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Co~(3+)、Cu~(2+)和Fe~(3+),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。 Nitroso red salt (NRS) was loaded on an anion exchange resin to prepare NRS-resin. In this paper, some analytical properties of NRS-loaded macroporous strongly basic anion exchange resin (NRS-resin) were studied. The resin was used to enrich trace amount of copper, cobalt and iron in matrix zinc, The results of atomic absorption spectrophotometry for the determination of Co ~ (3 +), Cu ~ (2+) and Fe ~ (3+) in the eluent were satisfactory. (A) Reagents and Instruments 1. Reagents: preparation and calibration with the usual method. 2. Zeiss AAS-1 atomic absorption spectrophotometer, 721 spectrophotometer.