【摘要】 本文研究了四苯基卟啉和一些金属离子的络合反应条件和反应速度;研究了铜、铅、锌及镉离子和四苯基卟啉所形成的络合物的稳定性,并测定了它们的组成;研究了这些络合物的吸收光谱及同时测定这些金属离子的合适波长,确定光度检测的条件;研究了络合物的色谱行为和可能的干扰,确定了反相色谱分离条件。 在上述研究的基础上提出同时测定这些金属元素的反相液相色谱法。方法快速,精密度好,变异系数在0.62—3.5％之间。最低检出量为0.04ngCd,0.16ngPb,0.20ngCu和0.005ngZn。本文提出的方法已成功地应用于锡基合金及电镀废水中铜、铅、锌和镉的测定,准确度好.更多还原

【Abstract】 In this paper, conditions and speeds for chelating tetraphenylporphyrin (TPP) with some metal ions have been studied. It is shown that chelates of Cu, Pb, Zn and Cd were stable in benzene and in the chromatographic system. The composition ratios of the chelates have been determination of the metals were chosen.The conditions for separation of chelates by reverse phase HPLC and the interference of other ions have also been studied. A simple and rapid method for simultaneous determination of trace amount of Cu, Pb, Zn and Cd by reverse phase HPLC has been developed. The detection limits are 0.04ng, 0.16ng, 0.20ng and 0.005ng for Cd, Pb, Cu and Zn respectively. The precision and accuracy of the method are satisfactory.The proposed method has been successfully applied to the determination of Cu, Pb, Zn and Cd in tin basis alloy and waste water of electroplating.更多还原