钼（Ⅵ）－BTAPG－混合表面活性剂显色反应的研究

STUDY ON CHROMOGENIC REACTION OF Mo(Ⅵ)-BTAPG IN THE PRESENIC SURFACTANTS

新显色剂４－（２－苯并噻唑偶氮）焦酚在混合表面活性剂ＣＴＭＡＢ和Ｔｗｅｅｎ－８０存在下与钼的显色反应表明，该配合物的λ_（ｍａｘ）为５７５ｎｍ，ε５７５为８．１９×１０~４Ｌ·ｍｏｌ^（－１）·ｃｍ^（－１）．２５ｍｌ溶波中，钼在０～２０μｇ范围内服从比耳定律。所拟定的方法已满意地用于钢铁中微量钼的测定。

it is reported in the paper that 4-(2-benzothiazolylazo)pyrognllol(BTAPG).a new organic reagent.reacts with Mo(Ⅵ) to form a complex.lts ε is 8.19×10￣4 L.mol￣(-1).cm￣(-1),λ_(maz) is 575 nm.Beer's law is obeyed in the concentration range of 0～20μg.The proposed method has been applied to the speetrophotometric determination of trace Mu(Ⅵ) in steel with satisfactory results.