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锆(Ⅳ)的光度测定已有综述。其中三苯甲烷类试剂应用较广泛,作者等新近提出了PSC法。利用胶束增溶(敏)的方法渐多,其中体系Zr-TAM-Zeph、Zr-CAS-各类表面活性剂、Zr-SAF或m-NPF等2,3,7-三羟基萤光酮衍生物-CTMAB、Zr-Br-BTAE-SLS、Zr-Br-PF-CTMAB-Tween-60等灵敏度高(ε≥10~5)。本文研究了在不同表面活性剂存在下,铬菁R(ECR)与锆(Ⅳ)的络合显色反应。在溴化十六烷基吡啶(CPB)存在下,pH=5时,络合物的最大吸收波长560～590nm(ε_(570)=1.24×10~5),其灵敏度高,适于微量锆的测定。
The photometric determination of zirconium (IV) has been reviewed. Triphenyl methane reagent which is widely used, the authors recently proposed the PSC method. There are many ways to solubilize micelles. Among them, 2,3,7-trihydroxyfluoresceinone such as Zr-TAM-Zeph, Zr-CAS-various surfactants, Zr-SAF or m-NPF Derivatives -CTMAB, Zr-Br-BTAE-SLS, Zr-Br-PF-CTMAB-Tween-60 and other high sensitivity (ε≥10 ~ 5). In this paper, the complex chromogenic reaction of chromium cyanine R (ECR) with zirconium (Ⅳ) was studied in the presence of different surfactants. In the presence of cetylpyridinium bromide (CPB), the maximum absorption wavelength of the complex is 560-590 nm (ε 570 (= 1.24 × 10 -5)) at pH = 5, which is sensitive to trace zirconium The determination.