锌-苯基荧光酮-CTMAB-OP多元配合物的分光光度法研究

目的：在溴化十六烷基三甲铵（CTMAB）和乳化剂（OP）存在下,基于Zn（Ⅱ）与苯基荧光酮（PF）的显色反应,建立了分光光度法测定微量锌的新方法。方法：通过Zn（Ⅱ）与PF-CTMAB-OP形成灵敏度较高的多元配合物,来测量锌含量。结果：络合物的最大吸收波长为585nm,表观摩尔吸光系数为ε=2.10×105L.mol-1.cm-1,Zn（Ⅱ）含量在0.039～14.0μg/25mL范围内服从比尔定律,线性回归方程为A=0.1365C（μg/25mL）＋0.0186,r=0.9990,干扰离子较少。结论：已用于网管水锌含量的测定,结果令人满意。

ZINC-PHENYLFLUORONE-CTMAB-OP COMPLEX MULTI-SPECTROPHOTOMETRIC STUDY

Objective：A new color reaction method for the determination of trace zinc with phenylfluorone（PF）in the presence of hexadecyltrimethylammonium bromide（CTMAB）and emulsifier（OP）has been described.Methods：Zn（Ⅱ）with the PF-CTMAB-OP to form a high sensitivity of multi-complexes to measure the zinc content.Results：The absorption maxima of the complex is at 585 nm with apparent molar absorptivity of 2.10 × 105L · mol-1 · cm-1.The linear Range is 0.034～14.0 μg /25 mL.The regression equation is A=0.1365C（μg/25mL）＋0.0186.The correlation coefficient is r= 0.9990,interfering ion less.Conclusion：The method has been applied to the determination of trace zinc in tap water with satisfactory results.