【摘要】 <正> 有人将亚硝基红盐（NRS）负载在阴离子交换树脂上制得NRS-树脂。本文研究了负载有NRS的D-290大孔强硷性阴离子交换树脂（NRS-树脂）的某些分析特性,并应用该树脂富集基体锌中的微量铜、钴和铁,然后以高氯酸作洗脱剂,用原子吸收光度法测定洗脱液中的Co³⁺、Cu²⁺和Fe³⁺,获得满意结果。 （一）试剂和仪器 1.试剂:用常法配制和标定。 2.蔡司AAS-1型原子吸收分光光度计,721型分光光度计。更多还原

【Abstract】 A study is given of the preparation of chelate-forming resin bearing nitroso R salt group and its adsorption behaviour. The preconcentration of trace Co, Cu and Fe in zinc sulfate by column method and the atomic absorption speobrophotometric determination of these heavy metals in zinc sulfate have been studied. The percentage recoveries of 90—103, 93.3—100, and 100—106 for Co, Cu and Fe, and the standard deviations of 0.027 and 0.024 for Co and Cu are obtained respectivelv.更多还原