催化一分光光度法测定C_u(Ⅱ)的指示反应报导颇多,各有特色。本文研究了新的指示反应—用氯酸钾氧化苯肼与H—酸,得紫红色反应产物;通过条件试验,确立了测定痕量铜(Ⅱ)的适宜条件。本法的灵敏度按表观摩尔吸光系数表示,可达50×10~5,比最好的分光光度法高数倍,但不及大多已知的测定铜的催化—分光光度法,不过,本法有其特 Catalytic spectrophotometric determination of C_u (Ⅱ) indicates the reaction of many reports, each with its own characteristics. In this paper, a new indication reaction was studied: the reaction between phenylhydrazine and H-acid was oxidized by potassium chlorate to obtain the purple reaction product. The suitable conditions for the determination of trace copper (Ⅱ) were established by the condition test. The sensitivity of this method expressed by the apparent molar absorptivity, up to 50 × 10 ~ 5, several times higher than the best spectrophotometry, but less than most of the known determination of copper catalytic spectrophotometry, however, this Law There are special