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本文研究了钒(Ⅳ)-偶氮氯膦Ⅲ-溴化十六烷基三甲铵-乳化剂OP体系的光度特性,并确定了钒测定的最佳条件.配合物的最大吸收位于620nm,单、双波长法测得其表观摩尔吸光系数分别为2.29×10~4和3.12×14~4L.mol~(-1)·cm~(-1),该体系的灵敏度,选择性和稳定性均较相应的二元体系高.据此提出了测定钒的新方法,用于低合金钢中钒的测定,结果满意.
In this paper, the photometric properties of vanadium (Ⅳ) -chlorophosphonazo Ⅲ-cetyltrimethylammonium bromide-emulsifier OP system were investigated and the optimum conditions for the determination of vanadium were determined.The maximum absorption of the complex was at 620 nm, The apparent molar absorptivities were 2.29 × 10 ~ 4 and 3.12 × 14 ~ 4L.mol ~ (-1) · cm ~ (-1) measured by the dual wavelength method. The sensitivity, selectivity and stability of the system Were higher than the corresponding binary system.A new method for the determination of vanadium was proposed for the determination of vanadium in low alloy steels with satisfactory results.