric acid-potassium bromide, complex anions [TlBr4] formed by Tl3 < + > and Br can form an ionic association compound under the extraction action of MIBK, and the thallium element subjected to extraction and enrichment has the condition of entering a coating pyrolytic graphite tube for high-temperature atomization measurement, so that the absorbance of the thallium element in a to-be-measured sample is ac