对于以生成离子缔合物测碲的光度法曾有所报导。我们研究发现在磷酸介质中,碲碘络阴离子能与孔雀绿(MG)形成可被苯萃取的离子缔合物。其λ最大=635nm,摩尔吸光系数ε=2.37×10~5,较文献[1—3]报导各法的ε值更高。并确定其络合比为Te(Ⅳ):Ⅰ~-:MG=1:6:2。我们还试验了一些常见阴、阳离子的干扰情况,并提出一种灵敏度较高的测碲萃取光度法。 There have been reported spectrophotometric methods for the determination of tellurium using ion association. In our study, we found that tellurium iodide anion can form ion-associate with malachite green (MG) which can be extracted by benzene in phosphoric acid medium. The maximum λ = 635nm, the molar extinction coefficient ε = 2.37 × 10 ~ 5, higher than the reported [1-3] ε values ​​of each method. The complex ratio of Te (Ⅳ): Ⅰ ~ -: MG = 1: 6: 2 was determined. We also tested some common anion and cation interferences, and proposed a more sensitive detection of tellurium extraction spectrophotometry.