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本文报道了一个用于测定铊T1_(111)的简易、灵敏和快速的分光光度法,其反应基于盐酸氯丙嗪和T1_(111)在4～7M磷酸和室温下形成一种粉红色物质,最大吸收峰为526nm。T1_(111)的浓度在0.1～11.5μml~(-1)范围内遵守比尔定律,最佳范围是1.0～10.0μgml~(-1)。其反应的Sandell灵敏度为0.0096μgcm~(-2),摩尔吸收系数是2.1×10~4/molcm~(-1)。确定了该法对于通常与铊有关联的各种阳离子和阴离子的容许限。本法可以用来测定铊合金中的铊。
A simple, sensitive and rapid spectrophotometric method for the determination of T1_ (111) in thallium was reported in this paper. The reaction was based on the reaction of chlorpromazine and T1_ (111) with 4-7M phosphoric acid at room temperature to form a pink substance. The maximum absorption peak is 526nm. Beer ’s law was observed for the concentration of T1_ (111) in the range of 0.1 ~ 11.5μml ~ (-1). The optimum range was 1.0 ~ 10.0μgml ~ (-1). The sensitivity of Sandell was 0.0096μgcm -2 and the molar absorption coefficient was 2.1 × 10 ~ 4 / molcm -1. The allowable limits for this method for various cations and anions that are commonly associated with thallium have been established. This method can be used to determine thallium in thallium alloys.