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吉村于1976年提出以离子交换树脂作载体直接对显色树脂进行光度测定的离子交换树脂比色法,并首先用二苯碳酰二肼作显色剂测定了水中微量铬,郭文生,李世豫用国产树脂分别测定了洗涤塔脲液和水中的铬。大関邦夫和Ohzeki用凝聚树脂比色法测定了水中ppb级的铬,但在金属分析中的应用尚未见报导。本文将此法应用于金属分析,可不经分离直接测定钨中的铬,测定下限达0.5×10~(-4)％。试验结果表明,离子交换树脂比色法所具有的选择性高,灵敏和快速的特点在金属分析中同
Yoshimura in 1976 proposed ion exchange resin as carrier directly to the color resin photometric determination of ion exchange resin colorimetric method, and first with diphenylcarbazide as a reagent for the determination of trace chromium in water, Guo Wensheng, Li Shiyu The domestic resin was used to determine the chromium in the scrubber and the water. Daigobuf and Ohzeki have measured ppb levels of chromium in water using the condensed-resin colorimetric method, but their application in metal analysis has not been reported yet. In this paper, this method is applied to metal analysis, which can directly measure the chromium in tungsten without separation, and the determination limit is up to 0.5 × 10 ~ (-4)%. The experimental results show that ion exchange resin colorimetry has the characteristics of high selectivity, sensitivity and fast in metal analysis