本文拟定了用高选择性的氢化物分离技术,与高灵敏度的多元络合物相结合的水相测定锑的新方法。氢化物分离使锑与大量基体元素分离后和碘化钾-水杨基萤光酮-非离子表面活性剂聚乙二醇辛基苯基醚(简称乳化剂OP)形成多元络合物。该络合物在0.25—0.38N盐酸介质中呈橙黄色,于波长510nm有最大吸收,摩尔吸光系数ε=7.1×10~4l·mol~(-1)·cm~(-1)。含锑0—15μg/10ml遵从比尔定律。由于引入适宜掩蔽剂及选用特定吸收液,与锑同有氢化特性的干扰元素亦可消除,常温下络合物可稳定3小时。本法简单快速,不需有机溶剂萃 In this paper, we develop a new method for the determination of antimony in the aqueous phase using a highly selective hydride separation technique in combination with a highly sensitive, multivalent complex. Hydride separation of antimony and a large number of matrix element separation and potassium iodide - salicyl fluorone - nonionic surfactant polyethylene glycol octyl phenyl ether (emulsifier OP) to form a multi-complex. The complex was orange yellow in 0.25-0.38N hydrochloric acid medium and had the maximum absorption at 510nm. The molar absorptivity ε = 7.1 × 10 ~ 4l · mol -1 (-1) cm -1. Antimony containing 0-15μg / 10ml obeys Bill’s law. Due to the introduction of suitable masking agent and selection of specific absorbing solution, the interference element with the same hydrogenation property can also be eliminated. The complex can be stable for 3 hours under normal temperature. This method is simple and fast, without organic solvent extraction