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本文研究了铋(Ⅲ)—间硝基偶氮氯膦—溴化十六烷基吡啶—Triton X-100—乙醇显色体系的光度特性,并确定了该体系中以铋配合物进行测定的最佳条件。该体系与相应的二元体系相比,灵敏度、稳定性和选择性均有显著提高,据此提出了测定铋的新方法。用于铅基合成试样中铋的测定,结果满意。
In this paper, the photometric properties of the bismuth (III) -nitrosochlorophosphonazo-cetylpyridinium bromide-Triton X-100-ethanol system were studied. Optimal conditions. Compared with the corresponding binary system, the sensitivity, stability and selectivity of the system are significantly improved. A new method for the determination of bismuth is proposed. Used for the determination of bismuth in lead-based synthetic samples with satisfactory results.