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目前,空气、毛发、尿样中微量锑的测定多采用罗丹明B作显色剂,但操作繁琐,实验条件难于控制,重现性差。近期有资料介绍,5—Br—PADAP可与锑、铝、镉等许多种离子发生灵敏度高的显色反应,其摩尔消光系数可达5.5×10~4。在酸性溶液中,锑与碘化钾、5—Br—PADAP形成蓝绿色的三元络合物,易为苯等惰性溶剂萃取。曾用于废水中锑的测定。 本文在前人工作的基础上,对样品的采
At present, the determination of trace antimony in air, hair, and urine samples mostly uses rhodamine B as a developer, but the operation is cumbersome, the experimental conditions are difficult to control, and the reproducibility is poor. According to recent data, 5-Br-PADAP can react with many kinds of ions, such as antimony, aluminum and cadmium, in a high sensitivity color reaction with a molar extinction coefficient of 5.5 × 10 -4. In acidic solution, antimony and potassium iodide, 5-Br-PADAP to form a blue-green ternary complex, easy to benzene and other inert solvent extraction. Used in the determination of antimony in wastewater. Based on the previous work, this paper collects samples