汞与溴代二甲氨基苯基荧光酮的多元配合物的光度研究及应用

Studies on multicomponent complex of mercury with Bromu=N. N- Dimethy-lanilinefluorone by spectrophotometryc method

本文研究了在表面活性剂存在下,汞与澳代二甲氨基苯基荧光酮(BDMAF)的显色反应。在pH=10.5的缓冲体系中,Hg(Ⅱ)与显色剂形成1:3稳定的紫红色配合物,配合物的λ_(max)=560nm,其表现摩尔吸光系数为1.16×10~5 L.mol^(-1).cm^(-1).,Hg(Ⅱ)含量在0～30μg/25mL范围内符合比尔定律样品分析结果令人满意。

The colour reation of Hg (II)With (BDMAF) has been investigated in presence of surface-tants, pHL0.5.The absorption Hg(II) with (BDMAF) to form a 1:3 stable red complex in the presence maximum is at 560 nm and the.apparentmolar absorptivity is 1.16×105 L.mol-1.cm-1.Beer's law is obeyed in the range of 0-20μg/25 ml,The method is highly sensi-tive and selective The method has been applied to the direct determination of mercuty in water samples with satisfactory results.