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本文提出以酒石酸、柠檬酸作掩蔽剂、二乙基二硫代氨基甲酸二乙铵(DDDC)为整合剂,甲基异丁基酮(MIBK)为溶剂,萃取分离水合氧化钛吸附剂中铁、铜、锌、镉、铅、钴、镍、锰八种元素,接着用火焰原子吸收分光光度法直接测定有机相中其含量.测定前,详细研究了pH、基体元素——钛含量、掩蔽剂用量对萃取分离的影响.找到了合适的测定条件.测定了八种元素分别与DDDC形成的螯合物在MIBK中的稳定性.方法的精密度良好.本方法也适用于其它钛的化合物或金属钛中痕量杂质元素的测定.
In this paper, tartaric acid, citric acid as masking agent, diethyldithiocarbamate (DDDC) as a binder and methyl isobutyl ketone (MIBK) as a solvent were used to extract and separate iron, Copper, zinc, cadmium, lead, cobalt, nickel and manganese, followed by flame atomic absorption spectrophotometric determination of the organic phase content directly before the determination of pH, the matrix element - titanium content, masking agent The amount of the effect on the extraction and separation.The suitable determination conditions were found.The stability of the chelates formed by eight elements and DDDC in MIBK was determined.The method was good.The method is also applicable to other titanium compounds or Determination of trace impurities in titanium metal.