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本文研究了在盐酸介质中,用非离子型表面活性剂烷基酚聚乙二醇醚及苯芴酮分光光度法测定痕量锆的适宜条件,提出了一个操作简便,灵敏度高的新方法。络合物的摩尔吸光系数ε=1.6×10~5桑德尔灵敏度S=0.00057微充/厘米~2。λ最大为530纳米锆含量在.0—4微克/25毫升符合比耳定律。本文还考查了铌、钽、锗、钛、铪、铁Ⅲ、铝、铬、钙、镁、钾、钠和磷酸根的干扰情况。其中铌、钽、锗、铪均有干扰,如迂有这些离子共存,需预先分离。铁(Ⅲ)的影响可用盐酸羟胺消除。磷酸根在低含量的情况下,可用钙离子掩蔽。
In this paper, the suitable conditions for the determination of trace zirconium with nonionic surfactant alkylphenol polyglycol ether and benzofluorenone spectrophotometry in hydrochloric acid medium were studied. A new method with high sensitivity and simple operation was proposed. The molar extinction coefficient of the complex ε = 1.6 × 10 ~ 5 SANDAL sensitivity S = 0.00057 micro-charge / cm ~ 2. λ max 530 nm Zr content .0-4 μg / 25 ml Beer’s law is obeyed. This article also examined the interferences of niobium, tantalum, germanium, titanium, hafnium, iron III, aluminum, chromium, calcium, magnesium, potassium, sodium and phosphate. Among them niobium, tantalum, germanium, hafnium have interference, such as circuitous with these ions coexist, need to be separated in advance. The effect of iron (III) can be eliminated with hydroxylamine hydrochloride. Phosphate at low levels can be masked with calcium ions.